Air Masses
Fronts
Definitions
Severe Weather
Air Pressure
100
West to East.
Which way does the weather generally move in the United States?
100
The front brings cold temperature. It also brings heavy precipitation for a short period of time.
What do cold fronts bring?
100
The condition of the atmosphere at a certain place or time.
What is weather?
100
The Eye
What is the calm point in a hurricane?
100
At sea level.
Where is the air pressure the highest?
200
5 air masses.
How many different types of air masses are in the United States?
200
It is formed when a moist warm air mass slides up and over a cold air mass. It brings light precipitation for a long period of time. Followed by warmer milder weather.
What is a warm front and what weather does it bring?
200
It is a "giant bubble" of air with the same temperature and humidity.
What is a air mass?
200
A hurricane is on water and a hurricane is on land
What is the difference between a tornado and hurricane
200
A giant L on a weather map.
What is the symbol for low pressure?
300
The Continental Arctic.
What is the coldest air mass?
300
It forms when warm and cold air meet and neither air mass has the force to move the other. They remain stationary. This front brings clouds and fog, and it could rain or snow. Can bring many days of clouds and precipitation.
What is a stationary front and what weather does it bring?
300
Less than normal amount of rain and snow over a period of time.
What are droughts?
300
It forms when air masses at the ground is much warmer and more humid than air above
How is lighting formed?
300
A giant H on a weather map.
What is symbol for high pressure?
400
They are the Maritime Polar, Maritime Tropical, Continental Arctic, Continental Tropical, and Continental Polar.
What are the five types of air masses in the United States of America?
400
It brings warmer, milder weather.
What type of weather comes after a warm front passes over?
400
They are a leading edge of a moving air mass.
What are fronts?
400
1) when cold air over land runs into a mass of warm air, the warm air is forced up violently 2) At the same time, cooler, denser, air flows in from the side and twists the rising warm air 3) A spinning funnel cloud forms that "sucks up" everything in its path like a gigantic vacuum cleaner
How are tornadoes formed?
400
At the top of a mountain.
Where is the air pressure the lowest?
500
Maritime Polar- cold and moist Maritime Tropical- warm and moist Continental Arctic- extremely cold and dry Continental Tropical- hot and dry Continental Polar- cold and dry
What weather do the five air masses in the United States bring?
500
Cold front: When a cold air mass pushes under a warm air mass, forcing the warm air to rise. Warm front: When a moist, warm air mass slides up and over a cold air mass. Stationary front:When warm and cold air meet and neither air mass has the force to move the other.
How are the three types of fronts formed?
500
Out of the ordinary, extreme weather conditions.
What is severe weather?
500
1) warm ocean water provides energy 2) strong surface winds at the base of the hurricane blow into areas of low pressure 3) warm moist air spirals up around the eye 4) circular wall of clouds with heavy rains and strong winds develop around the eye as warm air moves up, it spreads out 5) in the eye the air sinks slowly and the winds are light and there are no clouds
How are hurricanes formed?
500
Clockwise.
Which way does high pressure turn?
M
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