Self Quiz: Greenhouse Effect

Given that CO2 is produced by cellular respiration, why does the amount of CO2 in the atmosphere remain relatively constant? (When answering this question, exclude the impact of human activities on atmospheric CO2.)

• CO2 is converted in photosynthesis to glucose.

• CO2 is split apart during photosynthesis.

• CO2 mostly forms carbonate rocks.

• CO2 is trapped in dead organisms' bodies.

What is one likely effect of having 0% atmospheric carbon dioxide?

• an increase in biodiversity

• no change in the earth’s temperature

• the earth’s temperature would increase

• the earth’s temperature would decrease

Which of the following pictures accurately represents the natural greenhouse effect?

• A

• B

• C

• D

Examine the Data above. All are possible explanations for the increase in atmospheric carbon dioxide from 1860 to 2010 EXCEPT:

• increase in population size

• increase in industrialization

• increase in carbon sequestration

• increase in deforestation

A scientist sets out to determine the amount of carbon dioxide released for each kilometre travelled by a petrol engine vehicle and a diesel engine vehicle. The table below presents the data

Which engine releases less carbon dioxide when travelling 100 kilometres?

• Petrol Engine

• Diesel Engine

Wood and fossil fuels each release carbon dioxide

(CO2) when they are burned, yet

environmental scientists are more concerned about the carbon dioxide added to the

atmosphere during the combustion of fossil fuels. Why?

• Wood is burned in the open, so the CO2 is less concentrated

• CO2 released from fossil fuels cannot be utilized during photosynthesis

• Burning wood releases a gas which reduces the

  residence time of CO2 in the lower and middle atmosphere

• Fossil fuels release CO 2 which had been locked out of the atmosphere for millions of years

Which of the following best explains the temperatures

observed at Earth’s surface?

• Without a greenhouse effect, energy absorbed at Earth’s surface is lost to space

• With a greenhouse effect, the upper atmosphere reflects away all the Sun’s energy

• Without a greenhouse effect, a ll the Sun’s energy is absorbed

  deep into Earth’s crust.

• With a greenhouse effect,

  heat flows from the cold atmosphere to the warm surface