Air typically moves in what direction over the United States?
What is west to east?
100
This is a large body of air with similar properties all through it.
What is an air mass?
100
This is used to measure wind speed.
What is an anemometer?
100
This tool is used to measure air pressure.
What is barometer?
100
This is the average of weather conditions over a long time, usually 30 years.
What is climate?
200
Cool air is _______ than warm air (heavier, lighter).
What is heavier.
200
This is a boundary between two air masses.
What is a front.
200
This means that a storm has already formed.
What is a storm warning?
200
On a weather map, the "L" stands for this.
What is an area of low air pressure?
200
Mountain ranges may have different climates than areas around them. At the top of the mountain, the air is _____________.
What is cooler.
300
What happens as you move from the troposphere to the stratosphere (increase in altitude)?
The air pressure decreases.
300
This air mass is dry and warm.
What is continental tropical air mass?
300
This is a column of wind lifted up on one end by upward winds and pressed down on the other end by downward winds.
What is a tornado?
300
Cold fronts bring ________ weather.
What is cooler weather?
300
This is one thing that scientists look at to learn about climates.
What are fossils?
400
As you go up through the five layers of the atmosphere, air pressure _____________?
What is decreases?
400
This causes precipitation at fronts.
What is warm air rising?
400
This is what hurricanes get their energy from.
What is warm ocean waters?
400
What kind of weather system is found in areas of low air pressure?
What is cloudy skies?
400
What can cause sudden climate change?
volcanic eruptions, asteriods, meteorite impacts
500
What forms when air temperatures are different?
What is a convection current.
500
This air mass has humid, warm air.
What is maritime tropical air mass?
500
List 2 things you need to do to prepare for a hurricane.
What is: board up windows, store food and water, have flashlights and battery powered radios available, and store valuables in containers off the ground.
500
Areas of high pressure that are away from fronts usually have what kind of weather?
What is clear skies?
500
The North Atlantic Drift and the Gulf Stream carry warm water northwards. How does this affect Europe's weather?