| Question | Answer |
|---|---|
| What are the three properties of air? | air has mass air takes up space Air exerts pressure |
| What gases make up air? | nitrogen, oxygen, water vapor and carbon dioxide |
| What gas makes up most of the air? | nitrogen |
| What is the blanket of air called that surrounds the earth? | atmosphere |
| What layer of the atmosphere contains all the weather? | tropposphere |
| Airplanes fly in what layer of the atmosphere? | stratosphere |
| What instrument measures air pressure? | barometer |
| If the barometer is rising, what is happening to the weather? | Cool and dry |
| If the barometer is falling, what is happening to the weather? | moist and warm air, possible rain |
| What is a large body of air that has similar temperature and moisture? | air mass |
| What do you call the boundary where two air masses meet? | a front |
| What kind of front has a cold air mass that pushes under a warm air mass? | a cold front |
| What kind of front has a warm air mass that covers a cold air mass? | a warm front |
| What kind of front has little movement and neither cold or warm fronts take over? | a stationary front |
| What kind of weather follows a warm front? | long periods of light rain or snow |
| What kind of weather can happen with a cold front? | A thunderstorm, followed by cooler and dryer weather |
| What type of storm has rapidly circling tubes of air that can form severe thunderstorms? | A tornado |
| What do you call a tornado that is up in the clouds and hasn't touched down on the ground? | A funnel cloud |
| What type of storm occurs when warm moist air along front is pushed up suddenly by cold dry air? | A thunderstorm |
| During a thunderstorm what do you call the flashes of light and the loud claps of noise? | lightning and thunder |
| What type of storm is violent and forms over a warm ocean? | Hurricane |
| What is the area of a hurricane that is calm and mainly located in the center called? | the eye |
| What does a hurricane need for its energy source? | warm ocean |
| Which property of air explains why another object and air cannot be in the same space? | air takes up space |
| Which property of air explains why air is matter and weighs something? | air has mass |
| Which property of air makes it possible for air to move things? | air exerts pressure |
| What do you call the area in the United States where most of the tornadoes occur? | tornado alley |
