Greenhouse Effect and Climate Change

What do greenhouse gases do in our atmosphere?

• They absorb radiation given off by the Earth
• They block harmful radiation from reaching the Earth
• They keep all the air within the Earth
• They make the Earth cooler

What is the most common gas in our atmosphere?

• Nitrogen
• Oxygen
• Carbon Dioxide
• Methane

Which of the following is an example of a greenhouse gas?

• Carbon Dioxide
• Nitrogen
• Oxygen
• Neon

True or False: All of the radiation from the Sun is absorbed by the Earth

• True
• False

What do scientists think the effect will be of having more greenhouse gases in our atmosphere?

• More warming of the atmosphere
• More cooling of the atmosphere
• More air in the atmosphere
• Less air in the atmosphere

What do humans do that releases greenhouse gases into the atmosphere?

• Burn fossil fuels (like gas and coal)
• Build cement buildings
• Ride bikes and use solar energy
• Plant trees

Do we need greenhouse gases on Earth?

• Yes - they keep the Earth warm
• Yes - they keep all the gases on our planet
• No - they only cause terrible climate change
• No - they only block some of the Sun's rays

Which of the following is an example of how climate change could effect agriculture?

• Increased droughts could reduce the amount of water available for irrigation
• Too cold to grow certain crops
• Fewer storms - so more nice weather for planting and harvesting
• Fewer pests and weeds

What is one possible effect on people's health due to climate change?

• Diseases might spread to new areas
• People would become shorter
• More animals might have diseases like rabies
• Fewer hospitals would be built

Carbon Dioxide levels in our atmosphere are _____

• At an all time high in Earth's history
• At an all time low in Earth's history
• About the same as it was 800,000 years ago
• Lower than it was 75 years ago