Packet 4: Earth’s Interior. Circulation due to differences in density which causes convection...

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QUIZ CARDS Packet 4: Earth’s Interior

Transcript of Packet 4: Earth’s Interior. Circulation due to differences in density which causes convection...

Page 1: Packet 4: Earth’s Interior.  Circulation due to differences in density which causes convection currents  Earth’s interior is inferred by scientists.

QUIZ CARDSPacket 4: Earth’s Interior

Page 2: Packet 4: Earth’s Interior.  Circulation due to differences in density which causes convection currents  Earth’s interior is inferred by scientists.

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

Q4-1: Earth’s Layers

Page 3: Packet 4: Earth’s Interior.  Circulation due to differences in density which causes convection currents  Earth’s interior is inferred by scientists.

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

Q4-2: Seafloor Spreading