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15 Cards in this Set
- Front
- Back
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evaporation
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The process by which water molecules in liquid water escape into the air as water vapor.
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What is humidity?
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A measure of the amount of water vapor in the air.
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What is relative humidity?
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The percentage of water vapor in the air compared to the maximum amount the air could hold.
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Relative humidity is measured by what?
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a psychrometer
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What is condensation?
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The process by which molecules of water vapor become liquid water.
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What is dew point?
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The temperature at which condensation begins.
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When do clouds form?
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When the water vapor in the air becomes liquid water or ice crystals.
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Name the three main classifications (types) of clouds.
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1. cumulus
2. stratus 3. cirrus |
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Name two characteristics used to classify clouds.
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1. their shape
2. their altitude |
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Describe "cumulus" clouds.
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They look like fluffy, rounded piles (heaps) of cotton. They form less than 2 kilometers above ground but may grow to 18 kilometers high.
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Describe "stratus" clouds.
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They look like flat (spread out) layers. They usually cover all or most of the sky.
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Discribe "cirrus" clouds?
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They look wispy, feathery. They are made mostly of ice crystals and form only at high altitudes and low temperatures.
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What does the prefix "alto" mean?
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The prefix "alto" means MIDDLE.
(Picture of an altocumulus cloud) |
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Name the three parts of the water cycle
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1. evaporation
2. condensation 3. precipitation |
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What does the prefix/suffix "nimbo- or -nimbus" mean (refer to)?
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precipitation
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