It is caused by 1Differences in temperature 2Differences in pressure WIND Wind is the movement of air It is caused by 1Differences in temperature 2Differences in pressure ID: 776536
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Slide1
Slide2Wind is the movement of air.It is caused by:1.Differences in temperature.2.Differences in pressure.
WIND
Wind is the
movement
of air.
It is caused by:
1.Differences in
temperature
.
2.Differences in
pressure
.
Slide3DIFFERENCES IN TEMPERATURE
1. Warm air rises.Warming air make the molecules move faster and spread out.This makes the air less dense.Less dense air is light and will rise.
DIFFERENCES IN TEMPERATURE
1. Warm air
rises
.
Warming air make the molecules move faster and spread out.
This makes the air
less dense
.
Less dense air is light and will rise.
Slide4Differences in Temperature
2. Cold air sinks.Cooling air makes the molecules move slower and group together.This makes the air more dense.More dense air will sink.
Differences in Temperature
2. Cold air
sinks.
Cooling air makes the molecules move slower and group together.
This makes the air
more dense.
More dense air will sink.
Slide5Balloon
Slide6Slide7HIGH PRESSURE AREA AND LOW PRESSURE AREA
Slide8DIFFERENCES IN PRESSURE
1. Rising air creates
low
pressure area
.
If air is lifted up, that means there is
L
ess air pushing down on Earth
. There will be more water vapor and higher rate of condensation and will result into a storm. It brings warm and rainy weather.
2. Sinking air creates
high
pressure area.
If air is sinking, then air is pushing down on the surface of Earth with a
H
igh amount of pressure
. This will bring cold and dry weather caused by the
anticyclonic
flow of wind
.
Slide9The Creation of Wind
1. Differences in temperature cause air to rise and sink all over Earth’s surface.2. Rising and sinking air creates high and low pressure.3. The atmosphere does NOT like UNBALANCED PRESSURE SOOOO…IT TRIES TO EQUAL OUT PRESSURE BY MOVING AIR FROM HIGH TO LOW PRESSURE.
The Creation of Wind
1. Differences in temperature cause air to rise and sink all over Earth’s surface.
2. Rising and sinking air creates high and low pressure.
3. The atmosphere does NOT like UNBALANCED PRESSURE SOOOO…
IT TRIES TO EQUAL OUT PRESSURE BY MOVING AIR FROM
HIGH TO LOW
PRESSURE.
Slide10Winds are created by …
1.
Heating
the air,
decreases
pressure (warm air rises creating a
low
pressure area).
2.
Cool
air rushes in to
replace
the
warm
air (cooler, denser, air produces
high
pressure).
3. As air goes from
high
pressure to
low
pressure,
winds
form.
4. Wind is a
horizontal
movement of air
.
Slide11Slide12Slide13Land and Sea Breezes
LAND & SEA BREEZES
Slide14SEA BREEZE… Air moves from the sea during the day.
Slide15Mr. Fetch’s Earth Science Classroom
Convection
Convection is the main way the atmosphere is heated.
Slide16The Rule:
triangles and bumps
always point in the
direction the front
is moving
Slide17Land BREEZE… air moves from the land at night.
Slide18FRONT
When two different air masses come into contact, they don’t mix. They push against each other along a line called a front
Slide19a cold front moving south
an occluded front
a stationary front with cold air on the south side
a warm front moving north
a stationary front with warm air on the south side
Slide20Slide21Cold Fronts
Animation #1
Images
Slide22Slide23COLD FRONT
When a cold air mass catches up a warm air mass, the cold air slides under the warm air and pushes it upward, as it rises, the warm air cools rapidly.
Slide24Cumulonimbus clouds often associated with heavy precipitation and storm.
Slide25Slide26Slide27Slide28Warm Fronts
Animation #1
Images
Slide29WARM FRONT
When a warm air mass meets a cold air mass, the warm air rises since it is lighter, at high altitude, it cools and the water vapor contained condenses.
Slide30Slide31Nimbostratus clouds which can result in
moderate rain.
Slide32Slide33Slide34Slide35Stationary Front
a front between warm and cold air masses that is moving very slowly or not at all.
Ocluded Front
a composite front formed when a cold front overtakes a warm front and forces it aloft.
Slide36As air masses circulate and move, pushed by winds, they directly influence the weather in the regions over which they pass. In this way, they help to circulate heat and humidity in the atmosphere.
Slide37Summer Southwest Monsoon - Habagat
Caused by warm air passing over the ocean in the equator. Because of this, air acquires moisture from evaporating water which brings considerable amount of rain as it hits land. This warm, moist air usually comes from the Indian Ocean.
Slide38Visits the Philippines from the months of June to September. It customarily produces abundant rain, causing strong winds and wet climate in the country.
Slide39Slide40Winter Northeast Monsoon -
Amihan
Brings cooler and calmer climate in the Philippines and is experienced from November to February.
Brings cool and dry winds formed from the regions of Mongolia, Siberia, and Northern China during winter seasons.
Slide41Winter Monsoon weather features a generally less strong, Northeast breeze with prolonged periods of successive cloudless days.
Slide42Slide43FORMATION OF ITCZ
Inter-Tropical Convergence Zone
The trade winds from the Northern hemisphere and Southern hemisphere bring the tropical air masses from both the hemisphere together and they meet along a zone which is called Inter-Tropical Convergence Zone. It lies near the equator and may shift by about ten degrees latitude north and south. These air masses are warm and humid resulting in the formation of convective clouds and subsequent heavy precipitation during most part of the year.
Slide44The Inter-Tropical Convergence Zone (ITCZ) appears as a band of clouds consisting of showers, with occasional thunderstorms, that encircles the globe near the equator. The solid band of clouds may extend for many hundreds of miles and is sometimes broken into smaller line segments. The ITCZ follows the sun in that the position varies seasonally. It moves north in the northern summer and south in the northern winter. The ITCZ (pronounced "itch") is what is responsible for the wet and dry seasons in the tropics
Slide45Slide46