Composition of the Atmosphere

Multiple Select

What are the three main gases present in our atmosphere? (select all that apply)

• Oxygen

• Carbon Dioxide

• Argon

• Nitrogen

Multiple Choice

There is about ______% Nitrogen in our atmosphere.

• 60%

• 70%

• 80%

• 90%

Multiple Choice

Nitrogen's main function is:

• used in soil to grow plants, trees, and flowers.

• needed for human and animal respiration

• traps heat onto Earth to make it livable

Multiple Choice

There is about _____% Oxygen in our atmosphere.

• 10%

• 20%

• 30%

• 40%

Multiple Choice

Oxygen's main function is:

• used in soil to grow plants, trees, and flowers.

• needed for human and animal respiration

• traps heat onto Earth to make it livable

Multiple Choice

There is about _____% Carbon Dioxide in the atmosphere.

• 1%

• 10%

• 0.5%

• 5%

Multiple Choice

Carbon Dioxide's main function is:

• used in soil to grow plants, trees, and flowers.

• needed for human and animal respiration

• traps heat onto Earth to make it livable

Multiple Choice

A second function of Oxygen is...

• it combines with the oxygen in the air to make livable, breathable, air.

• it protects us from harmful UV sun rays.

• it is needed for plant life

Multiple Choice

A second function of Carbon Dioxide is...

• it combines with the oxygen in the air to make livable, breathable, air.

• it protects us from harmful UV sun rays.

• it is needed for plant life

​Greenhouses gases such as carbon dioxide, methane, and nitrous oxides warm the Earth's surface

Multiple Choice

What is the greenhouse effect?

• The warming of a planet due to trapped heat energy.

• The cooling of Earth due to air pollution.

• The heating of a solid, such as a rock.

Multiple Choice

Without the Greenhouse Effect the Earth would be

• warm 
• cold
• dead

Multiple Choice

Cutting down large forests (deforestation) can result in:

• little to no changes

• more homes for animals

• less plants to absorb carbon dioxide, a greenhouse gas

Greenhouse Gases

• HERE ARE THE FIVE MAJOR GREENHOUSE GASES!!!!

• Carbon Dioxide- burning fossil fuels

• Methane- Cattle, coal-mines

• Water Vapor- formed from evaporation

• CFCs- BAD BAD BAD!! Chlorofluorocarbons (No longer used, HURTS our ozone layer!)

• Nitrous Oxide- Burning organic material / burning fuels in industries

Multiple Choice

Which of the following are greenhouse gases?

• Carbon dioxide

• Methane

• Water vapor

• All answers are correct

The Greenhouse Effect

• Earth is similar to a greenhouse

• The Earth's atmosphere acts like the glass in the atmosphere

• Sunlight streams through the atmosphere and heats the Earth.

• As this heat radiates up from Earth's surface, some of it escapes into space.

• The rest of the heat is absorbed by gases in the troposphere and warms the air.

​gradual heating of Earth's surface, oceans and atmosphere caused by human activity

Multiple Choice

What happens to the temperature if more greenhouse gases are released into the atmosphere?

• Temperature goes up
• Temperature goes down

Multiple Choice

The highest gaseous pollutant is

• methane

• nitrous oxide

• carbon dioxide

• fluorinated gases

Multiple Select

Which 2 sources of pollution are natural and release CO₂ into the air? (Pick 2)

• forest fires

• volcanic activity

• burning coal

• coal dust in mines