Transcript Winds
What causes winds?
Winds are caused by differences in
air pressure.
They move from areas of high
pressure to low pressure.
Differences in air pressure are caused
by unequal heating of the atmosphere.
Cool air has higher air pressure so it
flows underneath the warm, less dense
air.
A wind vane
measures wind
direction.
The name tells
where the wind
is coming from.
i.e. – north
wind blows
from the north
to the south.
An
anemometer
measures wind
speed.
The wind-chill factor is the increased
cooling that a wind can bring.
Winds that blow over short distances
and are caused by unequal heating of
Earth’s surface within a small area.
Sea and land
breezes over a
large region that
change direction
with the season.