Properties
Layers of the Atmosphere
Other
Pollution
Vocabulary
100

The top two most abundant gases in the air.

What are nitrogen (78%) and oxygen (21%)?

100
The second layer that contains the ozone layer that absorbs much of the harmful ultraviolet (UV) radiation from the sun.
What is the stratosphere?
100

Earth's atmosphere is held down by:

gravity

100

 Natural processes that cause air pollution, and climate change, within the Earth's atmosphere can consist of:

Volcanos and wildfires

100

A mixture of gases and particles that surround a planet, held by gravity is called the-

atmosphere

200

Earth reuses and recycles:

Nitrogen

200
The lowest layer, so it is the most dense air and has the highest air pressure. This is where all weather and most clouds occur.
What is the troposphere?
200

Gas in the atmosphere that acts like a greenhouse and traps heat

Carbon dioxide

200

Effects of air pollution on humans

Asthma, emphysema, allergies, lung cancer, bronchitis

200
Any harmful substances that build up in the air

What is air pollution?

300
How air pressure changes going up in the atmosphere.
What is as altitude increases, air pressure decreases?
300
The 3rd layer up, where most meteoroids burn up by friction with the air, and become meteors (also called shooting stars).
What is the mesosphere?
300


This changes nitrogen into a form that plants can use

Lightning 

300

An ON-GOING process that can alter the atmosphere

The water cycle

300

Gases in the atmosphere that absorb and give off infrared radiation

Greenhouse gases

400

Planets with thick (dense) atmosphere have _________ atmosphere and ________ gravity?


Cold atmosphere and strong gravity

400
The 4th layer up that deflects some of the sun's energy and causes the northern lights, or aurora borealis.
What is the ionosphere (or thermosphere)?
400

A result of the greenhouse effect (trapping energy from the sun)

Earth has a moderate temperature

400

4 ways humans can help global warming

Reduce carbon emissions, Recycle, Turning off the lights, Set the thermostat lower in the                 winter, Walk places

400

Green house gas that occurs naturally 

water vapor

500
How air density changes going up in the atmosphere.
What is as altitude increases, air density decreases?
500
The highest layer of the atmosphere that is the boundary with outer space. Communications satellites orbit here.
What is the exosphere?
500

Where would you NOT find CFC 's (chlorofluorocarbons)

Pesticides

500
4 natural sources of air pollution.
What are radon, dust, smoke, ash, greenhouse gases, mold spores, pollen, etc. (4 of them)?
500

The major source of ozone depletion

CFCs (chlorofluorocarbons) 

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