1
If an air mass is wet and warm what type is it?
Maritime Tropical
When air masses collide and they do not mix together well, what is caused?
A front
What are the two things air masses are classified by?
Temperature and Humidity (Moisture)
In the Northern Hemisphere, what direction do most tornadoes spin? (Clockwise or counter-clockwise)
Counter-clockwise
What comes first thunder or lightning?
Lightning because thunder is the sound of lightning.
If an air mass is wet and cool, what type is it?
Maritime Polar
What kind of front occurs when a cold air mass and warm air mass meet but neither can move the other?
Stationary front
What is an area of low pressure caused by rising warm air called?
Cyclone
What is the difference between a tornado and a funnel cloud?
A tornado touches the ground and a funnel cloud does not touch the ground.
What fuels hurricanes?
Warm water
If an air mass is dry and warm, what type is it?
Continental Tropical
What kind of front occurs when a fast moving warm air mass overtakes a slower moving cold air mass?
Warm front
What is an area of high pressure caused by sinking cool air called?
An anticyclone
What is a hurricane called when it occurs over the Indian Ocean?
Cyclone
What is lightning?
Lightning is static electricity inside a cumulonimbus cloud.
If an air mass is dry and cool, what type is it?
Continental Polar
What kind of front occurs when a warm air mass gets caught between two cold air masses.
Occluded front
How can you tell which direction a front is moving on a weather map?
The triangles and half circles on the front symbols point in the direction the front is moving.
What is a hurricane called when it occurs over the Eastern Pacific Ocean?
A typhoon
Why do most tornadoes occur in Tornado Alley?
The cool dry air from Canada meets the warm, moist air from the Gulf of Mexico.
What are the two types of air masses that are not present in North America?
Maritime Arctic and Continental Arctic
What kind of front occurs when a fast moving cold air mass overtakes a slower moving warm air mass?
Cold front
What are the two things that need to be present for a thunderstorm to form?
The air near the surface of Earth needs to be warm and moist, and the atmosphere needs to be unstable.
Where do hurricanes form?
Hurricanes form over the warm waters near the equator.
What are the 3 factors that must be present in order for a snowstorm to be categorized as a blizzard?
When wind is over 35mph, visibility is less than .25 of a mile, and it lasts longer than 3 hours.