Understanding Earth's Atmosphere and Global Warming

What percentage of Earth's atmosphere is made up of nitrogen?

• 1%

• 78%

• 50%

• 21%

Which gases are primarily responsible for trapping heat in Earth's atmosphere?

• Hydrogen and Helium

• Oxygen and Nitrogen

• Carbon Dioxide and Methane

• Argon and Neon

How does the greenhouse effect help maintain Earth's temperature?

• By cooling the Earth's surface during the day

• By reflecting all solar radiation back into space

• By trapping heat emitted from Earth and preventing it from escaping into space

• By absorbing sunlight and converting it into oxygen

What has been a major cause of increased carbon dioxide levels in the past 200 years?

• Increased solar activity

• Burning of fossil fuels

• Deforestation

• Increased volcanic activity

Which of the following is a suggested method to reduce global warming?

• Cutting down more trees

• Investing in renewable energy sources

• Increasing fossil fuel consumption

• Using more plastic products