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convectioncurrent

Explore the movement in the layers of the Earth, particularly in the mantle, driven by convection resulting from changes in heat and density. Understand how more dense materials sink while less dense materials rise, leading to convection currents that impact activities like heating homes and even weather patterns.

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convectioncurrent

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

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

  3. 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 slowerand 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. 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 http://www.windows2universe.org/earth/interior/how_plates_move.html

  14. Animation of Plate movement • convection currents experiment - YouTube • http://www.absorblearning.com/media/attachment.action?quick=12p&att=2775 • http://education.sdsc.edu/optiputer/flash/convection.htm http://safeshare.tv/w/BmQVFPAdFm

  15. Forces within the Earth caused by convection currents Compression – pushing together 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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