X

Report a problem



Climate Change

Number of questions: 24

This is a preview. Unlock all the questions and answers for just $9.99.

Buy now
1) Volcanoes release how much CO2 compared to emissions from human activities?
  1. under 3%
  2. 40%
  3. 90%
  4. 170%
Answers are locked. Please click here to buy them. 2) When the earth warms, what % of the heat goes into the oceans, and what % into land and atmosphere?
  1. 10% into oceans, 90% land+atmosphere
  2. 50% into oceans, 50% land+atmosphere
  3. 95% oceans, 5% land+atmosphere
Answers are locked. Please click here to buy them. 3) Over many thousands of years, the earth naturally goes through various "wobbles" in its rotation and in its orbit around the sun. These natural Milankovitch cycles change how the sun warms the earth, producing a "solar forcing". Their cycle lengths vary from 21,000, to 400,000 years, with the strongest one for earth's climate being the 100,000 year cycle. In the absence of humans, what would these cycles be doing now, to earth's temperature?
  1. rapid cooling
  2. rapid warming
  3. very slow cooling (over thousands of years)
  4. very slow warming (over thousands of years)
Answers are locked. Please click here to buy them. 4) The last time atmospheric CO2 was at its current level (~390 ppm), sea level was
  1. about the same as now
  2. about 30 feet lower
  3. 75-120 feet higher
Answers are locked. Please click here to buy them. 5) When climate doubters argue that global warming isn't happening, one approach they use is to:
  1. show a short time series of just a few years, rather than decades
  2. show a temperature record that's regional, not global
  3. focus on anecdotal temperature measurement imperfections to argue that there's a consistent bias
  4. all of the above
Answers are locked. Please click here to buy them. 6) If you want to interpret the global surface temperature data to say that global warming stopped in 1998, during how many times did global warming stop in the 20th century?
  1. none
  2. 2
  3. 7 or more
Answers are locked. Please click here to buy them. 7) When "Mighty oaks from tiny acorns grow", where has most of the oak wood come from?
  1. the oxygen in air
  2. the carbon dioxide in air
  3. water
  4. humus in soil
Answers are locked. Please click here to buy them. 8) Before we humans, the earth has undergone cycles of warming and cooling. This means that...
  1. humans cannot change the earth's climate
  2. natural forces can also cause the climate to change
Answers are locked. Please click here to buy them. 9) As of 2002, roughly what proportion of the historical GHG emissions - that will continue to affect the climate for centuries or longer - has come from the U.S.? Europe? China?
  1. 1/3, 1/4, 1/12
  2. 1/3, 1/3, 1/5
  3. 1/4, 1/4, 1/4
  4. 1/4, 1/2, 1/5
Answers are locked. Please click here to buy them. 10) To have a 75% probability of keeping the temperature rise below 2C, how much of earth's known remaining fossil fuel reserves can we burn?
  1. less than a quarter
  2. about a tenth
  3. 80%
Answers are locked. Please click here to buy them. 11) Under "business as usual" (i.e., no regulations to reduce GHG emissions), about how likely is it that we can keep earth's temperature rise below 2C?
  1. 25%
  2. 10%
  3. 80%
  4. 0%
Answers are locked. Please click here to buy them. 12) Since we started burning fossil fuels with the Industrial Revolution, atmospheric CO2 has increased by:
  1. less than 5%
  2. about 10%
  3. more than 30%
Answers are locked. Please click here to buy them. 13) Other greenhouse gases besides CO2 are...
  1. oxygen and argon
  2. methane, water vapor and nitrous oxide
Answers are locked. Please click here to buy them. 14) Over the last decade, the atmosphere has continued to warm, but more slowly. Does this mean global warming has stopped?
  1. no; the oceans have continued to warm
  2. no; 1998 was an unusual year for well-understood ocean-circulation reasons (El Nino)
  3. no; 10 years isn't a long enough time to be drawing conclusions. If we're going to say that GW stopped now, then we'd have to say that it's stopped numerous times in the past century too - yet it always resumed rising
  4. all of the above
Answers are locked. Please click here to buy them. 15) Carbon dioxide (CO2) is a greenhouse gas. This...
  1. is disputed by scientists
  2. means that it warms the earth like a blanket, keeping it from losing heat to space
  3. gives the sky its color
Answers are locked. Please click here to buy them. 16) Why are we concerned about the measly one degree C of warming we've seen so far?
  1. it's what it portends; this is the predicted signal just starting to emerge from the noise; there's more warming already "in the pipeline
  2. future global temperature rise won't be uniform and risks global climate disruption
  3. look what's happening already, with glaciers, sea ice, & increased weather extremes
  4. all of the above
Answers are locked. Please click here to buy them. 17) Fossil fuels are the carbon-rich remains of...
  1. ancient plants and animals that didn't rot or burn
  2. cosmic dust
  3. chemical reactions of inert matter
Answers are locked. Please click here to buy them. 18) During the last glacial maximum (when glaciers covered much of the earth) about how many degrees F was the earth cooler than today?
  1. 5
  2. 10
  3. 20
Answers are locked. Please click here to buy them. 19) Carbon dioxide (CO2) gets into the air from...
  1. plant and animal respiration
  2. burning or rotting plant matter
  3. volcanos
  4. burning fossil fuels
Answers are locked. Please click here to buy them. 20) Effectively, how long will the CO2 emitted by burning a gallon of gas continue to affect the climate?
  1. days
  2. months
  3. centuries, plus 25% that sticks around forever
Answers are locked. Please click here to buy them. 21) This increase in atmospheric CO2 is:
  1. partly natural, partly due to human activities
  2. almost entirely due to human activities
Answers are locked. Please click here to buy them. 22) CO2 in our atmosphere is a trace gas; its concentration in the air is 387 parts per million, less than a tenth of one percent. If there were no CO2 in the air at all, Eearth's surface would become:
  1. about the same temperature as now
  2. 5 or 10 degrees F colder
  3. "snowball earth", more than 60 degrees F colder and covered in ice
Answers are locked. Please click here to buy them. 23) If we reduce our CO2 emissions by 20%, atmospheric CO2 levels will
  1. decrease by 20%
  2. decrease by 10%
  3. level off
  4. continue to increase
Answers are locked. Please click here to buy them. 24) In the last 50 years, what % of the earth's warming is estimated to be due to human activities?
  1. 10%
  2. 50%
  3. 85-120% (the number can be over 100% if it has to mask a cooling factor)
Answers are locked. Please click here to buy them.

Access options

Get online access or buy a physical book.

Option 1: Online access

Unlock the answers to 24 questions for just $9.99

You'll get immediate access after payment.

Step 1

Enter the email address where you want us to send your order to.



Step 2

Select one of the payment buttons below.