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16 Cards in this Set
- Front
- Back
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How can the deep interior of the earth be mapped?
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using seismic waves
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What is the outer most layer of the earth called?
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lithosphere
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What is the liquid layer of the Earth's core called?
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outer core
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Why is the mantle denser than the crust?
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because it contains more magnesium
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What does the core consist mainly of?
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iron
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What determines the different speeds seismic waves travel through the Earth's layers?
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density
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Name the order of the layers of the Earth from the surface to the center.
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lithosphere, asthenosphere, mesosphere, outer core, inner core
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What do tectonic plates float on?
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the asthenosplere
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What causes changes in density in the asthenosphere?
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thermal energy
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What do tectonic plates consist of?
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both continental and oceanic crust
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What is the mantle?
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the layer of rock that comprises 67% of Earth's mass
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What is the core?
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the layer of Earth made mostly of iron
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What is the crust?
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the thin, solid outermost layer above the mantle
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What is the lithosphere?
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the rigid layer made up of crust and upper mantle
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what is the asthenosphere?
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the layer made of solid rock that slowly flows
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What is the mesosphere?
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the lower part of the mantle
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