Science Vocab

2. Wispy, feathery clouds made of ice crystals that form at high levels.
4. Fluffy, white clouds, usually with flat bottoms, that look like rounded piles of cotton.
7. Located near the poles, winds that blow from East to West between 60 and 90 degrees latitude in both hemispheres.
8. A line on a weather map that joins places that have the same air pressure
9. are grayish clouds that often cover the entire sky.
12. A boundary between air masses that don't move
14. root word meaning middle
15. Concentration of trace substances at a greater level than occurs in average air
16. Hot, dry air masses mostly in Southwest and northern Mexico
18. a weather system that usually brings stormy weather

1. Winds that mostly affect the weather in the US and are located between 30 and 60 degrees latitude.
2. Process by which, in a fluid being heated, the warmer part of the mass will rise and the cooler portions will sink.
3. brings clear skies and calm air
4. The change from a gas to a liquid
5. a cold, moist air mass that is formed over the ocean in polar areas
6. the movement of air caused by differences in air pressure
10. Cold dry air. Forms usually over northern Canada and Alaska.
11. winds that blow steadily from specific directions over long distances
13. The movement of air caused by cool air over the ocean moving toward the land.
17. Global winds that flow toward the equator, turning west as they go