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SOPHIA REYES- I’ve learned that the geologic time scale is like a timeline of Earth’s entire history, showing how the planet and life on it have changed over billions of years.

ELLA NERA- I learned is the earth history happened such as the formation and continents and also the geologic time scale which is divided into four eons,eras, periods, epochs

DANNEX PANTALEON- I learned different geological time scale Earth—Eons,Epochs,Eras,

LIAN TARDECILLA- I learned that Earth’s history is organized into a geologic time scale, which is divided into eons, eras, periods, and epochs.

LHAICA SILVINO- i learned that the geologic time scale is a frame work that divides Earth's 4.5 billion based on significant geologic and biological events.

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Geologic Time Scale

Santos, Princess Eleina A. - The things that i learned about on geologic time scale is the order of events on our Earth that happened, it also describe the “calendar” of events in our Earth history.

Salazar, Lhean Joy M. - ‎geologic time scale has completely changed my perspective on the Earth's history. I never realized how much has happened on our planet over billions of years. From the formation of rocks to the evolution of life, it's fascinating to see how everything fits together.

Kurt Dj. Zorilla - the geologic time scale also made me think about the impact to human activities on Earth.

Prince Rj. Leyva - i understand that geologic time scale has an arrangement that happened on our Earth history.

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JOCSON, GRACE ALLEN D.

What I learned in geologic time scale is how the life happens before, especially the definition of eons that this is the largest units of geologic time, that eras is the subdivisions of eons defined by significant geological or paleontological events, that periods is subdivisions of eras, defined by notable geological events, that epoch is subdivisions of periods defined by smaller-scale geological events.

YACAPIN, SAMANTHA NICOLE S.

•I learned that the geologic time scale divided into big parts like eons and eras, and smaller parts like periods and epochs. This makes it easier to study Earth’s history step by step. Each division is based on big changes that happened on Earth."

KADUSALE, RICA JEANE

•I learned about the geologic time scale, a framework for dividing Earth's history into manageable units based on significant geological events.The geologic time scale is like a big calendar for Earth's history. It helps geologists understand and communicate about the vast timeline of Earth's 4.5 billion years.

PADAMA, TRISHA MAE M.

•‎I learned that the geologic time scale is important for understanding how Earth has changed over millions of years. It shows big events like the start of life, the end of dinosaurs, and the movement of land. It also made me realize that humans are only a small part of Earth’s long history.

MANALO, MARIANE JOYCE C.

•I learned that humans are very new in Earth’s history. For most of the planet’s past, there were only animals, plants, and even dinosaurs before people came. It shows how much Earth has changed over time.

SAN DIEGO, ASHLEY G.

•I learned that the geologic time scale tells the story of Earth using rocks and fossils. It shows when different species appeared and disappeared, and how continents moved. It made me see that Earth is always changing

BAGANO, CHLOE A.

•I learned that the geologic time scale helps scientists see how life has changed over time. It shows big events like the appearance of new animals, the extinction of others, and changes in Earth’s environment. It’s like a guide that explains the story of life on our planet.

GUTLAY, NESHAMAH SAMUEL B.

•I learned that the rocks on Earth are like pages in a history book. Each layer of rock has clues about what happened in the past, like fossils of plants and animals. Scientists use these clues to figure out what life was like millions of years ago.

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Jhon Mark H. Calixtro

I learned that the geologic time scale is a way of dividing Earth’s 4.6-billion-year history into different sections, like eons, eras, periods, and epochs. It shows the major events in Earth’s past, such as the appearance of life, the rise and extinction of dinosaurs, and the evolution of humans. I also learned that fossils help scientists know when these events happened, and that Earth has changed a lot over time.

Audrey Mae Umali

I learned that the Geologic Time Scaleis a timeline that organizes Earth’s 4.6-billion-year history into different sections based on major changes in the planet and life. It is divided into eons, eras, periods, epochs, and ages, which help scientists track when events happened.

Valerie Bambico

The importance and what I’ve learned about the geologic time scale is that it gives scientists and students a framework to understand Earth’s history in order, just like a timeline. It teaches us that Earth has undergone slow but significant transformations, that species must adapt or face extinction, and that natural events like volcanic eruptions, asteroid impacts, and climate shifts have shaped life’s course. It also reminds us that humans have been here for only a tiny part of Earth’s history, highlighting the importance of protecting our planet for the future

John Benedict E. Bungay:

I've learned that from geologic time scale (GTS) is a system of chronological dating that relates geological strata (layers of rock) to time. It is used by geologists, paleontologists, and other Earth scientists to describe the timing and relationships of events that have occurred during Earth's history.

Samuel Java

I learned about the geologic time scale, which is a framework used to divide the Earth's 4.5 billion-year history into manageable sections. By correlating rock layers and fossils, scientists can reconstruct the Earth's past environments, climates, and life forms.

Luigi S. Repormina

i learned that geologic time scale is important because it helps scientists trace the evolution of life, study past environments, and connect rock layers from different parts of the world. From it, we learn that Earth has changed greatly over billions of years, that life constantly adapts to survive, and that our time on the planet is very brief compared to its entire history, reminding us to value and care for it.

Kristine angelie A. rementina

The geologic time scale is a system scientists use to organize Earth’s 4.6-billion-year history into different units based on major events, such as the formation of the planet, the appearance of life, mass extinctions, and significant climate or geological changes.

It’s divided into hierarchical time units:

Eons – the largest divisions

John Carlo Bacasnot:

I learned about the geologic time scale as a way to understand how Earth’s 4.6-billion-year history is divided into units based on major events like the rise of life, mass extinctions, and human appearance. It helps me see that the planet is always changing, life must adapt to survive, and our role is to protect Earth during our short time here.

Jerry Lee:

I learned about the geologic time scale as a tool scientists use with fossils and rock layers to map Earth’s past, from ancient oceans to the age of dinosaurs and beyond. It shows me that natural events shape life, species adapt or vanish, and humans are just a small part of a much larger story.

Charize Andrea G. Abdul

From the geological time scale, I learned that Earth’s 4.6-billion-year history is organized into a hierarchy of eons, eras, periods, epochs, and ages, each marked by significant events such as the formation of the planet, the emergence and evolution of life, mass extinctions, and major climate shifts, with scientists using fossils, rock layers, and radiometric dating to determine these divisions and understand how life and the environment have changed over time.

King Clark villanueva

I learned that the Geologic Time Scale tells the story of Earth from the time it was formed up to today. I understand now that life has changed a lot over billions of years, and that huma

ns are just a very recent part of that story.

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What we have Learned from Geologic Time Scale?

Lance SB Garcia - I've learned that that there are four Divisions in the Geologic Time Scale such as

Eons - the largest unit of time like the Precambrian and Phanerozoic.

Eras - subdivision of eons, such as Paleozoic, Mesozoic, and Cenozoic

Periods - Subdivisions of eras, like the Paleogene, Neogene, Quaternary

Epochs - Subdivisions of periods, like the Pleistocene and Holocene.

Myra Ellise De Leon - I've learned that geologic time scale have 4 Divisions. The largest division of time is Eon and its subdivision is era. Era also have it's own subdivision which is Period and like Era, Period's subdivision is Epoch. From this divisions, we currently live in phanezoic eon, cenozoic era, quarternary period, and holocene, epoch.

Artchie S. Durin - i have learned The Geologic Time Scale shows that Earth has changed gradually over millions of years but also experienced sudden, dramatic events.

Eljane I. Delis - i have learned that

Major events, such as the rise of dinosaurs, the extinction events, and the appearance of humans, are placed within this timeline.

Chris Anthony Mahomitano - i have learned that It helps scientists understand the sequence of events in Earth’s history — like mass extinctions, climate changes, and evolution of life.

Rochelle B. Dispe - i have learned that It is based on evidence from fossils, rock layers, and radiometric dating.

Alexa Antonette Natividad - i have learned that Epochs are the smallest named divisions, such as the Holocene (present day).

Rhena Kelly Lagahit - i have learned that Periods are smaller divisions of eras, like the Jurassic or Quaternary.

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Sumaco, Jhunalyn

I've learned that learning geologic time scale is significant in our history because it helps us organize or arrange the events in our history. Moreover, it also tells us how far our civilization go.

San Felipe, Rianne Leigh

In geologic time scale, I learned that there are different types of time scale that depicts the history of our planet Earth—on what particular event happened in the early stage of the planet Earth. We can also identify the time scale we are currently living right now. By this geologic time scale, we can trace our ancient history, the fossils we've found and many more.

Reyes, Royce

Some things that I've learned on the topic, geologic time scale are the Earth's history and how the Earth works or function throughout the many years it has existed. I also learned the right order of the Earth's geologic time scale and some of the

events in side it.

Breis, Jade

I learned in geologic time scale is there are four types of it. The examples of these are eons, eras, periods, and epochs while the eons is the largest time period.

Lagmay, Hiraya

The geologic time scale teaches us about the history of the Earth, mostly about what happened in each or that specific time.

Apanto, Trisha

I've learned about the different types of geologic time scale, these are the eons, eras, periods and epochs.

Calma, Geordan

I learned that the geologic time scale is a timeline used by scientists to show the history of earth from its formation about 4billion years ago until today. It is divided into different parts they are eons, eras, periods and epochs.

Amper, Alexis

I have learned about the geologic events that happened each time period.

Tasane, Alleia

The one that I've remembered in the lesson geologic time scale is eon is the longest and the largest time period and there are four types are eons, eras, periods and epochs.

Alamanzar, Santino

I leaned about the geologic time scale like eons. Eons know as the longest time scale than the others.

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G11- Humss B

Carmela Luis Ompangco

Stephanie Dimple Francisco

Samantha Nicole Mata

Monalyn Araos

Ariane Nicole Muralla

Rhianne Rich Cabalfin

Janelopy Torres

Hannah Faith Jania

Marvin Laurio

Kris Jacob Refuerzo

What we learned about geologic time scale?

Francisco S. - I learned geologic time scale is a system used to organize Earth's history, dividing it into eras, periods, and epochs based on major geological and biological events. It's a timeline that helps scientists understand the sequence of events in Earth's 4.6 billion-year history, from the planet's formation to the present day.

Araos- The geologic time scale is a timeline that chronicles Earth's history, from formation to present, divided into eons, eras, periods, and epochs.

Mata- i learned that the geologic time scale is a chronological framework that divides Earth's 4.5 billion-year history into distinct sections: eons (longest divisions), eras, periods, epochs (shortest divisions), it helps scientists understand Earth's evolution, including the formation of rocks, fossils, and landscapes, and reconstructs the planet's past environments and life forms.

Ompangco - The geologic time scale is based on the geologic rock record, which includes erosion, mountain building and other geologic events.

Muralla- The Geologic Time Scale shows Earth’s history from 4.6 billion years ago to today. It is divided into parts to help us understand when important events happened, like the first life, dinosaurs, and humans. It also tells how some animals and plants disappeared, new ones appeared, and how life changed over time. Continents moved, the climate changed, and scientists use rocks and fossils to learn about these events.

Correct Sequence (largest to smallest):

1. Eons – Longest time spans (Hadean, Archean, Proterozoic, Phanerozoic)

2. Eras – Subdivisions of eons (Paleozoic, Mesozoic, Cenozoic)

3. Periods – Subdivisions of eras (Paleogene, Neogene, Quaternary)

4. Epochs – Shortest official divisions, within periods

Cabalfin - the geologic time scale is like Earth’s history calendar, a system scientists use to organize the planet’s 4.6 billion years into structured time intervals. It’s based on major events recorded in rocks and fossils, such as the appearance or extinction of certain life forms, and large-scale changes in climate and geology.

Jania- it shows how life and environments have changed over time and helps predict future changes by understanding past patterns.

Torres - From the topic Geologic Time Scale, you learn that Earth is about 4.6 billion years old and its history is divided into parts to make it easier to study. It shows important events like the first life, the time of dinosaurs, and the rise of humans. You also learn how life changed from simple to complex, how some species went extinct, and how continents and climates changed. Scientists study rocks and fossils to understand these events in Earth’s past.

Refuerzo- Division of time

Rock layers and fossils

Major geological events

Evolution of life

Geologic processes, 1. *Divisions of time*: You'll learn about eons, eras, periods, and epochs, and how they're defined.

2. *Rock layers and fossils*: You'll study how rock layers and fossils provide evidence of the Earth's history.

3. *Major geological events*: You'll explore significant events like the formation of the Earth, the emergence of life, and mass extinctions.

4. *Evolution of life*: You'll learn about the evolution of life on Earth, from single-celled organisms to complex life forms.

5. *Geologic processes*: You'll understand how processes like plate tectonics, weathering, and erosion have shaped the Earth's surface.

Laurio - Geological time refers to the immense timescale that encompasses the Earth's history, spanning over 4.5 billion years.

1. Eons: The largest units of time, divided into Hadean, Archean, Proterozoic, and Phanerozoic eons.

2. Eras: Subdivisions of eons, like Paleozoic, Mesozoic, and Cenozoic eras.

3. Periods: Further divisions within eras, such as Cambrian, Jurassic, and Quaternary periods.

4. Epochs: Smaller units of time within periods

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GROUP 2 HUMSS-B                                 What is geologic time scale?

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GROUP 2 HUMSS-B                                 What is geologic time scale?

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JOSHUA PONCE

JEFFERSON BADAJOS

TERENZ DE GUZMAN

JOY OCTAVIANO

IRISH BUDDOLO

JESSIE HERNANDEZ

JHEZZY ANN FRANCISCO

ANGELINE PANTALEON

DANICA ESCRIBANO

DARLENE SANTIAGO

JILLIANNE BATALLER

The geologic time scale is measuring the age of an rock and what period the rock or fossil is exist,also measuring what event happened in the past few years.

It is also knowing what year it happened without using anything just the event happened.

PRINCESS IRISH BUDOLLO

It works a bit like a calendar of Earth’s history, but instead of days and months, it has eons, eras, periods, epochs, and ages.

These divisions are determined by evidence in rock layers or strata, fossil records, and major changes such as mass extinctions or the appearance of new life forms.

Cristine Joy M. Octaviano

I learned that the Geological Time Scale is a timeline of Earth’s 4.6 billion-year history, divided into eons, eras, periods, epochs, and ages. It helps scientists study past events, life forms, and changes on Earth through rocks and fossils.

Jhezzy Ann D. Francisco

From studying the geological time scale, I learned that it organizes Earth’s history from its formation about 4.6 billion years ago to the present. It is divided into eons, eras, periods, epochs, and ages, with each division marked by major events such as the emergence of new life forms, mass extinctions, and significant climate changes. The time scale shows how life evolved from simple organisms to complex plants, animals, and eventually humans. It also helps scientists understand past environments and use that knowledge to predict possible future changes on Earth.

ANGELINE PANTALEO

I learned From the topic Geologic Time Scale, I have learned that the Earth is about 4.6 billion years old. The Geologic Time Scale helps organize Earth's long history into sections such as eons, eras, periods, and epochs. Each time division is marked by important events, like the appearance or extinction of certain life forms. I learned that fossils are important tools scientists use to understand the age of rocks and the history of life on Earth. Over time, life evolved from simple organisms to more complex ones, including fish, reptiles, dinosaurs, and eventually mammals. I also learned that mass extinction events, like the one that killed the dinosaurs, have played a big role in shaping life on Earth. Lastly, I realized that humans have only been around for a very short time compared to the entire history of the Earth.

DANICA ESCRIBANO

From the topic Geologic Time Scale, I learned that Earth’s history is divided into different time units eons, eras, periods, epochs,ages to show the sequence of important events in our planet’s past.

jeffer badajos

The geologic time scale teaches us how Earth and life evolved, changed, and recovered over billions of years — helping us understand the present and predict the future.

One important thing I learned is that life on Earth has changed a lot over time — starting from simple life forms in the oceans to more complex plants and animals on land. The time scale also shows when mass extinctions happened, like when the dinosaurs went extinct about 66 million years ago.

I also learned that fossils play a big role in helping scientists date rocks and understand what life was like during different periods. The geologic time scale helps organize all of this information, so we can better understand Earth’s past and how it affects the present.

Jessie Jay B Hernandez

What have i learned in geologic time scale is about all the timeline including the Precambrian, Mesozoic, Paleozoic, and anything, Jurassic periods, how a human evolved and also how the reptiles turn into dinosaurs, knowing the geologic age of a rock, fossils, and even the mountains, also the different methods of a geologic time. knowing that I have learned all of those lessons to a one person, I gained a lot of knowledge about the timeline and being interested in history, how the rock age, how the fossils recorded, and all the possible ways of measuring the age of a rock and how they form through the past billions and millions of years ago here on earth.

DARLENE SANTIAGO

I’ve learned that the geologic time scale is a system scientists use to organize Earth’s history into different units based on major events, such as the formation of continents, the appearance and extinction of species, and changes in climate. It is divided into eons, eras, periods, epochs, and ages, which help us understand how Earth has changed over billions of years. This timeline shows how life evolved, from simple organisms to the complex plants and animals we have today.

Terenz Loyd D.C de Guzman

i have learned in geologiacal time scale is how the predators and other living animals evolved billion years ago, also what era they're living and what era we're in. i also gained knowledge about how fossil being recorded through methods geologists uses, and lastly how rock layers being formed as days, months, years have passed.

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Members:

Aliza Denise Cabaron

Princess Catalan

Mercy Ayson

Rhean Mae Openiano

Michael Encinas

Aizher Aurelio

Saimon Banaag

June Reinn San Esteban

Raizen Deil Benetiz

Wilharry Espiritu Santo

ALIZA DENISE CABARON

Studying the geologic time scale taught me that Earth’s story stretches back billions of years, unfolding through different eras and periods. Life began simply and slowly grew more complex, with mass extinctions reshaping what lived here. Over time, continents drifted, climates shifted, and the fossil record became our window into this long and fascinating history.

SAIMON BANAAG

The Geologic Time Scale is a system scientists use to divide Earth’s long history into sections based on major changes in the planet’s geology, climate, and life forms. It is organized into eons, eras, periods, epochs, and ages, each marking important events such as the rise of new species, mass extinctions, and shifts in continents and climate. By studying rock layers and fossils through relative and absolute dating, scientists can understand when these events happened and how life and the planet evolved over billions of years

RAIZEN BENETIZ

The geologic time scale is a chronological framework that divides Earth's 4.5 billion-year history into eons, eras, periods, and epochs. It includes:

- 4 main eons: Hadean, Archean, Proterozoic, and Phanerozoic

- Notable eras: Paleozoic (Cambrian explosion), Mesozoic (age of dinosaurs), and Cenozoic (evolution of mammals and humans)

The geologic time scale helps us understand Earth's history, rock formation, life evolution, climate change, and geological events.

JUNE REINN SAN ESTEBAN

1. *Earth's history is vast*: The geologic time scale helps organize Earth's 4.5 billion-year history into manageable sections.

2. *Divisions of time*: The scale is divided into eons, eras, periods, epochs, and ages, each representing a distinct period.

3. *Relative and absolute dating*: These methods help determine the age of rocks and fossils, providing insights into Earth's past.

4. *Major events and changes*: The geologic time scale highlights significant events, such as the emergence of life, mass extinctions, and changes in Earth's climate.

PRINCESS CATALAN

I learned that the geological time scale is divided into eons, eras, periods, and epochs, and shows how the planet and living things changed over billions of years.

AIZHER AURELIO

The geologic time scale is a system used by geologists and other scientists to describe the timing and relationships of events in Earth's history. It divides Earth’s 4.6-billion-year history into different units based on major geological or paleontological events, such as mass extinctions or the appearance of certain life forms.

MERCY AYSON

What I learned about geologic time scale is all about how different period of events and formation of continents, appearance of life forms like, the eons, era, epoch, and geologic time scale. We learn how the earth and life have evolved over the year.

RHEAN MAE OPENIANO

I have learned that the geologic time scale is a timeline that shows the history of the Earth divided into different periods and eras. It helps us understand when important events like the formation of rocks, the rise of plants and animals, and mass extinctions happened. This scale gives us a big picture of how the Earth and life have changed over millions of years.

WILHARRY ESPIRITU SANTO

I learned about earth eras and periods like mesozoic period and jurassic period and i also learned the techniques people used for study earth history and the age of items

MICHAEL ENCINAS

We learn about geologic time scale is a time line of earth 4.6 billion yesr history divided into 4

part based on major event Eon, Era, Period, Epock

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Mark Aaron C. San Juan

Jhon Homer E. Secreto

Fidel francio V. Panzo

Nathaniel E. Sicada

WHAT IS GEOLOGIC TIME SCALE?

Mark Aaron C. San Juan

The geologic time scale show earth's long history,dividing it into parts to explain when important events happened, like the first life, dinosaur,and big changes in the planets.

Jhon Homer E. Secreto

According to the lesson i learned is the geologic time scale is a system that divides Earth's history into named units such as eons, eras, periods, and epochs based on significant geological and paleontological events. Rock layers, fossils, and other geological evidence serve as representations of these divisions, which aid scientists in comprehending the chronology and evolution of life on Earth. These divisions are arranged stratigraphically, with the oldest layer

Fidel francio V. Panzo

the division of geologic time scale

The geologic time scale is divided into several hierarchical levels, from largest to smallest:

1. *Eon*: The largest unit of time, representing a major stage in the Earth's history. There are four eons: Hadean, Archean, Proterozoic, and Phanerozoic.

2. *Era*: A subdivision of an eon, representing a significant period of time. Examples: Paleozoic, Mesozoic, Cenozoic.

3. *Period*: A subdivision of an era, representing a distinct phase of geological history. Examples: Cambrian, Jurassic, Cretaceous.

4. *Epoch*: A subdivision of a period, representing a smaller unit of time. Examples: Pleistocene, Holocene.

5. *Age*: A subdivision of an epoch, representing a specific time interval.

These divisions help geologists and scientists understand the Earth's history, including major events, climate changes, and the evolution of life.

Nathaniel E. Sicada

What I've learned from the lesson we're studying here in Earth and Life Science is how to determine the age of fossils based on their depth and the rock where they're found, which was discovered by people. The geologic time scale is a fundamental concept in Earth science that helps us understand the planet's 4.5 billion-year history. So, we've also learned that the world is 4.5 billion years old, based on the rocks where fossils are found.

Eon - largest span of time, billion of years.

Era - subdivision of an eon, hundreds of millions of years.

Period - subdivision of an era, tens of millions of years.

Epoch - subdivision of a period, representing a smaller unit of time.

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MEMBERS:

Pascual, Ram Richmon DL

POJA, Rhenz Rei P.

Pantaleon , justine M

Cipriano Olani

Millevo, Legie Nell Ivan SD

mico rapiz

Santiago Elmer A. III

Eugene Reyes

Garry regala

Rey Mark Roda

_________________________________________________________

What is geologic time scale?

The geologic time scale is a system of chronological dating that relates geological strata (layers of rock) to time. It is used by geologists, paleontologists, and other Earth scientists to describe the timing and relationships of events in Earth’s history.

More specifically, it's a timeline of Earth's 4.6-billion-year history, divided into a hierarchy of units:

Eons (largest)

Eras

Periods

Epochs

Ages (smallest)

Geologic Time Scale

- Framework for Earth's history

: Divides Earth's 4.6 billion-year history into manageable sections.

-Major divisions:

Eons (like Hadean, Archean, Proterozoic, Phanerozoic), then divided into eras, periods, epochs.

- Used for: Understanding Earth's evolution, timing of geological events, fossil records.

Purpose of Geologic Time Scale

- Organizes Earth's history

: Helps geologists communicate about timing of events.

- Based on: Rock layers, fossils, significant geological events.

The geologic time scale is like a giant calendar of Earth’s history. Scientists use it to divide the very long time from the formation of our planet up to today into different sections.

Eon – the longest span of time.

Era – a division of an eon, still lasting millions of years.

Period – a smaller part of an era.

Epoch – smaller than a period.

Age – the smallest division.

The geologic time scale is a way to organize Earth’s long history into different time periods.

It helps scientists understand when important events happened—like the formation of the Earth, the rise of dinosaurs, or the appearance of humans.

Think of it like a calendar for Earth’s entire history:

Instead of days and months, it uses eons, eras, periods, and epochs

It starts 4.6 billion years ago (when Earth formed) and goes up to today

The geologic time scale (GTS) is a framework that divides Earth's 4.5 billion-year history into distinct sections based on significant events and changes. It's a tool used by geologists and scientists to understand the timing and relationships between rock formations, fossils, and geological events.

The GTS is typically divided into eons, eras, periods, and epochs. Here's a brief overview:

1. Eons: The largest units of time, with four eons: Hadean, Archean, Proterozoic, and Phanerozoic.

2. Eras: Subdivisions of eons, such as Paleozoic, Mesozoic, and Cenozoic.

3. Periods: Subdivisions of eras, like Cambrian, Jurassic, and Cretaceous.

4. Epochs: Subdivisions of periods, such as Paleocene and Holocene.

The geologic time scale helps scientists:

1. Date rocks and fossils: By correlating rock layers and fossil records.

2. Reconstruct Earth's history: By understanding the sequence of geological events.

3. Understand evolution: By studying the fossil record and changes over time.

The geologic time scale is a fundamental tool in geology, paleontology, and Earth sciences, providing a shared framework for understanding Earth's complex history.

scientific system used to describe the timing and order of events in Earth’s history.

Easy way to understand it:

Imagine Earth's history is a giant book, and the geologic time scale is the table of contents.

It breaks the "book" into chapters (eons), sections (eras), paragraphs (periods), and so on.

Why is it important?

It helps scientists:

Understand when life forms appeared or went extinct

Study how Earth’s surface and climate have changed

Organize fossils and rock layers by age

Summary:

The geologic time scale is a timeline of Earth’s 4.6 billion-year history, divided into parts based on major events like the rise of life or mass extinctions.

The geologic time scale is basically a big timeline that scientists use to understand Earth’s entire history. Earth is around 4.6 billion years old, so to make sense of everything that’s happened—from the first oceans forming, to dinosaurs, to humans—they broke it down into chunks of time.

They named these chunks based on big events. For example:

When life first appeared.

When dinosaurs ruled the Earth.

When a huge asteroid wiped them out.

When humans showed up.

The biggest chunks are called eons. These are split into eras, which are split into periods, and those are split even more into epochs. It's kind of like how a year is split into months, weeks, and days.

Key Features:

1. Radiometric dating: Scientists use radioactive isotopes to determine the age of rocks and fossils.

2. Fossil record Fossils of ancient organisms help date rock layers and reconstruct Earth's history.

3. Geologic events Events like earthquakes, volcanic eruptions, and sea-level changes shape the Earth's surface.

Importance:

1. Understanding Earth's history: The geologic time scale helps us comprehend the sequence of events that shaped our planet.

2. Reconstructing ancient environments: By studying rock layers and fossils, scientists can infer ancient climates, oceans, and life forms.

3. Informing natural resource management Knowledge of the geologic time scale is essential for managing resources like fossil fuels, minerals, and water.

The geologic time scale is a powerful tool for understanding Earth's complex history and the processes that have shaped our planet over billions of years.

system scientists use to divide Earth’s 4.6 billion-year history into different time periods based on major events like the formation of the planet, the evolution of life, and mass extinctions.

Think of it like a timeline or calendar for Earth's history.

It is broken into parts:

Eons(largest)

Eras

Periods

Epochs

Ages(smallest)

Example:

Dinosaurs lived during the Mesozoic Era

We live in the Cenozoic Era, Quaternary Period, Holocene Epoch

In simple words:

The geologic time scale is a timeline that tells the story of Earth’s past, from its beginning to now.

The geologic time scale is like Earth’s calendar for its entire history. Instead of days and months, it uses huge spans of time to show when big events happened—such as new species appearing, others disappearing, or major changes in the planet’s surface and climate.

Scientists divide it into different layers of time:

Eons – the biggest chunks of time.

Eras – smaller parts inside eons.

Periods – inside eras, marking important events.

Epochs – shorter sections within periods.

Ages – the smallest official divisions.

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GROUP MEMBERS

JEFFERSON SAN JUAN

MANNY GALLETA

MYKA DONATO

RICHARD MAGALONA

ROLANDO SEMBRANO

GLEN FRANCISCO

JUZTINE CONCEPTION

JULIUS & JHONCRIS GACER

JOSH TOPACIO

JOSIAH ISADA

THINGS WE LEARNED FROM THE TOPIC GEOLOGIC TIME SCALE

JOSIAH-The geologic time scale is the timeline that organize the Earth from 4.6 billion years ago.

I learned different kind of timeline on earth, EONS,ERA,PERIOD,EPOCH that organize the timeline in earth

DONATO-The geologic time scale is a system used by scientists to divide Earth's history into different time intervals based on major events in geology,climate,and life forms.

SEMBRANO-the geologic time scale is divided into units of time to organize earth history

The division from largest to smallest, are Eon,Era, Period, and Age.

SANJUAN-The geologic time scale is a framework used by geologic to divide Earth's 4.5 billion -year history into manageable units of time.

GACER JULIUS-The geologic time scale 📚 is a way to break down Earth's history into chunks of time based on major geological and biological events.

From the topic Geologic Time Scale, you've learned that:

MAGALONA-From the topic Geologic Time Scale, you've learned that:

- It's divided into Eon, Era, Period, Epoch, and Age.

- These divisions help organize Earth's 4.5 billion-year history.

Want to review any part of the geologic time scale or explore a related topic?

GACER-The geologic time scale! It's a framework that divides Earth's 4.5 billion-year history into distinct sections based on significant events and rock layers.

The main divisions are:

1. *Eons*: Largest units (Hadean, Archean, Proterozoic, Phanerozoic)

2. *Eras*: Subdivisions of eons (e.g., Paleozoic, Mesozoic, Cenozoic)

3. *Periods*: Further subdivisions of eras (e.g., Jurassic, Cretaceous)

4. *Epochs*: Smallest units, often defined by specific geological even

JOSH-You learned about the Geologic Time Scale divisions:

- *Eon*

- *Era*

- *Period*

- *Epoch*

- *Age*

These help organize Earth's geological history.

JUZTINE-Importance

1. *Understanding Earth's History*: The geological time scale helps us comprehend the Earth's evolution.

2. *Reconstructing Past Environments*: By studying rock layers and fossils, scientists can reconstruct ancient environments.

GLEN-Yooo! 🌋 So you learned about the geologic time scale? That's like divin' into the history of Earth, bro! 😎

The geologic time scale is like a huge timeline of Earth's history, broken down into eons, eras, periods, and epochs. It's used to describe when stuff happened like major geologic events, evolution of life, and changes in Earth's environment.

Here's a quick rundown of the main divisions of the geologic time scale:

- *Eons*: The biggest chunks of time (like Hadean, Archean, Proterozoic, Phanerozoic).

- *Eras*: Within eons, like Paleozoic, Mesozoic, Cenozoic in the Phanerozoic eon.

- *Periods*: Like Cambrian, Jurassic, or Quaternary.

- *Epochs*: Smaller divisions like Pleistocene or Holocene.

GALLETA-1. *Mass extinctions*: Events that led to the extinction of many species.

2. *Continental drift*: The movement of continents over time.

3. *Climate changes*: Shifts in Earth's climate, including ice ages and warm periods.

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Group Members:

Fidel Enrique M. Ariete

John Cyrus U. Bautista

Mansueto Lover Boy P. Deloy

Marky Cielo Dorado

Aldrin Balmedina

Ron Balatibat

Jansen Brylle J. Avenilla

James Lasher A. Arevalo

Vhiel C. Angeles

Prince John Alegre

WHAT WE HAVE LEARNED ABOUT THE GEOLOGIC TIME SCALE

It is used to organize Earth's geologic history. We have learned about the divisions of the Geological Time Scale, those being:

Eons, Eras, Periods, Epochs

Eons being the longest and Epochs being the shortest.

RELATIVE AND ABSOLUTE DATING

Relative Dating is a method to determine the age of rocks in relation to other materials and/or events, without necessarily knowing their absolute age.

Absolute Dating is a method used to numerically determine and specify the age of rocks in years. Radioactivity is also used as a factor in Absolute Dating, using radioactive decay to determine the age of rock aswell.

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Group member

Ledesma, Prince Huey A.

Morales, Shekinah U.

Ramos, Yna H.

Mero, Martin jr M.

Santos, Cristel Ann R.

Perante, Michaella M.

WHAT IS GEOLOGIC TIME SCALE?

•The GEOLOGIC TIME SCALE is a framework that divide Earth's 4.5 Billion year history into district section based on significant event and changes, there are 4 geologic time scale; Eons, Eras, Period and events.

Eon – Longest span of time, billions of years.

Era – Subdivision of an eon, hundreds of millions of years.

Period – Subdivision of an era, tens of millions of years.

Epoch – Subdivision of a period, millions of years.

•It records major Earth events

Life beginnings (first bacteria) in Precambrian, Age of fishes in the paleozoic era, Age of dinosaurs in the Mesozoic era Age of mammals (and humans) in the Cenozoic Era

CONCLUSION:

•I learned that life on Earth has gone through many stages. Early life began in the oceans, dinosaurs dominated during the Mesozoic Era, and mammals became more common in the Cenozoic Era. The scale also records mass extinctions, which shaped the survival and evolution of species.

•Most importantly, Irealized that humans been on Earth for only a tiny part of it's history, reminding me that planet has a deep and ancient past.

The geologic time scale helps ne appreciate how much the Earth has changed and how like continues evolve Duer time.

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Carlisle Ele, Cruz Deibie

In geologic time scale they are some history's that we didn't know further than before and yet we know it now we know how the relative and absolute dating process from they're age and help us to know the history.

Sheilla Siega

The geologic time scale is a framework that divides earth 4.5 billions-years history into distinct section, it's divide into eons, era, period, epochs each representing a specific time frame.

Francine Caluma

I have learned about geologic time scale, I've also learned that earth history is divided into eons, eras, period, epochs I understand the difference of it.

Pauleen Manlangit

Based on the geologic time scale is based on the geological rock record, which includes erosion, mountain building and other geological events. Over hundreds to thousands of millions of years continent, oceans ang mountain ranges.

Braza James

Relative dating determined the sequence of events, while absolute dating provides exact aged using radiometric methods. The fossil record on rock layers help to reconstruct Earth's history.

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GROUP 3 HE-C

MEMBERS!!!

MALLANAO KARL

JULAIN JAYCEE

OBRERO JOHN MARK

SAMSONA ALBERT

DANTE VIRGILIO

LOVEDEORO CLIFFORD

The geologic time scale is a fundamental concept in Earth  that helps us understand the planet's 4.5 billion-year history. Through this framework, we've learned about the major divisions of time, including eons, eras, periods, epochs, and ages. These subdivisions enable us to organize and communicate about the vast expanse of Earth's past.

Earth's immense age: The geologic time scale highlights the planet's incredible history, from its formation to the present day. Significant geological events: Major events like mountain building, volcanic eruptions, and changes in sea levels have shaped our planet. Evolution of life: The fossil record provides evidence of the evolution of life on Earth, from simple organisms to complex species.

Relative and absolute dating: Methods like superposition, cross-cutting relationships, and radiometric dating help determine the age of rocks and fossils.

By studying the geologic time scale, we've gained a deeper understanding of Earth's history, including the development of life, the formation of rocks, and the impact of geological events. This knowledge has far-reaching implications for fields like geology, paleontology, and environmental science.

"Summary"

The geologic time scale is a crucial tool for understanding Earth's history, providing insights into the planet's development, life evolution, and significant geological events. By applying relative and absolute dating methods, scientists can reconstruct the past and better comprehend the complex processes that have shaped our planet

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SHAKIRA VILLANUEVA

CHRISTIAN JAY SANTOS

BUTCH MONTERON

JOHN KAIZER ROA

AL BRENT ALEJANDRO

We learned that the geologic time scale is the scientists determine ages using relative dating (comparing rock layers) and absolute dating. Fossils in sedimentary rock layers help identify the age of the rocks and the life forms that existed during different periods. The time scale helps track Earth’s major events, like the formation of continents, climate changes, and evolution of life. Movement of Earth’s plates affected the distribution of land, oceans, and etc. Different time periods had major climate changes, from ice ages to warm tropical periods. Human history is extremely short compared to the vast geologic timescale. Geologists use the geologic time scale to study Earth’s history and predict possible future changes.

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Group members

Latagan

Paz

Actao

Calang

Acuesta

Things we have earned from the topic Geologic Time Scale are

Paz -The Geologic Time Scale is a timeline that organizes Earth’s 4.6-billion-year history.

Latagan - It is divided into eons, eras, periods, epochs, and ages based on major geologic and biological events.

Acuesta - Scientists use it to understand when significant changes happened, such as mass extinctions, climate shifts, and the rise of new life forms.

Actao -The largest division is the eon (e.g., Precambrian, Phanerozoic,) and the smallest is the age.

Calang - Each division reflects important changes in Earth’s surface, atmosphere, and living organisms.

Calang - The scale is built using evidence from rock layers, fossils, and radiometric dating.

Paz - It shows how life evolve from simple microorganisms to complex plants and animals over vast spans of time.

Actao - And geologic time scale is how scientists determine the age of rocks or fossils through relative dating (comparing rocks or fossils which is older or younger) and absolute dating (determine the actual age of a rock or fossils)

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Arrange the correct sequence of the division in the geologic time scale, by writing the four major division. Refer to the image above. Post your answer on the tablet.

1. Epochs, Periods, Eras, Eons

2. Cenozoic, Paleozoic, Mesozoic.

3. Quaternary, Neogene, Paleogene

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What are the things that you have learned from the topic GEOLOGIC TIME SCALE? 

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What are the things that you have learned from the topic GEOLOGIC TIME SCALE? 

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1. Eons, Eras, Periods, Epochs

2. Paleozoic, Mesozoic, Cenozoic

3. Paleogene, Neogene, Quaternary

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1. Eons, Era, Period, Epoch

2. Paleozoic, Cenozoic, Mesozoic

3. Paleogene, Neogene, Quarternary

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Eons, eras, period, epochs

Paleozoic, mesozoic, Cenozoic

Paleogene, neogene,quartenary

# data[].attributes.body
1. eons, era, period, epoch

2. paleozoic, cenozoic, mesozoic

3. paleogene, neogene, quaternary

# data[].attributes.body
1. Eons, Eras, Periods, Epochs

2. Paleozoic, Mesozoic, Cenozoic

3. Paleogene, Neogene, Quaternary