Wind Movement Flashcards

S6E4a. Demonstrate that land and water absorb and lose heat at different rates and explain the resulting effects on weather patterns. S6E4b. Relate unequal heating of land and water surfaces to form large global wind systems.

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1
Q

Uneven heating of Earth’s surface by the Sun causes some areas to be warmer than others

A

EQUATOR GETS HOTTEST AND MOST DIRECT SUNLIGHT

EARTH TILTED 23 DEGREES – FLOW FROM HIGHEST OF THE POLES TO THE EQUATOR

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2
Q

Uneven heating of land forms…

A

wind systems.

GLOBAL WINDS

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3
Q

Wind is caused by differences in..

A

air pressure

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4
Q

Areas of high pressure move to areas of…

A

low pressure

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5
Q

Air pressure is related to

A

density

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6
Q

Tightly packed particles have ____ density & pressure =
____ temperature

A

High density & pressure (more matter in the same volume - heat a gas = volume expands) - these increase

Low temperature

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7
Q

Loosely packed particles have ____ density & pressure =

____ temperature

A

Low density & pressure (less matter in the same volume) - these decrease
High temperature

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8
Q

Differences in density and pressure cause…

A

wind and air movement

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9
Q

The movement of air occurs in ..

A

convection currents

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10
Q

Large Convection Currents are formed because of…

This produces…

A

temperature differences between the equator and the poles.

global wind systems

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11
Q

The Coriolis Effect

A

Surface winds and surface currents are affected by the rotation of the Earth - CURVED PATTERN IS DUE TO THE ROTATION OF THE EARTH

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12
Q

Because Earth rotates toward the east, winds appear to curve to the ____ in the northern hemisphere and to the ____ in the southern hemisphere

A

RIGHT, LEFT

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13
Q

Global wind systems determine …

A

the major weather patterns for the entire planet.

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14
Q

Smaller wind systems affect…

Two such wind systems are…

A

local weather.

sea breezes and land breezes.

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15
Q

Sea Breeze - has what type of pressure on the sea and where is the wind coming from?

What time of day does this occur and why?

A

high pressure on the sea, wind (cooler air) comes from the sea

Day, the sun heats the land (low pressure) much faster than the water because water has a high specific heat

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16
Q

Land Breeze - has what type of pressure on the land and where is the wind coming from?

What time of day does this occur and why?

A

high pressure on the land, wind (cooler air) comes from the land

Night, the earth’s surface is NOT being heated by the sun. Land cools more rapidly than ocean water (warm water = low pressure)