A.________-large body of air that develops over a particular region; it acquires the characteristics of the area over which it occurs

B.__________-boundary between different air masses
1.___-cold air mass pushes under a warm air mass and can cause a narrow band of violent storms; tempuratures drop
2.___-warm air mass slides up over a cool air mass; widespread precipitation develops
3.___-warm air mass and cold air mass meet but never advances; couldiness and precipitation result
4.___-fast-moving cold front overtakes a slower-moving warm front or vice versa; cloudy weather with precipitation

C. Centers of ______
1.___ pressure- air sinks and spreads away from the high-pressure center; moisture cannot rise and condense; usually dry with a few clouds
2.___ pressure- air rises and cools forming clouds and precipitation

I was absent the day everyone else learned all this, that's why I need help. -_-"

Since this is not my area of expertise, I searched Google under the key words "air masses" to get these possible sources:

http://en.wikipedia.org/wiki/Air_mass
http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/af/home.rxml
http://www.usatoday.com/weather/tg/wamsorce/wamsorce.htm
http://www.physicalgeography.net/fundamentals/7r.html
http://cimss.ssec.wisc.edu/wxwise/class/frntmass.html

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.

I hope this helps. Thanks for asking.

hey i have the same sheet as you, wow

A. high-pressure system - a large body of air that develops over a particular region; it acquires the characteristics of the area over which it occurs

B. front - boundary between different air masses
1. cold front - cold air mass pushes under a warm air mass and can cause a narrow band of violent storms; temperatures drop
2. warm front - warm air mass slides up over a cool air mass; widespread precipitation develops
3. stationary front - warm air mass and cold air mass meet but never advances; cloudiness and precipitation result
4. occluded front - fast-moving cold front overtakes a slower-moving warm front or vice versa; cloudy weather with precipitation

C. Centers of pressure
1. high-pressure system - air sinks and spreads away from the high-pressure center; moisture cannot rise and condense; usually dry with a few clouds
2. low-pressure system - air rises and cools forming clouds and precipitation

A. The term you are looking for is "air mass." An air mass is a large body of air that develops over a particular region and acquires the characteristics of the area over which it occurs.

B. The terms you are looking for are different types of fronts, which are boundaries between different air masses.

1. A "cold front" occurs when a cold air mass pushes under a warm air mass, usually causing a narrow band of violent storms as the warm air is rapidly lifted and cooled. Temperature drops behind the cold front.

2. A "warm front" occurs when a warm air mass slides up over a cooler air mass. The upward movement of the warm air leads to the formation of widespread precipitation. As the warm front passes, there is a gradual increase in temperature.

3. "Stationary fronts" occur when a warm air mass and a cold air mass meet but neither advances. The result is often cloudiness and precipitation along the boundary.

4. An "occluded front" occurs when a fast-moving cold front overtakes a slower-moving warm front or vice versa. This creates cloudy weather with precipitation.

C. The terms you are referring to are the centers of pressure systems.

1. A "high-pressure center" is an area where air sinks and spreads away from the center. This causes the air to compress and warm up, making it difficult for moisture to rise and condense. High-pressure centers are usually associated with dry weather and a few clouds.

2. A "low-pressure center" is an area where air rises and cools, leading to cloud formation and precipitation. Low-pressure centers are often associated with stormy weather.

To learn more about these concepts and gain a better understanding, I would recommend reading your textbook, consulting class notes, or researching online. Understanding the basics of air masses, fronts, and pressure systems will help you grasp meteorology concepts more effectively.