Earth's Interior
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| How do scientists study Earth's interior? | Scientists study how seismic waves travel through different elements and states of matter.
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| Which layer has the greatest mass? | Earth's mantle
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| Which layer is composed mainly of iron and nickel? | Earth's core
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| Which physical layer is the strong, lower part of the mantle? | Earth's mesosphere
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| Which physical layer includes the rigid crust? | Earth's lithosphere
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| Which physical layer flows slowly, carrying the crust? | Earth's asthenosphere
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| Which physical layer is a dense, solid ball of metal? | Earth's inner core
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| Which physical layer is dense, liquid, and metal? | Earth's outer core
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| What are broken, solid pieces of lithosphere called? | Tectonic plates
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| Which of the two types of crust is more dense? | Oceanic crust
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| Which of the two types of crust is less dense? | Continental crust
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| What causes tectonic plates to move sideways? | Convection currents
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| What causes tectonic plates to be pulled under? (trench) | Slab pull
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| According to WHAT have each of Earth's layers settled? | Density
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| What happens to the temperature as you travel from the crust to the core? | Temperature increases
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| What does the word part 'litho' mean? | ROCK
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| What does the word part 'astheno' mean? | WEAK
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| What does the word part 'meso' mean? | MIDDLE
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| What does the word part 'sphere' mean? | BALL
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| What does the word part 'core' mean? | HEART
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| What is the name given to the (invisible) line that separates of the crust and mantle? | Mohorivicic's discontinuity
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