Glossary of Science Explorer, Weather and Climate, Ch.2, Sec4
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The process by which water molecules in liquid water escape into the air as water vapor.
What is humidity?
A measure of the amount of water vapor in the air.
What is relative humidity?
The percentage of water vapor in the air compared to the maximum amount the air could hold.
- Relative humidity is measured by what?
What is condensation?
The process by which molecules of water vapor become liquid water.
- What is dew point?
The temperature at which condensation begins.
- When do clouds form?
When the water vapor in the air becomes liquid water or ice crystals.
- Name the three main classifications (types) of clouds.
- Name two characteristics used to classify clouds.
1. their shape
2. their altitude
- Describe "cumulus" clouds.
They look like fluffy, rounded piles (heaps) of cotton. They form less than 2 kilometers above ground but may grow to 18 kilometers high.
- Describe "stratus" clouds.
They look like flat (spread out) layers. They usually cover all or most of the sky.
- Discribe "cirrus" clouds?
They look wispy, feathery. They are made mostly of ice crystals and form only at high altitudes and low temperatures.
- What does the prefix "alto" mean?
The prefix "alto" means MIDDLE.
(Picture of an altocumulus cloud)
Name the three parts of the water cycle
- What does the prefix/suffix "nimbo- or -nimbus" mean (refer to)?
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