Tectonic Plate Crossword

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Across
  1. 3. At the middle of oceans, there are long mountain ranges under the sea called
  2. 6. Slow movement of continents across the Earth's surface is called:
  3. 8. This pushes the older crust to the sides, making the ocean floor spread out:
Down
  1. 1. Cycle of ocean basins opening and closing is sometimes called:
  2. 2. Occurs when plates collide with each other
  3. 4. Occurs when plates slide creating a break in the earth's surface:
  4. 5. Occurs when plates move away from one another
  5. 7. all continents were once joined together in one big supercontinent called: