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D - Science - Unit 7
Chapter - Water in the Atmosphere & Precipitation
| Question | Answer |
|---|---|
| What is the most common type of precipitation? | rain |
| What are the 5 types of precipitation? | rain, hail, snow, sleet and freezing rain |
| Which type of precipitation forms only inside cumulonimbus clouds during thunderstorms? | hail |
| How is powdery snow formed? | when snow falls through cold, dry air |
| How are the larger clumps of snow formed? | when snow falls through cold, humid air |
| How is sleet formed? | when raindrops fall through a layer of air that is below 0 degrees and freeze into solid ice particles |
| How is freezing rain formed? | when raindrops falling through cold air do not freeze in the air, but do when they touch a cold surface |
| What are the 3 main types of clouds? | cirrus, cumulus & stratus |
| Which type of clouds are wispy & feathery? | cirrus clouds |
| Where do cirrus clouds form? | form only at high levels, above 6 kilometers, where temperatures are very low |
| What are cirrus clouds made of? | ice crystals |
| Which type of clouds look like fluffy, rounded piles of cotton? | cumulus clouds |
| Where do cumulus clouds form? | form at less than 2 kilometers above the ground, but may grow in size and height until they extend up to 18 kilometers |
| What type of weather are cumulus clouds associated with? | sunny weather |
| How do stratus clouds form? | form in flat layers |
| Where are stratus clouds located? | low level and they cover all or most of the sky |
| What is the prefix used in the names of clouds that form between 2 and 6 kilometers? | alto-; (means high) |
| Where is fog most common? | in areas near bodies of water or low-lying marshy areas |
| How does fog form in mountainous areas? | forms as warm, moist air moves up the mountain slopes and cools |
| How is the quantity of water vapor in the atmosphere measured? | by the humidity |
| How do clouds form? | forms when water vapor in the air condenses to form liquid water or ice crystals |
| What 2 conditions are required for condensation? | cooling of the air and the presence of particles in the air |
| What happens if the dew point is above freezing? | the water vapor forms water droplets |
| What happens if the dew point is below freezing? | the water vapor may change directly into ice crystals |
Created by:
lprinke
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