Transcript WIND.SYSTEMS

The following are
covered from the
Utah State core in
this lesson:
Objective 2: Relate energy sources and transformation to
the effects on Earth systems.
1. Describe the effect of solar energy on the determination of
weather.
2. Explain how uneven heating at the equator and polar regions
creates atmospheric currents that move heat energy around Earth.
3. Describe the Coriolis effect and its role in global wind patterns.
4. Relate how weather patterns are the result of interactions among
air currents, and topography.
Wind is caused by uneven heating
of Earth and its atmosphere.
Wind is air moving from areas of
high pressure to areas of low
pressure.
Identify the areas that have warm and cold air.
Which area has the most dense air?
Cold Air
Warm Air
Which sides have high and low air pressures?
Cold Air
Dense Air
Warm Air
Less Dense Air
What is the rule for atmospheric pressure
reaching equilibrium?
Cold Air
Dense Air
High Air Pressure
Warm Air
Less Dense Air
Low Air Pressure
Which way will the air molecules begin to move?
Cold Air
Dense Air
High Air Pressure
Warm Air
Less Dense Air
Low Air Pressure
When will the air movement stop?
Cold Air
Dense Air
High Air Pressure
Warm Air
Less Dense Air
Low Air Pressure
The atmosphere is now at equlibrium.
The movement of air is called ____?
wind
Cold Air
Dense Air
High Air Pressure
Warm Air
Less Dense Air
Low Air Pressure
A
B
C
Which area
receives direct
sunlight (A, B,
or C)?
The poles
always receive
indirect
sunlight (light
hits at an
angle).
The equator
always
receives direct
sunlight.
Cold Air
Convection
Current
Convection
Current
Warm Air
Warm Air
Convection
Current
Convection
Current
Cold Air
Coriolis Effect:
Winds, and weather
patterns curve due to
Earth’s rotation.
CONVECTION CURRENT
DAYTIME
LP
WIND DIRECTION
SEA BREEZE
CONVECTION CURRENT
HP
CONVECTION CURRENT
NIGHTTIME
HP
WIND DIRECTION
LAND BREEZE
CONVECTION CURRENT
LP
Warm air rises upslope
during the daytime.
Cool air sinks downslope during the nighttime.
From what you have just learned about wind in
valleys, where should these firefighters approach
the fire and why?
When land is intensely hot, the wet monsoon
winds blow from the ocean onto the land
bringing rain.
When the sun is no longer shining directly over the
land, the air above the ocean has a lower air
pressure. Dry winds flow from the land out over
the ocean, bringing the dry season.