Exercise
The Mantle and Convection Currents
Investigate Earth's mantle and the dynamic convection currents operating within it. Discover how heat causes movement beneath the Earth's crust.
Questions
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MultiChoice
Which is Earth's thickest layer, making up most of Earth's volume?
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MultiChoice
How deep does Earth's mantle extend beneath the crust?
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MultiChoice
What causes convection currents to form in the mantle?
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MultiChoice
In a mantle convection current, what happens to warmer mantle rock?
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MultiChoice
In a mantle convection current, what happens to cooler mantle rock near the top?
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MultiChoice
What is the primary driving force behind tectonic plate movement?
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MultiChoice
What element compounds dominate the composition of mantle rock?
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MultiChoice
What is the lower region of the mantle between the asthenosphere and outer core called?
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MultiChoice
How does pressure change as you descend deeper into the mantle?
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MultiChoice
What range of temperatures is typical inside Earth's mantle?
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MultiChoice
How fast do mantle convection currents move rock?
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MultiChoice
What column of hot rock rising from deep in the mantle creates island chains like Hawaii?