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QUIZ CARDS

QUIZ CARDS . Packet 4: Earth’s Interior. Q4-1: Earth’s Layers. Circulation due to differences in density which causes convection currents Earth’s interior is inferred by scientists based on earthquake waves (seismic data) and studying meteorites

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QUIZ CARDS

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  1. QUIZ CARDS Packet 4: Earth’s Interior

  2. Q4-1: Earth’s Layers • Circulation due to differences in density which causes convection currents • Earth’s interior is inferred by scientists based on earthquake waves (seismic data) and studying meteorites • ESRT page 10 – Inferred Properties of Earth’s Interior • ESRT front page – Chemical Composition chart

  3. Q4-2: Seafloor Spreading • Continental drift suggests present-day continents once fit together like puzzle parts • Earth’s magnetic field has reversed with time • Magnetic reversals (orientation) support theory of seafloor spreading • Rising convection currents cause high-heat floors at the ridge center • Rocks are youngest at ridge, older as you move away

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