Chapter 1 Vocab

Edit Answers
123456789
Across
  1. 1. northwest a region of the U.S including the states of Washington,Oregon and Idaho
  2. 3. a length of time a volcano is inactive
  3. 5. movement when two giant plates of crust pull apart often on the ocean floor
  4. 8. movement when two plates of the earths crust collide producing sliding or slipping actions
  5. 9. of fire an area around the Pacific Ocean that has lots of volcano and earthquake activity
Down
  1. 2. movement when giant plates of crust meet and one is forced under the other
  2. 4. tectonics strong forces within the earth that move giant plates of crust
  3. 6. a geological formation that releases pressure from inside the earth
  4. 7. a crack in the earths crust that allows lava to erupt