1. Convection Current in the Mantle SAYRO PAW

2. The Four Layers of Earth Inner Core Outer Core Mantle Crust The inner core is the hottest layer in the Earth The outer core is a liquid and very hot. The mantle is liquid rock just like the outer core, and it is the thickest layer. The crust is solid, and it is the thinnest layer.

3. Mantle Outer Core Inner Core The mantle is made of liquid rock. The mantle’s magma heats up because of the inner core. The magma goes up because hot things go up. Then the mantle’s magma cools down when it reaches the crust, and it moves down. Convection current is a movement made because of heat differences. Crust

4. Convection Currents What is Convection Current? Convection Current is the magma that drive plate tectonics. The process that happen in Earth is called Convection Currents. Convection Currents are from heat differences where hot things go up and cold things go down. Convection currents movement are made because of heat differences. Where do you find Convection Current on Earth? Convection Currents occur in the asthenosphere mantle due to the molten rock. Asthenosphere is the upper zone of Earth’s mantle, located directly below the lithosphere; a hot, slowly flowing layer of relatively weak rock upon which tectonic plates move.

5. How Do Differences In Temperature Cause Convection Currents? Differences heat from the mantle causes Convection Current: which slowly move the crust. Convection Currents cause the movement of the Earth crust. It directly causes the continental drift, volcanoes, seafloor spreading, and earthquakes.

6. Why do the Plates Move?  Large convection currents in the asthenosphere transfer heat to the surface, where plumes of less dense magma break apart the plates at the spreading centers, creating divergent plate boundaries.  As the plates move away from the spreading centers, they cool, and the higher density basalt rocks that make up ocean crust get consumed at the ocean trenches/subduction zones. The crust is recycled back into the asthenosphere.

7. This video show how Convection Current occurs in the mantle of the Earth.

8. Short Clip of How Convection Currents Work

9. References  http://serc.carleton.edu/resources/41181.html http://serc.carleton.edu/resources/41181.html  http://www.ucmp.berkeley.edu/education/dynamic/session1/sess1 _earthcurrents.html http://www.ucmp.berkeley.edu/education/dynamic/session1/sess1 _earthcurrents.html  http://www.bbc.co.uk/bitesize/ks3/geography/physical_processes/ plate_tectonics/revision/2/ http://www.bbc.co.uk/bitesize/ks3/geography/physical_processes/ plate_tectonics/revision/2/  http://www.techtimes.com/articles/10682/20140719/volcanic- plumbing-of-mount-rainier-mapped.htm http://www.techtimes.com/articles/10682/20140719/volcanic- plumbing-of-mount-rainier-mapped.htm  http://www.ehow.com/list_6581412_causes-convection-currents- mantle_.html http://www.ehow.com/list_6581412_causes-convection-currents- mantle_.html  http://www.nytimes.com/2014/08/04/world/asia/deadly- earthquake-in-southwest-china.html?ref=science&_r=0