EQ1 - 1.1 The Atmosphere Operates As A Global System Which Transfers Heat Around The Earth Flashcards

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1
Q

At what degrees is the Hadley Cell at?

A

0°-30°

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2
Q

At what degrees is the Ferrel Cell?

A

30°-60°

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3
Q

At what degrees is the Polar Cell?

A

60°-90°

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4
Q

What pressure is between the Polar Cell and the Ferrel Cell?

A

Low pressure - 60°.

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5
Q

What pressure is between the Ferrel and Hadley Cells?

A

High pressure - (30°)

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6
Q

What pressure is it between the two Hadley cells? (equator)

A

Low pressure - 90°

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7
Q

What happens to heat and gas if it reaches to the atmosphere?

A

Atmosphere remits heat/gases but eventually they will all escape to space.

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8
Q

Why is heat moved around the world?

A

To balance the uneven heat distribution around the world.

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9
Q

Surface High Pressure

A

Where there is more air at the surface.

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10
Q

Low Pressure Surface

A

Less air at the surface.

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11
Q

Less Dense Air Movement

A

When air is heated it rises as it is less dense.
When it rises it transfers heat to the the atmosphere.
It cools, condenses and usually clouds and rain occur.

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12
Q

Air Movement More Dense

A

When air cools it becomes more dense.
Falls and as it does it transfers heat to the ground.
Warms as it falls leaving clear skies and little/no rainfall.

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13
Q

How is the wind direction determined?

A

Causes when air moves from an area of high pressure to an area of low pressure.

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14
Q

Where’s the most radiation received on the Earth’s surface?

A

The equator, due to the curvature being the furthest out in comparison to the Northern and Southern Hemispheres.

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15
Q

Incoming Solar Radiation at the Northern Hemisphere

A

Radiation has to get through a larger, thicker bit of atmosphere.
Therefore there is less radiation that will be received on the surface.

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16
Q

Solar radiation in the Southern Hemisphere

A

Large thicker atmosphere for radiation to get through.

Therefore, less radiation will reach the Earth’s surface.

17
Q

How do atmospheric circulation cells explain how heat energy is transferred around the world?

A
  • Warm air rises - causes low pressure to circle in the wind direction.
  • Air cools and changes to high pressure causing it to move in the wind direction.
18
Q

What is ocean current heat transfer?

A

Large scale movements at water that transfer heat energy from warmer-cooler regions.

19
Q

How do surface currents occur and what do they do?

A

Caused by winds.

Help transfer heat away from the equator.

20
Q

How are deep ocean currents driven?

A

By differences in water density.

21
Q

How does water density increase at the poles?

A

Surrounding water gets saltier when water freezes.

22
Q

What does the dense water cause?

A

The cold, saltier water causes warmer water to flow in at the surface, causing a current.