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Movement in the layers http://convectioncurrent.info.

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Presentation on theme: "Movement in the layers http://convectioncurrent.info."— Presentation transcript:

1 Movement in the layers

2 Occurs in asthenosphere Movement is convection
Movement in mantle Occurs in asthenosphere Movement is convection Caused by changes in heat and density More dense Less dense

3 the number of particles in a substance
Density the number of particles in a substance How tightly packed the particles are Draw example More dense material Will sink Less dense material Will rise or float

4 Convection As mantle is heated by outer core the particles (atoms and molecules) move faster and farther apart This movement makes the hot part of the mantle less dense The material will slowly rise toward the crust

5 Convection Mantle material is cooled as it nears the crust This cooling causes the particles in the material to move slower and closer together The cooler material will slowly sink back toward the outer core

6 Convection

7 Convection Convection is a flow of a fluid or air due to heating and cooling IE: Hot air rises. Cold air falls.

8 This material is magma and occurs in the Earth’s mantles asthenosphere
Convection Current Convection Currents movement within a fluid by heat energy causing them to move in a circular fashion, This material is magma and occurs in the Earth’s mantles asthenosphere

9 Uses of Convection Hot air balloons

10 Uses of convections Boiling water

11 Uses of convection Heating and cooling homes

12 Uses of Convection Weather

13 Convection Currents and Plate Tectonics

14 Animation of Plate movement
convection currents experiment - YouTube

15 Compression – pushing together
Forces within the Earth caused by convection currents Convection Currents in asthenosphere Meeting This creates a CONVERGENT plate boundary

16 Forces within the Earth caused by convection currents
Convection currents In asthenosphere Moving away Creates a DIVERGENT Plate boundary

17 Shearing - moving side-by-side
Forces within the Earth caused by convection currents Convection currents In asthenosphere Side by side create a TRANSFORM plate boundary


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