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100
the amount that air presses on the earth.
What is air pressure?
100
an area where cool air is sinking
What is high pressure area?
100
a tool that shows wind direction.
What is a wind vane?
100
name three kinds of precipitation
What is hail, sleet, snow, rain.
100
Name four types of clouds.
What are cumulonimbus, cumulus, stratus, cirrus clouds?
200
The amount of water vapor in the air.
What is humidity?
200
an area where warm air is rising.
What is low-pressure area?
200
scientists use this to measure exact wind speed.
What is an anemometer?
200
a prediction of what the weather will be like.
What is a forecast?
200
These are the monster clouds. Rising air currents force fluffy clouds to swell and shoot upward, as much as 70,000 feet. When these clouds bump against the top of the troposphere, or the tropopause, they flatten out on top like tabletops.
What are cumulonimbus clouds?
300
rain, snow, and hail.
What is precipitation?
300
a large amount of air that has a certain temperature and humidity.
What is air mass?
300
Humidity in the air is measure by this.
What is a hygrometer?
300
a tool that measures precipitation.
What is a rain gauge?
300
These wispy tufts of clouds are thin and hang high up in the atmosphere where the air is extremely where the air is extremely cold.
What is cirrus clouds?
400
How is the air heated?
Sunlight heats the earth's surface, which heats the air above it.
400
a tool that measures air pressure.
What is barometer?
400
this person studies weather.
What is a meteorologist?
400
Has weather stations all over the United States.
What is the National Weather Service?
400
White fluffy clouds that form low in the atmosphere and look like marshmallows. They often mix with large patches of blue sky.
What are cumulus clouds?
500
Why is air pressure lower as you go high above the earth?
there is less air pressure high above the earth, because there is less air.
500
when two air masses meet at a line.
What is a front?
500
You walk outside and look up to find dome-shaped cumulus clouds. what type of weather would you predict for today?
fair weather
500
How does hail form?
Hail forms when water freezes and gets pushed back up into a cloud by high winds. A layer of ice is added, and it begins to fall, again and again the hail falls and is pushed back up. Each time, the hail gets larger until the wind can no longer hold it up, then it falls to the earth.
500
They hang low in the sky blanketing the day in dreary darkness. They form when cold, moist air close to the ground moves over a region.
What are stratus clouds?
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