WorksheetsGlobal Warming
Total questions: 20
Worksheet time: 40mins
Name
Class
Date
1.
Which of the following statements about the greenhouse effect is false?
a)
The amount of heat trapped in the troposphere depends on concentrations of greenhouse gases.
b)
The greenhouse effect is a new theory that explains the warming of the atmosphere.
c)
Heat trapped by greenhouse gases keeps the planet warm enough for life.
d)
The predominant greenhouse gases are water vapor, carbon dioxide, methane, and nitrous oxide.
The predominant greenhouse gases are water vapor, carbon dioxide, methane, and nitrous oxide.
The predominant greenhouse gases are water vapor, carbon dioxide, methane, and nitrous oxide.
2.
Over an extended period of time, the United States has been responsible for the majority of global CO2 emissions, at 25% of the total for all countries. In 2008, the largest emitter was
a)
United States
b)
Japan
c)
China
d)
Russia
3.
Increased levels of carbon dioxide in the atmosphere have been implicated in which of the following?
a)
Increased global warming
b)
Increased seawater acidity
c)
decreased seawater temperatures
d)
both increased global warming and increased seawater acidity
4.
Which of the following would make a greater contribution to rising sea levels?
a)
melting sea ice
b)
melting land-based ice
c)
increased levels of precipitation in some areas
d)
increased levels of atmospheric water vapor
5.
A warmer world is least likely to result in
a)
decreased food production
b)
reductions in biodiversity
c)
a rise in sea level
d)
more moderate weather
6.
In a warmer world, we would expect more
a)
droughts
b)
hurricanes
c)
desert expansions
d)
all of these
7.
A loss of 15% of ____________________ would cause a one meter rise in sea level that would threaten millions of people and cause trillions of dollar of damage to coastal areas.
a)
the Antarctic ice sheet
b)
inland glaciers in Alaska
c)
Greenland's ice sheet
d)
Iceland's ice sheet
8.
The threat of global warming can be addressed by
a)
using energy more efficiently
b)
reducing deforestation
c)
slowing population growth
d)
shifting to renewable resources
9.
The Kyoto treaty to reduce global warming
a)
does not require developing countries to make any cuts in their greenhouse gas emissions
b)
went into effect in 2005
c)
was not supported by the U.S. after 2001
d)
all of these answers
10.
President Barack Obama wants the United States to
a)
lead the way in creating a new international agreement on climate change
b)
reduce our carbon emissions to 1990 levels by 2020
c)
lead the way in creating a new international agreement on climate change and reduce our carbon emissions to 1990 levels by 2020
d)
all of these answers
11.
Which of the following statements is false?
a)
Ozone in the lower stratosphere shields the earth from about 95% of the sun’s harmful ultraviolet rays.
b)
Fluorine atoms are most responsible for the breakdown of ozone to molecular oxygen.
c)
CFCs are odorless and stable.
d)
CFCs are nonflammable, nontoxic, and noncorrosive.
12.
Chlorofluorocarbons are
a)
nontoxic
b)
corrosive
c)
expensive
d)
flammable
13.
CFCs take ____ years to reach the stratosphere.
a)
1-2
b)
5-10
c)
11-20
d)
20-30
14.
In 1987, 36 nations meeting in Montreal, Canada, developed the Montreal Protocol to reduce production of
a)
Carbon Dioxide
b)
Nitrous Oxide
c)
CFCs
d)
Toxic Wastes
15.
Which of the following are effects of ozone depletion?
a)
increased photochemical smog
b)
reduced crop yields
c)
immune system suppression
d)
all of these
16.
With immediate and sustained action to stop production of all ozone-depleting chemicals:
a)
The ozone-hole problem will be solved immediately.
b)
It will take about 30 years for the earth’s ozone layer to recover to pre-1950 levels.
c)
It will take about 60 years for the earth’s ozone layer to recover to pre-1950 levels.
d)
It will take about 60 years for the earth’s ozone layer to recover to 1980 levels.
17.
What factors determine how air circulates in the lower atmosphere?
a)
Rotation of the earth on its axis and the properties of air, water, and land.
b)
The properties of air, water, and land.
c)
Rotation of the earth on its axis.
d)
Uneven heating of the earth’s surface by the sun.
18.
The term "greenhouse effect" describes
a)
occupational diseases of florists
b)
the trapping of heat energy in the troposphere by certain gaseous molecules
c)
the trapping of heat energy in the stratosphere by nitrogen
d)
efforts by the White House to support environmental legislation
19.
All of the following are greenhouse gases except
a)
water vapor
b)
nitrogen
c)
carbon dioxide
d)
nitrous oxide
20.
Which statement is the most accurate?
a)
Climate is determined by average weather conditions.
b)
Climatologists examine data from one to a few years to estimate weather.
c)
Weather is determined by average climate conditions.
d)
None of these answers are accurate.
100 %
