Greenhouse Effect
15 Questions • 6th - 7th Grade • Other Sciences
Worksheets Name
Greenhouse Effect Class
Total questions: 15
Worksheet time: 9mins Date
1. 1. Which of these could increase average global temperatures?
a) A. increased use of fossil fuels b) A. increased ocean plants
c) A. decreased carbon dioxide d) A. increased numbers of animal
emissions species
2. 1. Which of the following pairs of gases are the most abundant in Earth’s
atmosphere?
a) Nitrogen and Oxygen. b) Methane and Nitrogen.
c) Water Vapor and Oxygen. d) Carbon Dioxide and Carbon
Monoxide.
3. Which of the following gases, released by animals as a waste product of digestion,
can add to global warming?
a) Carbon Dioxide b) Methane
c) Chlorofluorocarbon d) Nitrogen
4. 1. In the past, refrigerators, aerosol spray propellants and cleaning solvents were
all sources of a greenhouse gas known as
a) carbon dioxide b) methane
c) chlorofluorocarbon (CFC) d) nitrous oxide
5. 1. Carbon dioxide (CO2) is added to the atmosphere by each of the following
EXCEPT
a) burning fossil fuels. b) decay of organic matter and animal
waste.
c) water vapor. d) eruption of volcanoes.
6. 1. Certain gases in the atmosphere – water vapor, carbon dioxide, methane and
nitrous oxide – help maintain the Earth’s temperatures and climate. These are
called: __________ .
a) A. ozone gases b) A. solar gases
c) A. greenhouse gases d) A. stomach gases
7.
1. In the diagram to the right, which of the following best explains the
temperatures observed at Earth’s surface?
a) Without a greenhouse effect, energy b) With a greenhouse effect, the upper
absorbed at Earth’s surface is lost to atmosphere reflects away all the
space. Sun’s energy.
c) Without a greenhouse effect, all the d) With a greenhouse effect, heat flows
Sun’s energy is absorbed deep into from the cold atmosphere to the
Earth’s crust. warm surface.
8. 1. 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: ____________.
a) A. another ice age b) A. global warming
c) A. earthquakes d) A. volcanic eruptions
9. Something that might happen because of global warming is: __________.
a) A. melting polar ice caps b) A. more reflected sunlight off the ice
pack
c) A. lower sea levels d) A. a sale on bathing suits
10. 1. Why is the Ozone important to life on Earth?
a) A. The Ozone reflects all the Ultra b) A. The Ozone absorbs all the heat
Violet radiation that come up from the Earth.
c) The Ozone provides all the oxygen to d) The Ozone protects the Earth’ s
Earth. atmosphere and the life on Earth
from harmful radiant energy emitted
by the sun
11. Over the past 200 years, the level of carbon dioxide in the atmosphere has
a) decreased slightly. b) increased until recently, and then
decreased.
c) increased steadily. d) stayed about the same.
12. Increased carbon dioxide may cause global warming by
a) allowing more sunlight into the b) reflecting more sunlight from clouds.
atmosphere.
c) reducing the amount of oxygen in d) trapping more heat in the
the air. atmosphere.
13. Nearly half of the pollution caused by burning fossil fuels comes from
a) factories. b) power plants.
c) home furnaces. d) motor vehicles. (cars, buses,
machines, boats…)
14. One thing people in the United States could do to reduce air pollution is
a) drive their cars more. b) burn more fossil fuels.
c) use more public transportation. d) build more factories.
(Which would mean less vehicles on
road)
15. The greenhouse effect is
a) the absorption of energy by clouds. b) a gradual increase in the
temperature of the atmosphere.
c) the reflection of solar energy into the d) the process by which gases hold
atmosphere. heat in the atmosphere.
Answer Keys
1. a) A. increased use of 2. a) Nitrogen and 3. b) Methane
fossil fuels Oxygen.
4. c) chlorofluorocarbon 5. c) water vapor. 6. c) A. greenhouse
(CFC) gases
7. a) Without a 8. b) A. global warming 9. a) A. melting polar ice
greenhouse effect, caps
energy absorbed at
Earth’s surface is lost
to space.
10. d) The Ozone 11. c) increased steadily. 12. d) trapping more
protects the Earth’ s heat in the
atmosphere and the atmosphere.
life on Earth from
harmful radiant
energy emitted by
the sun
13. d) motor vehicles. 14. c) use more public 15. d) the process by
(cars, buses, transportation. which gases hold
machines, boats…) (Which would heat in the
mean less vehicles atmosphere.
on road)
