Atmosphere Flashcards
Air pressure is the _____ of the ____ of a column of ___ pushing down on an area
Result, weight, air
The atmosphere is_______
Heavy
Closer to earth=______
More air pressure
Farther from earth=______
Less air pressure
Example of the closer to earth you are, the more air pressure
A stack of books
Heat is a major______ in our weather
Factor
Heat that is in weather comes from
The sun
Air temperature is measured using a
Thermometer
Thermometers work because
Liquids expand when heated, and shrink when cooled
The earth is heated by________
The suns rays
The air above the earth is warmed by
Earths surface
Warmer air rises=_____
Low pressure
Cool air sinks
High pressure
Wind=
Horizontal movement of air from an area of high pressure to an area of low pressure
Winds are caused by
Differences in air pressure
Global winds blow from a
Specific direction over long distances
Warm air rises at the ____ and cold air sinks at the ____
Equator, poles
Air blows from the _______ toward the _____ and from the _____ to the ______
Equator,poles,poles,equator
What is it called when air blows from the equator to the poles and from the poles to the equator?
Convection current
Because of earths rotation
Global winds do not blow straight up and down from the equator to the poles and back
Winds are_____
Curved
In the northern hemisphere, wind…..
Turns toward the right
In the Southern Hemisphere, wind…..
Turns toward the left
The Coriolis effect is
The way earths rotation makes wind curve
The _____ effect and other ______ combine to produce areas of ____ winds
Coriolis factors calm
The doldrums are
Near the equator where the wind doesn’t blow.
What did sailors do about the doldrums? And why
The avoided it so they wouldn’t be stranded
The Coriolis effect causes
Jet stream
Jet stream is located
10 km above earths surface
What are jet streams
Bands of high speed winds
In which direction do jet streams blow
W to E
In which way does jet streams move
N and S in a wavy path
The Coriolis effect also causes
The preceding westerlies and the polar easterlies
What two things play an important role in weather
Prevailing westerlies and polar easterlies
Where does the prevailing westerlies and polar easterlies meet?
Polar front
The ____ of __ and __ air along the polar front has a major effect on weather.
Mixing warm cold
