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100
Rain, snow, sleet, hail are all examples of this.
What is precipitation?
100
The condition of the atmosphere at a particular place and time.
What is weather?
100
The continuous movement of water from one "source" to another.
What is the water cycle?
100
A collection of millions of water droplets and/or ice crystals.
What is a cloud?
100
The process where liquid water gains energy and becomes gas (water vapor).
What is evaporation?
200
These are low to the ground, form in layers, block out the sun. They may bring light rain or snow.
What is a stratus cloud?
200
Low, puffy white, flat bottoms
What is a cumulus cloud?
200
The process where a gas (water vapor) loses energy and becomes liquid.
What is condensation?
200
Very tall, puffy, white on top, dark on bottom.
What is a cumulonimbus cloud?
200
Liquid or solid water falling from the clouds to the ground.
What is precipitation?
300
The process where plants release water into the air through their leaves.
What is transpiration?
300
These are storm clouds.
What are cumulonimbus clouds?
300
Fog is this at ground level.
What is a stratus cloud?
300
Water vapor in the air.
What is humidity?
300
High, feathery clouds.
What is a cirrus cloud?
400
The amount of water that air can hold compared to how much it is actually holding.
What is relative humidy?
400
When water moves across the Earth's surface and collects in streams, rivers, lakes, etc.
What is runoff?
400
This cloud usually indicates good weather.
What is a cumulus cloud?
400
Air is considered this when it can't hold any more water vapor.
What is saturated?
400
These clouds might indicate that bad weather is coming.
What is a cirrus cloud?
500
Sleet is also known as this.
What is freezing rain?
500
Hail only forms in this type of cloud.
What are cumulonimbus clouds?
500
Water vapor must have this to condense on before it will become a liquid.
What is a solid surface?
500
This is the most common form of precipitation.
What is rain?
500
The temperature at which air becomes saturated (it can't hold any more water vapor).
What is dew point?