Global Warming MCQ Questions and Answers for Practice

1. Earths temperatures are stable because we are surrounded by ________ which allows the right amount of sunlight in to warm the Earth.

1. a cloud layer
2. an atmosphere
3. gravity
4. water

2. Too many greenhouse gasses in the atmosphere may block heat from escaping into space and trap too much heat next to the Earth’s surface causing: ________________.

1. another ice age
2. global warming
3. earthquakes
4. volcanic eruptions

3. How are humans making greenhouse gases of our own?

1. burning fossil fuels in our cars
2. burning forests
3. with large-scale agriculture
4. all of these

4. The solar radiation that bounces off the Earth back toward the atmosphere is mostly _____ (with a longer wavelength).

1. gamma radiation
2. x-ray radiation
3. nuclear radiation
4. infrared radiation

5. The solar energy that warms the Earth includes visible light, infrared and _____ coming from the sun.

1. gamma rays
2. ultraviolet radiation
3. microwaves
4. sunspots

6. This layer keeps us not too hot in the summer and not too cold in the winter. Scientists call this the ________.

1. greenhouse effect
2. seasonal effect
3. ocean effect
4. lake effect

7. Things you can do to help decrease global warming include:

1. Keep your air conditioner on high.
2. Turn off your lights when you’re not using them.
3. Keep your freezer door open.
4. Eat more ice cream.

8. Something that might happen because of global warming is: __________.

1. melting polar ice caps
2. more reflected sunlight off the ice pack
3. lower sea levels
4. a sale on bathing suits

9. Certain gases in the atmosphere: water vapor, carbon dioxide, methane and nitrous oxide, help maintain the Earths temperatures and climate. These are called: __________ .

1. ozone gases
2. solar gases
3. greenhouse gases
4. stomach gases

10. The layer of the atmosphere closest to Earth is called the: _____________.

1. troposphere
2. stratosphere
3. exosphere
4. mesosphere

11. What place experiences the greatest seasonal variability in temperature?

1. The North Atlantic Ocean
2. Central Canada
3. Costa Rica, Central America
4. Mumbai, India

12. If Earth had no greenhouse gases, the planet would be ?

1. Too hot to support life
2. Cooler but still able to support life
3. Too cold to support complex life.
4. It depends on the species of aerosol in the GHG-free atmosphere.

13. Why are there winds?

1. Because air flows down-hill
2. Because of temperature differences.
3. Because air flows from high density to low density
4. Because air flows along isobars.

14. At a constant pressure, hot air than cold air

1. is more dense
2. is less dense
3. has more vapor
4. has less vapor