Across
- 4. when a liquid turns into a gas.
- 6. Humidity is the amount of water vapor in the air.
- 7. front- A cold front is seen as the transition zone where a cold air mass is replacing a warmer air mass.
- 11. an instrument for measuring and indicating temperature.
- 12. white ice crystals formed directly from the water vapor of the air.
- 13. Lightning is an electrical discharge caused by imbalances
Down
- 1. is liquid precipitation: water falling from the sky.
- 2. partly melted falling snow or hail
- 3. front- A warm front is the boundary between a mass of warm air and a retreating mass of cold air.
- 5. Wind is the movement of air, caused by the uneven heating of the Earth
- 8. a chemical element that constitutes 21percent of the Earth's atmosphere.
- 9. pellets of frozen rain which fall in showers from cumulonimbus clouds.
- 10. gas that is the most plentiful element in Earth's atmosphere.