Weather Variables
Warm Air vs Cool Air
High & Low Pressure
What Causes Wind?
Real World Weather
100
The variable that tells us how hot or cold the air is.
What is temperature?
100
This type of air rises because it is lighter and less dense.
What is warm air?
100
This type of pressure is usually linked to sinking air and clear skies.
What is high pressure?
100
Wind is caused when air moves from this pressure area to another type of pressure area.
What is from high pressure to low pressure?
100
On a hot day, warm air rises over a parking lot while cooler air from a grassy field moves in. What does this movement create?
What is wind?
200
This variable measures how much water vapor is in the air.
What is humidity?
200
This type of air sinks because it is heavier and more dense.
What is cool air?
200
This type of pressure is linked to rising air, clouds, and rainy weather.
What is low pressure?
200
This uneven natural process is the main reason pressure differences form on Earth’s surface.
What is the sun's heating of Earth's surfaces?
200
If a weather map shows a large blue “H” symbol over your region, you can expect this type of weather. 
What is clear or calm weather?
300
This variable is the weight of the air pressing down on Earth.
What is air pressure?
300
When warm air rises, this type of pressure is created at the surface.
What is low pressure?
300
Air always moves from this type of pressure area toward the other type.
What is high pressure to low pressure?
300
Warm air rises and cool air sinks, creating this type of cycle that helps drive wind.
What is convection?
300
If humid air rises and cools quickly in your area, you might see these start to form.
What are clouds?
400
This variable describes air moving from high pressure to low pressure.
What is wind?
400
When cool air sinks, this type of pressure forms at the surface.
What is high pressure?
400
When air sinks in a high-pressure area, clouds usually do this.
What is disappear (or clear out)?
400
When one area is heated more than another, this weather variable changes and helps generate wind.
What is air pressure?
400
You feel a sudden strong gust of wind before a storm arrives. This gust is caused by a sharp change in ___ _______?
What is air pressure?
500
This variable includes rain, snow, sleet, or hail falling from the sky.
What is precipitation?
500
This process happens when warm air rises and cool air sinks, driving many weather patterns.
What is convection?
500
This pressure condition often creates strong winds when the difference between two nearby areas is very large.
What is a steep pressure gradient?
500
______ ______ , when large, cause wind speeds to increase quickly and become stronger.
What are pressure gradients (pressure differences)?
500
A weather map shows a very large high-pressure system right next to a deep low-pressure system. What kind of wind should you expect?
What are strong or fast winds?