The atmosphere. ☁️ Flashcards
Air temperature is usually measured by using a ________________?
Thermometer
________ is a major factor in our weather.
Heat
Thermometers work because liquids __________ when they are heated, and __________ when they are cool.
Expand
Contract (shrink)
The earth is heated by the Suns_____?
Rays
The air above the earth is warmed by Earths _____________?
Surface
Warmer air rises= ___ pressure.
Low
Wind:
A horizontal movement of air from an area of high pressure to an area of low pressure.
Cooler air sinks= ____ pressure
High
Winds are caused by differences in ___ ________.
Air pressure
______ _____ blow from a specific direction over long distances.
Global Winds
____ air rises at the equator, ____ air sinks at the poles.
Warm
Cold
Air blows from the equator to the ____ and from the poles to the _______.
Poles
Equator
The Coriolis Effect:
Because of Earths rotation, global winds do not blow straight up and down from the equator to the poles and back.
Winds are ______.
Curved
Northern hemisphere winds turn towards the _____.
Right
Southern Hemisphere winds turn towards the ___.
Left
The Coriolis effect and other factors combine to produce areas of ____ winds.
Calm
Doldrums:
Near equator where wind does not blow.
The atmosphere is _________.
Heavy
Jet stream:
Bands of high wind speeds.
The jet stream normally blow from ____ to ____.
West to east
The jet stream travel around the earth moving _____ to _____ In a ____ pattern.
North and south
Wavy
___ ________ is the result of the weight of a column of air pushing down on an area.
Air pressure
More air pressure= ______ to earth.
Closer
Farther away from earth= ____ air pressure.
Less
The Coriolis effect causes the __________ _________ and the _____ ___________.
Prevailing westerlies
Polar easterlies
The prevailing westerlies and polar easterlies met at the _____ _____.
Polar front
The ______ of cold air and warm air along the polar front has a major effect on our weather.
Mixing
Air blowing from the equator toward the poles and from the poles to the equator is called a __________ _______.
Convection current
