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greenhouse effect

Total questions: 15

Worksheet time: 9mins

Name
Class
Date
1.

The greenhouse effect is about

a)

warming the atmosphere because of increased CO2 levels

b)

warming the atmosphere because of decreased CO2 levels

c)

cooing the atmosphere because of increased CO2 levels

d)

cooling the atmosphere because of decreased CO2 levels

2.

The greenhouse effect is a natural process

a)

true

b)

false

3.

The greenhouse effect is caused by

a)

more heat arriving at the Earth from the sun

b)

the Earth releasing more heat at night

c)

gases in the air trapping heat released by the Earth

4.

The graph shows us that

a)

the earth temperature is always increasing

b)

the earth's temperature has steadily increased since 1900

c)

the earth's temperature has steadily rising since the 1960s

d)

the earth's temperature decreased during the 19th and 20th centuries

5.

Which of the gases is NOT a greenhouse gas?

a)

water vapour

b)

carbon monoxide

c)

carbon dioxide

d)

methane

6.

The area of human activity responsible for the highest greenhouse gas emissions is

a)

energy supply

b)

transport

c)

agriculture

d)

industrial

7.
 Which of the following activities contributes the most to carbon emissions globally?
a)
Deforestation
b)
Agriculture
c)
Burning fossil fuels
d)
Respiration
8.
Melting of glaciers and polar ice caps....
a)
will result in cooler temperatures in the Arctic
b)
will result in sea-levels rising
c)
Will have no effect on ecosystems
d)
None of the above
9.
Which of the following are greenhouse gases?
a)
Carbon dioxide
b)
Methane
c)
Water vapor
d)
All answers are correct
10.
The gas that is most abundant in the atmosphere is
a)
oxygen
b)
nitrogen
c)
carbon dioxide
d)
argon
11.
What happens to the temperature if more greenhouse gases are released into the atmosphere?
a)
Temperature goes up
b)
Temperature goes down
12.
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
13.
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
14.
1.  Why is the Ozone important to life on Earth?
a)
A.   The Ozone reflects all the Ultra Violet radiation
b)
A.  The Ozone absorbs all the heat that come up from the Earth.
c)
The Ozone provides all the oxygen to Earth.
d)
The Ozone protects the Earth’ s atmosphere and the life on Earth from harmful radiant energy emitted by the sun   
15.
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.

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