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Weather Vocab- Peck
Peck- Weather Week 2 Vocab
18
Science
5th Grade
09/24/2011

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Term
Thunderstorm 
Definition
The most common severe storm, formed in cumulonimbus clouds
Term
Hurricane
Definition
A very large, swirling storm with very low pressure at the center
Term
humidity
Definition
 The amount of water vapor in the air.
Term
atmosphere
Definition
The blanket of gases that surrounds Earth. 
Term
air pressure
Definition
The force put on a given area by the weight of the air above it.
Term
storm surge
Definition
a great rise of the sea along a shore caused by low air pressure
Term
insolation
Definition
The amount of the Sun’s energy that reaches Earth at a given time and place. Insolation is short for incoming solar radiation. 
Term
troposphere
Definition
the layer of the atmosphere closest to Earth’s surface
Term
weather
Definition
What the lower atmosphere is like at any given place and time. 
Term
water cycle
Definition
the continuous movement of water between Earth’s surface and the air, changing from liquid to gas to liquid.
Term
water vapor
Definition
water in the form of a gas. 
Term
barometer
Definition
A device for measuring air pressure. 
Term
evaporation
Definition
The slow changing of a liquid into a gas. 
Term
condensation
Definition
The changing of a gas into a liquid. —condense v. 
Term
precipitation
Definition
Any form of water particles that falls from the atmosphere and reaches the ground. 
Term
runoff
Definition
Precipitation that flows across the land’s surface or falls into rivers and streams. 
Term
relative humidity
Definition
a comparison between how much water vapor is in the air and how much the air could hold at a given temperature if it were full, or saturated. 
Term
tornado
Definition
A violent, whirling wind that moves across the ground in a narrow path. 
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