This instrument is used to determine wind direction.
What is a wind vane?
100
White, puffy clouds that look like piles of cotton; they are known as fair weather clouds.
What are cumulus clouds?
100
Where weather occurs.
What is the troposphere?
100
21% of the atmosphere is this gas.
What is oxygen?
100
An area where air masses meet and they do not mix.
What is a front?
200
This instrument is used to measure temperature.
What is a thermometer?
200
Clouds that form at the Earth's surface.
What is fog?
200
The ozone layer is found here.
What is the stratosphere?
200
The most abundant gas in the atmosphere.
What is nitrogen?
200
The amount of water vapor in the air.
What is humidity?
300
This instrument is used to measure air pressure.
What is a barometer?
300
Tall, dark clouds that mean thunderstorms with heavy rain and strong winds.
What are cumulonimbus clouds?
300
The hottest layer.
What is the thermosphere?
300
A gas that varies in the atmosphere depending on time, season, and location.
What is water vapor?
300
A "river" of air in the atmosphere that moves from west to east.
What is the jet stream?
400
This instrument is used to measure wind speed.
What is an anemometer?
400
Gray clouds that cover the lower part of the sky; rain or snow falls from these.
What are nimbostratus clouds?
400
Satellites orbit here.
What is the exosphere?
400
The gas which scientists have connected with global warming may make up only a tiny fraction of our atmosphere, but plants couldn't make food without it.
What is carbon dioxide?
400
The type of front that occurs when a warm and cold air mass meet, but neither moves; may bring many days of clouds and precipitation.
What is a stationary front?
500
This instrument is used to measure relative humidity.
What is a psychrometer?
500
Wispy, feathery clouds that appear high in the sky.
What are cirrus clouds?
500
Meteors burn up here.
What is the mesosphere?
500
The percentage of the atmosphere that is made up of nitrogen.
What is 78%?
500
The type of front that occurs when a warm air mass is caught between two cooler air masses; may cause clouds and precipitation.