Air Pressure
Do the molecules in warm air rise or sink?
Rise
How does the jet stream affect the weather?
The jet stream transports weather systems that affect us.
When a cold front is approaching, what happens?
warm air rises, cools, and causes rain and thunderstorms
Which of the following is an effect of a thunderstorm?
Heavy rains that cause flooding, lightning that can cause fires, and strong winds that can blow over power lines or trees.
Where do most tornadoes happen?
Tornado alley in the US
What is altitude?
The distance above sea level
What is the jet stream?
Strong winds above Earths surface
When a warm front is approaching, what happens?
advancing warm air pushes up and over retreating cold air causing warm temperatures and mild rain
During _____________ stay inside if possible, stay out of the water, and do not stand under trees.
Thunderstorms
how high can winds reach in a tornado?
300 mph
What device measures air pressure?
A Barometer
What flows does the Jet Stream have?
West to East
major difference between fronts is that
in cold fronts, air masses are moving in different directions
Standing near a tree is the safest thing to do during a lightning storm. True or False?
False
What is a tornado?
A spinning cloud shaped like a funnel
At the bottom of a Mountain
On a given day, which most affects the amount of rainfall an area is expected to receive?
A Jet Stream
The symbol on a weather map for a cold front is what?
a line with semi-circles on it
During this type of severe weather, hail may also form.
thunderstorm
How can you stay safe in a tornado?
find shelter, like a basement, or room without windows
Decreases
Which best describes how winds in the jet stream blow?
between a boundary of cold air and a boundary of warm air
f an air mass is sinking, it must be
cold and more dense
What should you do if caught outside during an electrical storm?
Stay away from isolated trees, towers, and utility poles.
How does a tornado begin?