science stuff word #1

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Across
  1. 4. hot hot water
  2. 6. 69 Degrees Fahrenheit
  3. 7. a flowing substance
  4. 8. water when it is cold outside
Down
  1. 1. a hard substance
  2. 2. amount of space an object has
  3. 3. my ice cream in a sunny day
  4. 5. air