Breezes
Rising Warm Air creates an area of what kind of pressure?
Low Pressure
Does cool air sinks or rises?
When cool air moves this causes what kind of pressure, high or low?
sinks
High pressure
Air will always flow from an area of what kind of pressure to what kind of pressure?
high to low
Winds blow towards what kind of pressure?
Winds blow away from what kind of pressure?
winds blow towards low pressure
winds blow away from high pressure
At the equator, is air is rising or falling?
Is this due to hot or cold air?
Is this low or high pressure?
air is rising because it is hot which causes low pressure
At the poles, is the air rising or falling?
Is this because the air is hot or cold?
Is this high or low pressure?
air is falling because it is cold which is high pressure
At about 30 degrees north and south, the warm rising air from the equator cools and begins to fall. When it reaches the earth it spreads out, and then begins to flow back to the equator.
What is this called?
Convection cell
Name the 3 types of convection cells
Hadley, Ferrell (Mid-Lattitude), Polar
Due to the earth's rotation, winds do not take a straight path. This is called what?
the Coriolis Effect
Because of the Coriolis Effect, winds in the North Hemisphere curve which way?
right
Winds blowing north toward the low in the Northern Hemisphere bend which way?
to the east
What causes differences in air pressure?
Since the earth is rotating, winds rotate. Winds blowing south in the Northern Hemisphere bend which way, east or west?
West
cyclones
There are 2 kinds of cyclones. What are they?
cyclones and anticyclones
Cyclones spiral in different directions depending if they are in the Northern Hemisphere or Southern Hemisphere. In the Northern Hemisphere, do cyclones spin counterclockwise or clockwise?
counterclock wise
There are 3 Global Winds that occur around the earth which are caused by the Coriolis Effect. Name them and say what latitudes they are in .
Trade Winds - 0-30 degrees
Polar Easterlies - 60-90 degree
Prevailing Westerlies 30- 60 degrees
There are 2 areas of calm that occur around the earth. Name them, and say where they are
Doldrums - equator
Horse Latitudes - 30North and 30 South
Cyclones spiral in different directions depending if they are in the Northern Hemisphere or Southern Hemisphere. In the Southern Hemisphere, do cyclones spin counterclockwise or clockwise?
clockwise
Cyclones that spiral away from highs are called Anticlones. They spin in different directions depending if they are in the Northern Hemisphere or Southern Hemisphere. In the Northern Hemisphere, do Anticyclones spin counterclockwise or clockwise?
clockwise
What are the differences between Mountain breezes and Valley breezes and when do they occur?
Mountain - cold air flows down the mountain at night
Valley - warm air flows up the side of the mountain during the day
There are high altitude winds in the upper and lower trophosphere. These winds are called what?
jet stream
Each hemisphere has 2 jet streams. What are they called
Subtropical jet stream
Polar jet Stream
Jet Streams are how thick? how long?
how high above the earth
how fast?
1-3 miles thick
1000 - 3000 miles long
4-8 miles above the earth
250 mph
We studied several kinds of Local Winds. Name 3 types of Local Winds and describe them.
Monsoon
Coastal Breezes (Sea and Land)
Forest
Baltic
Fall
Valley and Mountain