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Science Test 3
Weather Conditions
| Question | Answer |
|---|---|
| What is the air that surrounds our planet? | atmosphere |
| What are air particles pressing down on a surface? | air pressure |
| What layer of the atmosphere is closest to Earth? | troposphere |
| What is the second layer of the atmosphere that is JUST above the weather? | stratosphere |
| What is the greenhouse effect? | Heat from the sun is trapped in the atmosphere to warm Earth. |
| What is an air mass? | A large body of air that has moisture and temperature similar to the place over which it formed. |
| What is formed when two air masses meet? | front |
| What is an instrument that measures air pressure? | barometer |
| What instrument measures humidity? | hygrometer |
| What is the amount of water vapor in the air? | humidity |
| Which clouds are thin, wispy, and located at high altitudes? | cirrus |
| Which clouds are dark, towering, and bring heavy rain? | cumulonimbus |
| Which clouds are thick, gray, and near Earth's surface? | stratus |
| Which clouds are puffy, white, and at middle altitudes? | cumulus |
| What are the FOUR layers that make up our atmosphere? | thermosphere, stratosphere, mesosphere, troposphere |
| What two properties describe air masses? | temperature and moisture |
| Most weather occurs in this layer of the atmosphere. | troposphere |
| Does warm air have high pressure or low pressure? | low pressure |
| The cloud type that usually brings heavy rain is called _____. | cumulonimbus |
| Where is air pressure highest? | near Earth's surface |
| What happens along fronts? | weather |
| Does cold air have high pressure or low pressure? | high pressure |