Global Warming and Gases in the Atmosphere

Global warming is ...

• the term used to describe the reduction of the carbon dioxide in the atmosphere.

• the term used to describe the rising of the average temperature on Earth.

• the term used to describe the elimination of the pollutants and chemicals from the atmosphere.

Many things can have an impact on global warming including ...

• natural temperature fluctuations of the planet, volcanic eruptions, and increased lunar activity.

• artificial temperature fluctuations of the planet, volcanic eruptions, and increased solar activity.

• natural temperature fluctuations of the planet, volcanic eruptions, and increased solar activity.

The greenhouse effect ...

• is a process that occurs when gases in Earth's atmosphere release the Sun's heat.

• is a process that occurs when gases in Earth's atmosphere trap the Sun's heat.

• is a process that occurs when gases in Solar's atmosphere reach the Earth.

The main greenhouse gases that keep the Earth warm are ...

• water vapor, carbon dioxide, and methane.

• water vapor, carbon dioxide, and nitrogen.

• water vapor, oxygen, and methane.

Things like ____________ , _____________ , and __________________ can help reduce the quantity of greenhouse gases.

• carpooling / riding bicycles / deforestation

• carpooling / riding bicycles / planting trees

• burning fossil fuels / riding bicycles / planting trees

_________________ and ________________ make up 99 percent of Earth's atmosphere.

• Argon / nitrogen

• Carbon dioxide / argon

• Nitrogen / oxygen

The air is composed of ________________________________________.

• 78% nitrogen, 21% oxygen, 1% trace gases

• 78% oxygen, 21% nitrogen, 1% trace gases

• 78% trace gases, 21% oxygen, 1% nitrogen

Air pollution is when _______________ chemicals, gases, and particles enter the air and the atmosphere causing _________ to animals and damaging the natural cycles of the Earth.

• unwanted / benefits

• unwanted / harm

• necessary / harm

Natural causes of the air pollution include _______________________, ________________, and ________________.

• eruptions of volcanoes / tornadoes / deforestation

• earhquakes / tsunamis / forest fires

• eruptions of volcanoes / dust storms / forest fires

Factories, power plants, cars, airplanes, chemicals, fumes from spray cans, and methane gas frrom landfills are examples of ______________ causes of air pollution.

• natural

• burning fossil fuels

• human