Plate Motion 1

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Across
  1. 3. an object, diagram, or computer program that helps us understand something by making it simpler or easier to see
  2. 4. the outside or top layer of something
  3. 6. the slow pulling apart of land that is caused by plate movement
  4. 8. a long, deep indentation in the ocean floor formed when two plates move together volcanic activity: any of the many processes (such as eruptions and lava flows) in which gas, lava, and ash are pushed out on the surface of Earth
  5. 11. an extinct reptile that lived about 300 million years ago
  6. 12. one of the very large sections of hard, solid rock that make up Earth’s outer layer
  7. 15. boundary the place where two plates meet
  8. 16. the layer of soft, solid rock underneath Earth’s plates
  9. 17. layer Earth’s outermost layer of hard, solid rock that is underneath the soil, vegetation, and water
  10. 20. to examine in detail for a purpose
  11. 23. hot liquid rock below the surface of Earth
  12. 24. the sudden pushing out of something, such as lava from a volcano
Down
  1. 1. moving toward the same place
  2. 2. evidence of life from the past, such as fossilized bones, footprints, or leaf prints
  3. 5. something we observe to be similar over and over again
  4. 7. a diagram that shows what the inside of something looks like
  5. 9. a set of interacting parts forming a complex whole
  6. 10. any of Earth’s main continuous areas of land, such as Africa, Asia, and North America
  7. 13. hot liquid rock on the surface of Earth
  8. 14. a natural spring that sends hot water and steam suddenly into the air from a hole in the ground
  9. 16. an underwater mountain range formed when two plates move apart
  10. 18. a sudden shaking of Earth’s surface
  11. 19. moving apart in different directions
  12. 21. a feature that forms on the surface of a planet, such as a mountain, channel, or sand dune
  13. 22. how often or fast something happens