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The Rock Cycle

The Rock Cycle. Tuesday October 18, 2011. The Rock Cycle. Volcanoes “give birth” to new IGNEOUS rock. Igneous rock is formed through the cooling and solidification of magma or lava. The Rock Cycle. The forces of WEATHERING break the rock apart and turn it into SEDIMENT. The Rock Cycle.

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The Rock Cycle

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  1. The Rock Cycle Tuesday October 18, 2011

  2. The Rock Cycle • Volcanoes “give birth” to new IGNEOUS rock. Igneous rock is formed through the cooling and solidification of magma or lava.

  3. The Rock Cycle • The forces of WEATHERING break the rock apart and turn it into SEDIMENT.

  4. The Rock Cycle • The forces of EROSION pull the broken rock down towards the ocean floors.

  5. The Rock Cycle • Sediment builds up on the ocean floors and becomes SEDIMENTARY rock.

  6. The Rock Cycle • PLATE TECTONICS either • a.) crumple the flat sedimentary upwards into mountains, turning it into METAMORPHIC rock in the process; or • b.) push sedimentary rock back down into the mantle, where it is melted and become MAGMA again.

  7. Weathering and EROSION

  8. Weathering and Erosion • Weathering = the breaking a part of rock into smaller fragments, called SEDIMENT • Erosion = the transportation of sediment by WATER, WIND and GRAVITY downwards toward the ocean floors.

  9. Weathering and Erosion • Forces of Weathering: • Water moving along the surface: ABRADES rock in streams and river

  10. Weathering and Erosion 2. Water moving underground: DISSOLVES rock through chemical process

  11. Weathering and Erosion 3. Ice: Cracks rock a part because water expands when it freezes.

  12. Weathering and Erosion 4. Glaciers: TEARS rock away as it moves along.

  13. Weathering and Erosion 5. Plants: CRACKS rock a part because roots grow larger in cracks.

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