Earth and Space

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Across
  1. 3. The thin and rocky outer layer of the Earth.
  2. 7. The unit for weight.
  3. 9. When our hemisphere tilts away from the sun, we are in...
  4. 10. Day and night is caused by the Earth...
  5. 11. These rocks are formed by heat and pressure.
  6. 13. The unit for mass.
  7. 15. Contains billions of stars.
Down
  1. 1. Gravity pulls us towards the centre of the ...
  2. 2. When we burn fossil fuels we release .... dioxide.
  3. 3. This astronomer came up with a heliocentric model of the universe.
  4. 4. Molten rock.
  5. 5. The value of gravity on Earth.
  6. 6. This type of rock is formed when sediment is compacted.
  7. 8. A large burning ball of gas.
  8. 12. Slow cooling magma forms these size crystals.
  9. 14. The layer of the Earth that can flow slowly.
  10. 16. Carbon dioxide dissolves in rainwater, making it....