General Science-Earth's Atmosphere Flashcards

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1
Q

The four layers of the atmosphere are what?

A

Troposphere
Stratosphere
Mesosphere
Thermosphere

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2
Q

Thermosphere and Mesosphere are WHAT the Ozone?

A

Top of

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3
Q

Stratosphere and Troposphere are WHAT the Ozone?

A

Below

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4
Q

The lowest level of the atmosphere, where all the weather occurs. It is a region of rising and falling packets of air.

A

Troposphere

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5
Q

Depending on the latitude and the season, the Troposphere can range between WHAT NUMBERS in thickness.

A

6-17 Kilometers Thich.

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6
Q

Most of the air surrounding the earth is roughly WHAT and WHAT found in the Troposphere.

A

79 % Nitrogen

21% Oxygen

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7
Q

What is above the Troposphere?

A

Stratosphere

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8
Q

In the Stratosphere, air flow is mostly what?

A

Horizontal

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9
Q

The thin ozone layer is located where?

A

Upper Stratosphere

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10
Q

Primarily responsible for absorbing the UV radiation from the sun.

A

Ozone Layer

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11
Q

The temperature in the Stratosphere is about?

A

-60 Celsius

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12
Q

This is above the Stratosphere, where we see meteoroids fall to the Earth and burn up in the atmosphere.

A

Mesosphere

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13
Q

Mesosphere extends to about how much above Earth’s surface?

A

90 Kilometers

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14
Q

The temperature in the Mesosphere is as low as what?

A

-90 Celsius

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15
Q

Above the Mesosphere is the what?

A

Thermosphere

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16
Q

In the Thermosphere, temperatures will what with the altitude.

A

Increase

17
Q

Thermosphere has temperatures as high as what?

A

2,000 Celsius.

18
Q

Why is the Thermosphere so hot?

A

Because there is little to deflect the solar radiation in this layer.