Warm-Up January 17 Write What You Know!

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Presentation transcript:

Warm-Up January 17 Write What You Know! Write everything you know about the prompt below for five minutes, try for at least 3-4 complete sentences. Why do the tectonic plates move around on the surface of the Earth? What causes this to happen?

No school on Monday, January 20 Martin Luther King Day Quiz on Tuesday, January 21

Convection and Drift Notes (1.2 – 1.3)

Heat Transfer Review: 3 types of heat transfer: Radiation: transfer by EM waves through space Conduction: transfer by direct contact Convection: transfer through movement of a fluid (liquid, gas, plastic solid) in convection currents

Convection in Mantle What causes the tectonics plates to move? The heat from our core and great pressure causes solid mantle rock to flow Plastic: solids that can flow like fluids

Continental Drift Theory of Continental Drift 1910 Alfred Wegener, but not accepted for over 50 years. Why? Pangaea: 300 mya, all of today’s continents were once part of a single super-continent, then drifted apart We now know this is a cycle, that continents are constantly either coming together or breaking apart

Continental Drift Evidence from Land Features Evidence from Fossils Continental shapes, mountains, fossil fuel deposits Evidence from Fossils Animal fossils, plant fossils, microbe fossils Evidence from Climate Fossil climate evidence shows once tropical areas are now polar