Thursday, 1/29/2015 Objectives: Describe Earth’s interior.

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Presentation transcript:

Thursday, 1/29/2015 Objectives: Describe Earth’s interior. Explain how technology has helped us learn more about Earth’s technology. Did you know that you can make 100,000 slices of toast with the energy of 1 lightning bolt?

Earth’s Interior Earth’s Layers Core Mantle Inner core – solid Ni & Fe 4300° C 1222 km Outer core – liquid Ni & Fe 3700° C 2258 km Mantle Mesosphere – rigid rock Asthenosphere – plastic-like molten rock 1000° C 2811 - 2886 km Lithosphere – rigid uppermost part of asthenosphere and the crust Crust oceanic – basaltic rock Continental – granitic rock 16° C - 1200° C 5-80 km

Liquid Outer Core Magnetic Field Video – Earth’s magnetism in HD

True North vs Magnetic North North ends of magnets are attracted to south ends of magnets. North end of magnets are typically colored red.

How do we know what we know about Earth’s interior? Examine rocks that come to the surface with magma. Use seismographs

Temperature Inside the Earth Between which depths does Earth’s temperature increase slowest? Why does the graph show a temp of 16° C at 0m of depth? How does temp change with depth?

Mantle

Earth’s Crust

Patterns What happens to temperature, pressure, and density as one goes form the crust to the inner core?