Earth Science Lesson 4 Crossword

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  1. The cycling of hot and cold material
  2. Hot material rises because it is less _______
  3. This layer of the Earth is the hottest
  4. Convection occurs in this layer of the Earth
  5. The plates and the _________ are the same thing
  6. Silly putty can be a good model for this type of rock
  7. This is the current, widely accepted theory of how the Earth is changing
  8. This is the old theory of how the Earth changes
  9. This person came up with the idea that continents drift across the ocean floor
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