Chapter 7, Lesson 1- Earth's Changing Crust
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Chapter 7, Lesson 1- Earth's Changing Crust

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Chapter 7, Lesson 1- Earth's Changing Crust Chapter 7, Lesson 1- Earth's Changing Crust Presentation Transcript

  • Chapter 7, Lesson 1Earth’s Changing Crust fault geologist magma lava weathering erosion deposition surveyor elevation seismograph tension compression shear
  • fault – a crack in the Earth’s crust
  • geologist – scientists who study Earth
  • magma – hot, molten rockbeneath the earth’s surface
  • lava – magma that reaches the earth’s surface
  • weathering – the breaking down of the materials of the earth’s crustClick on this picture to exploredifferent types of weathering.
  • erosion – is the picking up and carrying away of weathered pieces of earth
  • deposition – the dropping of bits of rock
  • surveyor – people who measure the earth
  • elevation – the height of land above sea level
  • seismograph – a device used tomeasure vibrations of the Earth’s crust
  • tension – stretches or pulls the Earth’s crust apart
  • compression – squeezes orpushed the Earth’s crust together
  • shear – twists, tears, or pushes one part of the crust past another