1. Weather

2. How do patterns in the atmosphere affect our weather?

3. Weather The state of the atmosphere at a certain time and place (includes temperature, moisture, wind and pressure)..

4. Climate Typical weather patterns for a specific region of earth.

5. Atmosphere The gaseous matter that surrounds earth.

6. Troposphere The layer of the atmosphere closest to earth’s surface. The layer where weather occurs.

7. Air pressure The weight of the air pressing down on earth.

8. Cold Front The leading section of a cold air mass moving against and replacing a warm air mass.

9. Warm front The leading section of a warm air mass that rises above a cold air mass.

10. Precipitation Any form of water falling to earth’s surface

11. Humidity A measure of the amount of water vapor in the air.

12. Windward On the side exposed to the wind

13. Leeward On the side protected from the wind.

14. Tornado A rotating column of air. Usually accompanied by a funnel shaped cloud.

15. Vortex Spiral movement within a liquid or gas.

16. Hurricane A rotating air mass originating over water that creates a large storm and high winds.

17. Wind The movement of air from a specific direction.

18. Stationary Front The boundary between two different air masses that aren’t moving.

19. Poleward Movement towards the pole of a planet.

20. Stratus A low altitude, horizontal, grey cloud formation.

21. Cirrus A high altitude, narrow, white, fleecy cloud formation.

22. Cumulus A dense, white, fluffy, flat-based cloud formation.