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How do we know that earth has changed and will continue to change over time>#1

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How do we know that earth has changed and will continue to change over time>#1

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We know that earth continues to change from the earths constructive and reconstructive forces. By studying the features that continue to change, scientists can notice the changes over time. Due to these reasons, we know that earth has changed and will continue to change.

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How does the sun affect the other planets#2

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How does the sun affect the other planets#2

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The sun heats other planets in our solar system. The location of each planet in accordance to the sun impacts how much heat the planet receives. Secondly, the suns gravitational force holds our solar system together.

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What does the Hertzsprung-Russel help  a person do?#3

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What does the Hertzsprung-Russel help  a person do?#3

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the HR diagram helps people see the relationship between color, temperature, and luminosity in a star.

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Describe the process that causes different stars to burn bright and colorful#4

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Describe the process that causes different stars to burn bright and colorful#4

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Energy from fusion reactions in the core of the stars pushes energy outward through the different layers of the star until it reaches the outer layer. After this process, the outer layer of the star glows brightly sending energy out into space as electromagnetic radiation. The brightness typically represents the amount of energy in the star and the color represents the distance the star is from earth.

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Explain why it’s possible for there to be other planets similar to Earth in other distant galaxies#5

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Explain why it’s possible for there to be other planets similar to Earth in other distant galaxies#5

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It is possible for there to be other planets similar to earth because we have only discovered a fraction of what is out there. Although we have not discovered everything we do know the elements. since things are made up of the elements it is likely that there are other planets similar to earth somewhere out there.

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What Do We Know About How Earths Features Are Formed?#6

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What Do We Know About How Earths Features Are Formed?#6

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We know that Earths Features are formed through Constructive land forms which cause land forms to grow. Overtime earths features can get eroded away by water,wind,ice,and gravity. Earth features are continuously changing and looking at earths changing features such as rocks can help scientists determine the earths age.

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What evidence might indicate that the processes you described above may also have occurred sometime in the past? #7

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What evidence might indicate that the processes you described above may also have occurred sometime in the past? #7

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Many of the processes shown such as erosion from wind, water, weathering happen gradually. This suggests that these processes occurred sometime in the past.

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How Do the principles of relative dating help us figure out the age of rocks? #8

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How Do the principles of relative dating help us figure out the age of rocks? #8

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The relative ages of rocks are important for understanding Earth's history. New rock layers are always deposited on top of existing rock layers. Therefore, deeper layers must be older than layers closer to the surface. This information is useful for scientists to notice patterns and form theories about history .

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Use geologic, paleontologic, and climatic evidence to support the claim that indicates Africa and South America were once part of a single continent. #9

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Use geologic, paleontologic, and climatic evidence to support the claim that indicates Africa and South America were once part of a single continent. #9

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Africa and South America were once part of a single continent. The theory of plate tectonics , which suggests that earth's outer shell is broken up into several plates that slide over earth's mantle. scientists have also discovered during the time of Pangea , the climate was generally arid with short, recurring wet periods that occasionally included catastrophic flash floods. Scientists Yoshida and Santos created additional geological models to predict mantle convection and continental movement patterns 250 million years in the future. By using past evidence and coming up with new tools to predict into the future, we can assume that Africa and South America were once a single Continent and overtime tectonic plates have shifted from convection from magma, causing the continents to separate to the way they are now.

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How does the theory of plate tectonics account for the features and processes (sea floor spreading, mid-ocean ridges, subduction zones, earthquakes and volcanoes, mountain ranges) that occur on or near the Earth’s surface? #10

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How does the theory of plate tectonics account for the features and processes (sea floor spreading, mid-ocean ridges, subduction zones, earthquakes and volcanoes, mountain ranges) that occur on or near the Earth’s surface? #10

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sea floor spreading, earth quakes, volcanoes, and mountain ranges all are results of mantle convection. Sea floor spreading occurs at divergent plate boundaries.  Seafloor spreading occurs along mid-ocean ridges—large mountain ranges rising from the ocean floor. Earthquakes occurs at transform boundaries(when two plates slide against each other.)  when pressure becomes too much an earthquake occurs as energy is released. Volcanoes release magma at a divergent boundary eventually resulting in mountain ranges being formed .

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How do tectonic plates move (use the concepts of mantle convection and the cooling and sinking of aging ocean plates)?#11

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How do tectonic plates move (use the concepts of mantle convection and the cooling and sinking of aging ocean plates)?#11

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Tectonic plates move through the process of convection that takes place in the magma beneath the tectonic plates. Movement can occur in several places including convergent , divergent, and transform boundaries.

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Based on the presentation about the Hawaiian Islands and the behavior of the Pacific Plate respond to the following: The Pacific Plate is apparently moving faster today than it did in the past.  Does this support the principle of uniformitarianism mentioned in previous weeks?#12

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Based on the presentation about the Hawaiian Islands and the behavior of the Pacific Plate respond to the following: The Pacific Plate is apparently moving faster today than it did in the past.  Does this support the principle of uniformitarianism mentioned in previous weeks?#12

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Yes this information does support the principle of Unitarianism. The plates move in the past and they will continue to move in the future. One example of this is Kauai moving from its previous location over the hot spot.