W3 work

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Across
  1. 1. the whole mass of air that surrounds the Earth
  2. 4. a scale of temperature on which water freezes at 0° and boils at 100° under standard conditions.
  3. 8. the action of one object coming forcibly into contact with another.
  4. 9. directly above the mesosphere and below the exosphere.
  5. 10. a chemical element with the symbol C and atomic number 6
Down
  1. 2. above the stratosphere and below the thermosphere
  2. 3. energy that comes from a source and travels through space at the speed of light.
  3. 4. the average weather in a given area over a longer period of time.
  4. 5. he degree or intensity of heat present in a substance or object
  5. 6. the process of turning from liquid into vapour.
  6. 7. a diagram showing the relation between variable quantities