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Worksheets7.3 Global Warming
Total questions: 21
Worksheet time: 11mins
Name
Class
Date
1.
The greenhouse gas having the greatest role in human-caused global warming is
a)
methane
b)
carbon dioxide
c)
CFCs (chlorofluorocarbons)
d)
ozone
2.
Changes in temperature are expected to be greatest
a)
near the equator
b)
near the poles
3.
As greenhouse gases increase, oceans are becoming
a)
clearer
b)
saltier
c)
more acidic
d)
muddier
4.
How do changes in the ocean affect coral reefs?
a)
Warm, acidic water causes coral to bleach and then die
b)
Coral reefs grow faster in warmer water
c)
Warmer water supports fish that like to eat coral, destroying the reefs
d)
Coral reefs aren't affected by changes in temperature and acidity
5.
The main human activity that releases greenhouse gases is
a)
using bottled water
b)
burning fossil fuels
c)
texting on cellphones
d)
eating meat
6.
Which kind of land can store 20 to 100 times as much carbon as the other?
a)
natural ecosystems
b)
agricultural land
7.
Deforestation contributes to greenhouse gases by
a)
loss of trees that would otherwise remove carbon dioxide from the air
b)
burning wood releases carbon dioxide
c)
Both are correct
8.
Water vapor is a greenhouse gas
a)
True
b)
False
9.
Some greenhouse gases are naturally present in the Earth's atmosphere
a)
True
b)
False
10.
It was hot all week last week. Is this a sign of climate change?
a)
Yes
b)
No
11.
Worldwide, temperatures have been increasing for more than 100 years. Is this evidence of global warming?
a)
yes
b)
no
12.
Which of the following is contributing to an increase in carbon dioxide in the atmosphere?
a)
deforestation
b)
photosynthesis
c)
oceans
d)
all of the above
13.
Things you can do to help decrease global warming include:
a)
Eat more ice cream.
b)
Keep your freezer door open.
c)
Keep your air conditioner on high.
d)
Turn off your lights when you’re not using them.
14.
Which of the following activities contributes the most to carbon emissions globally?
a)
Deforestation
b)
Agriculture
c)
Burning fossil fuels
d)
Respiration
15.
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
16.
What is the mixture of gases surrounding the Earth called?
a)
carbon
b)
concentration
c)
atmosphere
d)
emissions
17.
What is the average weather for a particular time and region called?
a)
drought
b)
weather
c)
emissions
d)
climate
18.
What is the definition of weather?
a)
a period of abnormally dry weather that lasts at least 2 years
b)
the specific condition of the atmosphere at a particular place and time
c)
a complex community of organisms and the community's environment
d)
a release of toxic gas
19.
Carbon is stored in
a)
Trees and other living things
b)
Oceans
c)
underground in soil and fossil fuels
d)
All are correct
20.
Human activity is adding additional greenhouse gases to the amount that are in the atmosphere naturally
a)
True
b)
False
21.
The warming of the atmosphere by the trapping of heat being radiated to space is called
a)
evaporation
b)
condensation
c)
the greenhouse effect
d)
radiation
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