Deck 17: Global Change

Question 1

What would happen to ozone levels if global volcanic activity increased?

A) Increase
B) Decrease
C) No change

Answer 1

Decrease

Question 2

The following diagram illustrates the Carbon Cycle. Each arrow represents the transfer of carbon from one component of the Earth system to another. For example, arrow 1 represents the transfer of carbon from the biosphere to the atmosphere. Match the lettered answers below to the number on the diagram.


-Match the lettered answers to number 1 on the diagram.

A) Photosynthesis
B) Weathering of limestone
C) Respiration
D) Rock formation
E) Fossil fuel formation

Answer 2

Respiration

Question 3

The following diagram illustrates the Carbon Cycle. Each arrow represents the transfer of carbon from one component of the Earth system to another. For example, arrow 1 represents the transfer of carbon from the biosphere to the atmosphere. Match the lettered answers below to the number on the diagram.


-Match the lettered answers to number 2 on the diagram.

A) Photosynthesis
B) Decay
C) Respiration
D) Rock formation
E) Fossil fuel formation

Answer 3

Photosynthesis

Question 4

The following diagram illustrates the Carbon Cycle. Each arrow represents the transfer of carbon from one component of the Earth system to another. For example, arrow 1 represents the transfer of carbon from the biosphere to the atmosphere. Match the lettered answers below to the number on the diagram.


-Match the lettered answers to number 3 on the diagram.

A) Photosynthesis
B) Decay
C) Respiration
D) Volcanic eruption
E) Fossil fuel formation

Question 5

The following diagram illustrates the Carbon Cycle. Each arrow represents the transfer of carbon from one component of the Earth system to another. For example, arrow 1 represents the transfer of carbon from the biosphere to the atmosphere. Match the lettered answers below to the number on the diagram.


-Match the lettered answers to number 5 on the diagram.

A) Photosynthesis
B) Decay
C) Respiration
D) Volcanic eruption
E) Fossil fuel formation

Question 6

The following diagram illustrates the Carbon Cycle. Each arrow represents the transfer of carbon from one component of the Earth system to another. For example, arrow 1 represents the transfer of carbon from the biosphere to the atmosphere. Match the lettered answers below to the number on the diagram.


-Match the lettered answers to number 8 on the diagram.

A) Photosynthesis
B) Decay
C) Respiration
D) Rock formation
E) Fossil fuel formation

Question 7

The following diagram illustrates the Carbon Cycle. Each arrow represents the transfer of carbon from one component of the Earth system to another. For example, arrow 1 represents the transfer of carbon from the biosphere to the atmosphere. Match the lettered answers below to the number on the diagram.


-Match the lettered answers to number 9 on the diagram.

A) Photosynthesis
B) Weathering
C) Respiration
D) Shell formation
E) Fossil fuel formation

Question 8

Suppose the global community came to an agreement to reduce CO₂ emissions that had the same impact as the Montreal Protocol had for CFCs. Predict how CO₂ levels would change over the next several decades.

A) CO₂ levels would increase significantly.
B) CO₂ levels would decrease significantly.
C) CO₂ levels would stay about the same.

Question 9

What is ozone?

A) O
B) O₂
C) O₃
D) O₄

Question 10

Which one of the following characteristics does not contribute to ozone depletion over Antarctica?

A) Polar vortex
B) Stratospheric clouds
C) Temperatures above -80° C
D) Higher concentrations of CFCs than elsewhere

Question 11

What has happened to average global temperatures over the last 100 years?

A) Remained essentially constant
B) Increased about 0.5° C
C) Decreased about 0.5° C

Question 12

Which earth system component adds carbon to the atmosphere?

A) Hydrosphere
B) Geosphere
C) Biosphere
D) All of the choices are correct.

Question 13

Which earth system component removes carbon from the atmosphere?

A) Hydrosphere
B) Geosphere
C) Biosphere
D) All of the choices are correct.

Question 14

Suppose you have a choice of fuels to use to heat your home. Which CO₂ source produces the least carbon per unit of energy?

A) Oil
B) Natural gas
C) Coal

Question 15

Suppose each of the following compounds were released into the atmosphere in equal amounts. Which greenhouse gas would cause the most warming?

A) Nitrous oxide
B) Methane
C) Carbon dioxide
D) Same quantity implies no difference

Question 16

What do climate models predict will happen to average temperatures in the northern hemisphere over the next 100 years?

A) Increase
B) Decrease
C) Stay about the same

Question 17

What do climate models predict will happen to average temperatures in the southern hemisphere over the next 100 years?

A) Increase
B) Decrease
C) Stay about the same

Question 18

Why has the rate of global warming been slower than expected over parts of the Northern hemisphere?

A) Steps were taken to reduce greenhouse gas emissions
B) Deforestation has been reduced
C) The size of the ozone "hole" has increased
D) Air pollution is centered over developed nations

Question 19

Which statement about the global carbon cycle is most accurate?

A) More carbon enters the atmosphere than leaves the atmosphere.
B) Less carbon enters the atmosphere than leaves the atmosphere.
C) Carbon enters and leaves the atmosphere in equal amounts.

Question 20

Where is carbon stored in the oceans?

A) Most of it precipitates out as limestone
B) Most of it is trapped in sea animals
C) Most of it is dissolved in the water

Question 21

Which of the following is a carbon sink?

A) Living animal
B) Decaying animal
C) Living plant
D) Decaying plant

Question 22

Where is most carbon stored in the geosphere?

A) Fossil fuel deposits
B) Limestone deposits
C) Soils

Question 23

What type of climate change forcing is increased solar output?

A) Positive
B) Negative
C) Neutral

Question 24

What type of climate change forcing is a volcanic aerosol?

A) Positive
B) Negative
C) Neutral

Question 25

There is no ozone in the region referred to as the "ozone hole."

Question 26

Photolysis breaks down CFCs in the atmosphere.

Question 27

There are no natural sources of atmospheric chlorine.

Question 28

CFC concentrations are being reduced 98% globally so there is no longer any thinning over Antarctica.

Question 29

Decaying plant matter removes carbon from the atmosphere.

Question 30

Annual plant growth cycles can be observed in global CO₂ data.

Question 31

Atmospheric levels of CO₂ are higher than have been documented in the past 500,000 years.

Question 32

The Earth can take care of the CO₂ problem by itself on human timescales.

Question 33

Climate models predict global warming will increase temperatures everywhere on Earth.

Question 34

Global precipitation has increased as temperatures increased over the last century.

Question 35

Global sea levels have increased 1-2 meters over the last century.

Question 36

Anthropogenic carbon dioxide is produced by vegetation.

Question 37

All of the anthropogenic carbon dioxide remains in the atmosphere.

Question 38

Global concentrations of carbon dioxide have increased by ~30% over the last 150 years.

Question 39

Carbon dioxide levels in the atmosphere first began to rapidly increase above natural levels around 1950.