Science Chapter 7 Vocabulary

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Across
  1. 2. the supercontinent
  2. 4. occurs when two plates move towards each other and collide
  3. 7. caused by the very hot material at the deepest part of the mantle rising, then cooling, sinking again, and then heating, rising and repeating the cycle over and over
  4. 8. where the plates of the lithosphere float, or slide a top, a thin, semi-solid layer in the upper mantle
  5. 11. the thick layer that surrounds the core and is made of hot but mostly solid material
  6. 12. Eurasian Plate, North American Plate, South American Plate, Pacific Plate, African Plate, Australian Plate, Antarctic Plate, and Indian Plate
  7. 13. thick plates made of andesite and granite that form continents and are less dense than oceanic plates
  8. 16. Juan De Fuco Plate, Nazca Plate, Philippine Plate, Caribbean Plate, Scotia Plate, Arabian Plate, and Cocos Plate
  9. 17. a layer of solid rock that surrounds the Earth's surface
Down
  1. 1. occurs when two plates move away from each other
  2. 3. topmost layer of the Earth made up of the crust and the solid portion of the upper mantle
  3. 5. scientific theory of explaining how plates move on Earth's surface
  4. 6. Earth's surface is broken into large pieces that move over the asthenosphere
  5. 9. liquid metal that surrounds the inner core
  6. 10. thin plates that are made of basalt that form the ocean floor and are denser than continental plates
  7. 14. occurs when two plates slide past each other
  8. 15. a sphere of hot, solid metal