Air pollution

Natural causes of air pollution include all of the following

• forest fires

• dust

• volcanic ash

• wind

• pollen

What is the main cause of air pollution?

• plowing fields and releasing dust

• using solar power

• burning fossil fuels

• using water power

Which gas in our atmosphere is most abundant?

• Argon
• Oxygen
• Nitrogen
• Carbon Dioxide

In which layer of the atmosphere does weather occur?

• Mesosphere
• Thermosphere
• Stratosphere
• Troposphere

Which of the following is the correct order of the atmosphere layers from Earth to space?

• troposphere, stratosphere, mesosphere, thermosphere, exosphere
• troposphere, mesosphere, thermosphere, exosphere, stratosphere
• thermosphere, stratosphere, mesosphere, troposphere, exosphere
• troposphere, stratosphere, mesosphere, exosphere, thermosphere

We live in the __________________layer, a level of the atmosphere.

• Troposphere
• Stratosphere
• Mesosphere
• Exosphere

What does the earth's atmosphere do?

• help to regulate the temperature on Earth
• Help UV rays to reach the Earth's surface
• Creates meteors in the sky
• Keep ocean waters cold

Without the Greenhouse Effect the Earth would be

• warm 
• cold
• dead

What gas from the list below is a cause for global warming?

• Urethane
• Oxygen
• Carbon Dioxide

What are the two most abundant gases in our atmosphere?

• water vapor

• nitrogen

• oxygen

• argon

• carbon dioxide