On a weather map, these are two types of pressure systems and their symbols.
Low Pressure - Red L
High Pressure - Blue H
100
This is the by-product of the earth's rotation which adds acceleration and direction to any moving object including wind.
the Coriolis Effect
200
Where does weather occur in the atmosphere?
the troposphere (layer closest to Earth's surface)
200
Pressure always moves in this direction. What does this movement cause?
From high pressure to low pressure. This movement causes wind.
200
A boundary between 2 air masses, one cold and one warm, where the cold air moves the warm.
A Cold Front
200
Draw the symbol for a cold front. What color will it appear on a weather map?
line with red half circles attached to it
200
Lines representing equal barometric pressure
Isobars
300
Explain what drives weather.
The sun and convection currents are responsible for weather
300
This type of pressure system is indicated by a clear, sunny day with cooler temperatures.
high pressure system
300
A boundary between 2 air masses, one cold and one warm, where warm air replaces the cold
A Warm Front
300
Draw the symbol for a cold front. What color will it appear on a weather map?
line with blue triangles coming off of it
300
How does air or water move within a convection current?
warm air/water rises and cold air/water sinks
400
This is a person who studies weather and makes predictions about weather.
A Meteorologist
400
Low pressure systems bring what type of weather and air masses?
bad weather and warmer air masses
400
This is what happens when a warm front and a cold front meet in the atmosphere and neither one is strong enough to move the other.
A Stationary Front
400
Draw a stationary front and describe how it will appear colorwise on a weather map.
a line with red half circles on one side and blue triangles on the other side
400
List the factors necessary to create a hurricane.
disturbance/thunderstorms from Africa, warm ocean water, low pressure system, wind, moisture in the air
500
What do we call a fast flowing, narrow air current? (Here in the United States, this air current generally brings warmer air into the country?
a Jet Stream
500
Explain how high and low pressure systems rotate in the Northern Hemisphere.
High Pressure - Clockwise
Low Pressure - Counterclockwise
500
This is the most complex weather situation and often results in a warm air mass to be surrounded by two cooler air masses. These masses mingle and mix and the weather turns cloudy, rainy, or snowy.
An Occluded Front
500
Draw the symbol for an occluded front. Explain why it has the color it has on a weather map.
line with purple triangles and half circles on the same side. It is purple because the warm and cold air kind of mix (blue and red make purple).
500
How do winds move within High and Low pressure systems in the Southern Hemisphere due to the Coriolis Effect?
High Pressure - Counterclockwise
Low Pressure - Clockwise