Transcript Chapter 6 Lesson 2 WIND What is Wind?

Chapter 6 Lesson 2
What is Wind?
• Air moves from
areas of high
pressure to areas of
low pressure.
• Trade Winds – winds
that blow between
30 degrees N and 30
degrees S latitude
• Latitude – measure
of how far north or
south a place is from
the equator
• Global Wind – blows
steadily over long
distances in a
predictable direction
• Coriolis Effect –
describes the change
in the direction of
something on or
above the Earth’s
surface due to the
Earth’s rotation.
• Dense – packed
with particles –
• Warm air is less dense
than cold air – this is
why cold air sinks and
warm air rises
Local Winds
• Sea Breeze –
movement of air
from water to the
land (day)
• Valley Breeze –
cool air moves up out
of the valley to
replace the rising
warm air (morning)
• Land Breeze –
movement of air
from the land to
the water (night)
• Mountain Breeze
– warm air rises out of
the valley and cool air
from the mountain
flows down into the
valley (evening)
Drew Brees
New Orleans Saints
Quarterback
Measuring
Wind
• Weather
Vane –
instrument that shows
the way the wind is
blowing
• Anemometer –
instrument that
measures the speed
of the wind