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

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