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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

13. Why are there winds?

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

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

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