Science 9

What do greenhouse gases do in our atmosphere?

• they absorb radiation given of by the earth.

• they keep all the air within the earth

• they block harmful radiation from reaching the Earth

• They make the earth cooler

What is the common gas in the atmosphere?

• Methane

• Oxygen

• Carbon dioxide

• Nitrogen

3. Which of the following is an example of greenhouse gas?

• Oxygen

• Carbon dioxide

• Neon

• nitrogen

4. TRUE or FALSE: All of the radiation from the Sun is absorbed by the Earth.

• TRUE

• False

5. What do scientist 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

• none of the above

Which of the following can cause global warming?

• volcanic eruptions

• the amount of rainfall

• The rising of warm air into the atmosphere

• Increase of the amount of carbon dioxide in the atmosphere

7. Which activity does not contribute to global warming?

• reforestation

• illegal fishing

• mining activities

• incineration of garbage

8. Which of the following is an indication of global warming?

• rising of sea level

• coastal erosion

• decrease of global temperature

• strong waves in the ocean

9. When does greenhouse effect happen?

• Greenhouse gases on the surface absorb heat from the atmosphere.

• Greenhouse gases on the surface absorb heat from the earth's interior

• greenhouse gases in the upper atmosphere absorb heat from the outer space

• greenhouse gases in the lower atmosphere atmosphere absorb heat from the earth's surface

10.What are the impacts of climate change in our environment ?

• environment is becoming hotter

• rising of the sea level

• melting of ice caps in polar regions

• all of the above