https://padlet.com/gemmarie7104/ES QUEJADA_STEM GR11-AM_SECTION 2 en-us 2021-10-14 14:31:34 UTC 2021-10-14 16:46:57 UTC hello@padlet.com gemmarie7104 https://padlet.com/gemmarie7104/ES/wish/1817505780 THEORIES ON THE ORIGIN OF THE UNIVERSE

WHAT HAVE YOU LEARNED?

• UNIVERSE IS VERY MYSTERIOUS AND WONDERFUL CREATION THAT UNTIL NOW THAT THERE NO CONCRETE EVIDENCES TO PROVE THE EXISTENCE OF UNIVERSE.

• MODERN THEORIES ON THE ORIGIN OF UNIVERSE

✓ BIG BANG THEORY
- is the prevailing cosmological model explaining the existence of the observable universe from the earliest known periods through its subsequent large-scale evolution.

✓ OSCILLATING UNIVERSE
- is a cosmological model that combines both the Big Bang and the Big Crunch as part of a cyclical event.

✓ STEADY STATE THEORY
- is a view that the universe is always expanding but maintaining a constant average density, matter being continuously created to form new stars and galaxies at the same rate that old ones become unobservable as a consequence of their increasing distance and velocity of recession.

✓ INFLATIONARY UNIVERSE
- is that space itself is expanding, and that it expanded very rapidly within the first fraction of a second after the Big Bang. 

✓ MULTIVERSE
- is that our universe, with all its hundreds of billions of galaxies and almost countless stars, spanning tens of billions of light-years, may not be the only one.

AND DID YOU KNOW THAT?

• UNIVERSE CAME FROM THE LATIN WORD "UNIVERSUM".
- which means all together, whole,entire,collective,general, literally turned or combined into one.]]> 2021-10-14 15:43:00 UTC https://padlet.com/gemmarie7104/ES/wish/1817505780 gemmarie7104 https://padlet.com/gemmarie7104/ES/wish/1817557892 THEORIES ON THE ORIGIN OF THE SOLAR SYSTEM

WHAT HAVE YOU LEARNED?

• ENCOUNTER, NEBULAR AND PROTOPLANET IS THEORIES ON THE ORIGIN OF THE SOLAR SYSTEM.

✓ NEBULAR HYPOTHESIS
- is the idea that a spinning cloud of dust made of mostly light elements, called a nebula, flattened into a protoplanetary disk, and became a solar system consisting of a star with orbiting planets.

✓ PROTOPLANET HYPOTHESIS
- is a large planetary embryo that originated within a protoplanetary disc and has undergone internal melting to produce a differentiated interior.

AND DID YOU KNOW THAT?

• THE DIFFERENCE BETWEEN NEBULAR HYPOTHESIS AND PROTOPLANET HYPOTHESIS?
- is Nebular hypothesis is that hypothesis which explains about the whole universe and the solar system had started as a cloud and then compressed under the immense pressure and activity of the gravity. ... Whereas, in protoplanet Hypothesis we get to know the present solar system and universe working.]]> 2021-10-14 16:01:27 UTC https://padlet.com/gemmarie7104/ES/wish/1817557892 gemmarie7104 https://padlet.com/gemmarie7104/ES/wish/1817618399 MINERALS & ROCKS

WHAT HAVE YOU LEARNED?

• THERE ARE THREE TYPES OF ROCKS
(IGNEOUS, SEDIMENTARY, METAMORPHIC)

✓ IGNEOUS 
- The melt originates deep within the Earth near active plate boundaries or hot spots, then rises toward the surface. Igneous rocks are divided into two groups, intrusive or extrusive, depending upon where the molten rock solidifies.

✓ SEDIMENTARY
- Sedimentary rocks are one of three main types of rocks, along with igneous and metamorphic. They are formed on or near the Earth’s surface from the compression of ocean sediments or other processes.

✓ METAMORPHIC
- Metamorphic rocks start as one type of rock and with pressure, heat, and time gradually change into a new type of rock.

• TWO TYPES OF MINERAL

✓ SILICATE MINERAL
Silicate minerals all contain silicon and oxygen the two most abundant elements in the Earth's crust. Silicates are by far the more abundant of the two groups of minerals, comprising some 75 percent of all known minerals and 40 percent of the most common minerals. 

✓ NON - SILICATE MINERALS
- Non-silicates are minerals that do not include the silicon oxygen units characteristic of silicates. They may contain oxygen, but not in combination with silicon. Their structure tends to be more variable and less complex than that of the silicates, although they too can be subdivided into different classes based on their composition.

AND DID YOU KNOW THAT?

• ROCKS ARE NATURALLY SOLID AGGREGATES OF ONE OR MORE MINERALS.
• ROCKS CAME FROM THE GREEK WORD "LITHOS" WHICH MEANS STONE.

• MINERALS ARE THE BUILDING BLOCKS OR ROCKS. 
• SCIENTIST DEFINES MINERAL AS A NATURALLY - OCCURRING CHEMICAL COMPOUND, IT IS SOLID IN NATURE AND IT IS ORGANIC
(WITHOUT CARBON ELEMENT).]]> 2021-10-14 16:24:01 UTC https://padlet.com/gemmarie7104/ES/wish/1817618399 gemmarie7104 https://padlet.com/gemmarie7104/ES/wish/1817652994 ORES 

WHAT HAVE YOU LEARNED?

• ORES HAS A GREAT ECONOMIC VALUE.

✓ Ore
- is natural rock or sediment that contains one or more valuable minerals, typically containing metals, that can be mined, treated and sold at a profit.

• THERES TWO TYPES OF MINING
(SURFACE AND UNDERGROUND)

✓ SURFACE MINING 
- It has been estimated that more than two-thirds of the world’s yearly mineral production is extracted by surface mining.
- There are several types of surface mining, but the three most common are open-pit mining, strip mining, and quarrying.

✓ UNDERGROUND MINING
- Underground mining usually involves the digging of subversive tunnels and rooms below ground surface.
- More expensive than surface mining and can be dangerous. 

AND DID YOU KNOW THAT? 

• PHILIPPINES BELONGS TO THE PACIFIC RING OF THE FIRE WHERE VOLCANO AND PLATE TECTONICS IS ACTIVE. 
• PHILIPPINES IS RICH IN MINERALS AND ORE.]]> 2021-10-14 16:37:42 UTC https://padlet.com/gemmarie7104/ES/wish/1817652994