Cycles of the Earth. Ch 18 Trefil & Hazen The Sciences. All Matter above and beneath the Earth’s surface moves in cycles. Sun radiates heat down on the ocean of air and water. Earth’s hot core or geothermal energy spreads upward . What drives the earth cycles? .
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Ch 18 Trefil & Hazen
Earth’s hot core or geothermal energy spreads upwardWhat drives the earth cycles?
Trade Winds: easterlies at equator
In the tropics, winds prevail from E to W.
Air warmed new equator travels pole-ward but gradually cools and sinks. Earth’s rotation deflects surface winds
In the polar regions, cold dense air sinks and moves away from poles.
Earth’s rotation deflects surface wind from East to West.
Near 30o N & S latitude, Earth’s rotation moves air from West to East, as warm air moves to poles.
ü Each type of rock records a different complex past.
ü Each type of rock can be changed from one form to another and back again.
geologists call these transformations the “rock cycle”
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