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15 Cards in this Set
- Front
- Back
Name 5 types of precipitation.
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1. rain
2. sleet 3. freezing rain 4. hail 5. snow |
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What is rain?
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Rain is the most common kind of precipitation. Raindrops must be at least 0.5 millimeters in diameter.
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How large must drops of rain be?
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Drops of water must be atleast 0.5 millimeters in diameter. (Note for scale: 0.5 millimeter = 2/100 inch, do not need to know inches)
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What is sleet?
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Ice particles smaller than 5 millimeters in diameter. (A form of precipitation.)
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What is freezing rain?
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Rain that freezes when it touches the ground.
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What is hail?
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Round pellets of ice larger than 5 millimeters. (A form of precipitation.)
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What is snow?
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Water vapor (in a cloud) converted directly into ice crystals.
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How many sides or branches does every snowflake have?
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Every snowflake has six sides.
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What is used to measure the amount of rain that falls?
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A rain guage
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Name the 2 ways snowfall can be measured?
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1. A ruler (pushed into the snow on the ground).
2. Melting the collected snow and measuring the depth of water it produces. |
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What is a drought?
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A long period of unusually low precipitation.
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What is cloud seeding?
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A method of producing rain from clouds by sprinkling dry ice or silver iodide from planes into the clouds.
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What is precipitation?
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Any form of water that falls from clouds and reaches the Earth's surface.
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What must hapen for water droplets or ice crystals to fall to Earth?
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They must grow heavy enough to fall through the air.
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What 3 factors are needed for precipitation to occur?
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There must be:
1. water vapor 2. cold temperatures (dew point must be reached) 3. presence of particals |