the earth’s structure. the earth’s lithosphere s and p waves s and p waves travel at different...

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The Earth’s Structure

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Page 1: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

The Earth’s Structure

Page 2: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

The Earth’s Lithosphere

Page 3: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

S and P Waves

• S and P waves travel at different speeds

• Both waves travel through sold material

• Only P waves can travel through liquids

• Seismology is the study of vibrations in the Earth

• What causes vibrations?

Page 4: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

Seismic Data

Page 5: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

Seismology

• Earthquakes cause waves inside Earth

• Seismology allows us to study the interior of the Earth

• The speed of the waves depends on the both the density and temperature of the mantle and the core

Page 6: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

Earth’s Interior

• Seismic data can beinterpreted to find the

• Density and temperature of the Earth’s interior

• The metal core is denser as predicted by differentiation

• Why is the inner core solid?

• Pressure!

Page 7: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

Molten Iron Core

• Iron is a good conductor

• The Earth’s spincreates eddies inthe liquid outer core

• The iron in theouter core canproduce magneticfields

Page 8: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

Magnetosphere

Page 9: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

The Earth’s Crust

Page 10: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

Plate Tectonics

Page 11: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

Seismic Activity

Page 12: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

Continental Drift

Page 13: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

Continents a Long Time Ago

Page 14: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

Tectonic Effects on Geography

Page 15: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

Tectonic Effects on Geography

Page 16: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

California: On the Edge

Page 17: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

Earth’s Atmosphere

Page 18: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

Oxygen and Ozone

Page 19: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

Carbonate-Silicate Cycle

Page 20: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

Ocean Balances Climate

Page 21: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

Ice Ages End

Page 22: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

Upsetting the Balance

Page 23: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

Global Warming

Page 24: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

Depletion of Ozone

Page 25: The Earth’s Structure. The Earth’s Lithosphere S and P Waves S and P waves travel at different speeds Both waves travel through sold material Only P

How the Moon Formed

• Best theory involves a catastrophic collision

• Fission, accretion, and capture theories all have weaknesses

• Figure depicts fission, accretion, and capture theories