Term
| The Earth is about _____ billions years old. |
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Definition
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Term
The Composition of the earth
1
2
3
4 |
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Definition
1.crust
2.mantle
3.outer core
4.inner core |
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Term
1.Atmosphere _____
2.Hydrosphere ____
3.Lithosphere _____ |
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Definition
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Term
| what is continental drift? |
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Definition
| 25 million years ago the continents were 1 giant land mass |
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Term
| when the continents were 1 giant land mass what was the name of this land mass? |
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Definition
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Term
What is Plate tectonics?
1.
2.
3. |
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Definition
1. Continents are on plates
2. They are constantly moving
3. This causes changes to the earth |
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Term
What are the 3 different boundaries and what does each boundary do?
1.
2.
3. |
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Definition
1. Divergent (spreading)
2. Convergent (colliding)
3. Transform (sliding) |
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Term
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Definition
| Breakdown of rock, soil, or minerals |
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Term
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Definition
| the process by which the surface of the earth is worn away by the action of water, glaciers, winds, waves, etc. |
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Term
What is the breakdown of water on earth?
1
2
3
4 |
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Definition
1 salt 97%
2 fresh 3%
3 frozen 2%
4 human water 1% |
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Term
| Water covers how much of the earth? |
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Definition
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Term
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Definition
| Can be replaced within a generation |
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Term
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Definition
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Term
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Definition
| Narrow waterways between 2 large bodies of water, could be blocked/closed |
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