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Related Flashcards
Cards In This Set
| Front | Back |
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What is the hydrologic cycle?
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 - earth's water and movements in relation to land |
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What is the rock cycle?
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 - How rocks are formed |
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Earth and solar system formation?
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- rotating spherical cloud of gas dust debris- cloud flattened into a disk
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What are earths original heat sources?
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- sun- gravity- meteorite impact- radio activity = earths internal heat
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What are the spheres in order?
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Atmosphere = gashydrosphere = liquidlithosphere = solidasthenosphere = soft plastic
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What are the two cores?
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Outer core = liquidinner core = solid
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How do the earth's layers behave?
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- the further in you go, the more dense it is
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How old is the earth?
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- 4.5 billion years
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How do we know how old the earth is?
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- by studying the age of the rock that are on the earth
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How do we make an igneous rock?
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- melting and crystallization
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How do you make a metamorphic rock?
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- heat and pressure
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How do you make a sedimentary rock?
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- weathering and gluing
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How does the density of the earth materials create the stratified layers inside the earth?
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The denser goes farther in the middle, as you move outside of the earth it becomes less dense.
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What are the main sources of internal energy in the earth?
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- radioactivity and gravity
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What are the sources of external energy?
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- sun - astroids = rare not
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