Plate Tectonics puzzle

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Across
  1. 3. What are tectonic plates made of?
  2. 6. What is the smallest tectonic plate?
  3. 8. How many major tectonic plates are there?
  4. 12. Who created the continental drift theory?
  5. 13. What happens to the earth’s geography because of plate tectonics?
  6. 14. What do tectonic plates make when they come together?
  7. 18. What happens at a convergent plate boundary when an oceanic plate collides with a continental plate?
  8. 19. Boundary when tectonic plates move apart?
  9. 20. Scientists use what to measure the tectonic plates?
Down
  1. 1. What happens to the continental crust when two continents collide?
  2. 2. Boundary when moving sideways in relation to one another?
  3. 4. What type of boundary is it when the tectonic plates move into one another?
  4. 5. What is the super continent called?
  5. 7. What are tectonic plates produced by?
  6. 9. A tectonic belt of earthquakes and volcanoes in the Pacific Ocean is known as what?
  7. 10. what is the biggest plate?
  8. 11. A collision between the African plate and the Arabian plates formed what sea?
  9. 15. Who discredited/opposed continental drifting?
  10. 16. Where do earthquakes happen at plate boundaries?
  11. 17. What is a tectonic plate from?