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