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Earth’s Structure

Earth’s Structure. “Plastic” – not solid or liquid – what’s up with that??? OK – lets see:. HDWK? How do we know?. It’s all about Earthquakes – P waves and S waves. P Waves are Pressure Waves – Primary Waves – They move Back and Forth <->

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Earth’s Structure

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  1. Earth’s Structure

  2. “Plastic” – not solid or liquid – what’s up with that??? • OK – lets see:

  3. HDWK?How do we know? • It’s all about Earthquakes – P waves and S waves. • P Waves are Pressure Waves – Primary Waves – They move Back and Forth <-> • S waves are Shear Waves – Secondary Waves – They move Up and Down /\ \/ • P can go through solid and liquidS can only go through solid

  4. Shadow Zones 103° Solid Liquid Solid

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