The Earth

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The Earths interior Cin-Ty Lee Rice University
With help from Anna Courtier (James Madison
University)
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How do we know whats inside the Earth?
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Yummy?
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Tap and listen?
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Earthquakes make noise!
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Earthquakes generate waves through the Earth and
we listen
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Yummy!
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Can we drill?
www.earthscope.org
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But the Earth is 6730 km in radius!
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The crust beneath Texas is 35 km thick -not that
far, but too far to dig!
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Going to the center of the Earth is like driving
to Alaska
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Use volcanoes to drill
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The mantle is green with olivine!
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(No Transcript)
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The core is iron metal
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How hot is it inside the Earth?
2000 degrees!
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Why is the Earth so hot inside?
Earth was formed by the accretion of little
asteroids and small planets Releases heat during
impact
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Earth wants to lose its heat, so the green mantle
convects
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Plate tectonics is how our planet cools
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Earths record is in the rocks