Earth's layer's

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Across
  1. 3. the regions denser of the mantle
  2. 7. Mae's up 84% of earth's volume
  3. 8. causes the different layers of the earth
Down
  1. 1. is about the size of the Earth's core
  2. 2. the thinnest layet
  3. 4. CORE primarily made up of iron and nickel
  4. 5. CORE liquid layer of molten iron and nickel
  5. 6. LAYER the earth has different layers because of the process called differentiation
  6. 9. WAVES how scientists know the temperature of the core