Question 1

What are some examples of positive and negative climate feedback loops?

Accepted Answer

Answers will vary.An example of a positive feedback loop may be: As air temperatures increase,evaporation increases.Warmer temperatures also increase the capacity to absorb water vapour.More water vapour in the atmosphere accelerates the greenhouse effect.As temperatures increase further,more water vapour can enter the atmosphere,causing temperatures to increase even more.An example of a negative feedback loop may be: As air temperatures increase,evaporation increases,leading to more condensation and cloud formation.Low,thick cloud cover increases the albedo of the atmosphere,thereby having a cooling effect on Earth.

Question 2

The physical evidence for global climate change is limited,based primarily on conjecture and indirect evidence.

Accepted Answer

A) True 
 B)False  False

Question 3

Which is likely the world's largest reserve of carbon-based fuel?

Accepted Answer

A) Coal. 
B) Oil. 
C) Methane hydrates. 
D) Shale gas. 
A) Coal. 
B) Oil. 
C) Methane hydrates. 
D) Shale gas. C

Question 4

Which of the following is an indicator of current climatic warming?

Accepted Answer

A) Decreased tropospheric,land,and ocean surface temperatures. 
B) Decreases in relative humidity. 
C) Melting glacial ice and sea ice. 
D) Falling sea levels. 
A) Decreased tropospheric,land,and ocean surface temperatures. 
B) Decreases in relative humidity. 
C) Melting glacial ice and sea ice. 
D) Falling sea levels.

Question 5

The last glacial maximum (LGM)occurred approximately how many years ago?

Accepted Answer

A) 10 000. 
B) 20 000. 
C) 50 000. 
D) 110 000. 
A) 10 000. 
B) 20 000. 
C) 50 000. 
D) 110 000.

Question 6

Which is the legally binding international agreement to reduce greenhouse gas emissions?

Accepted Answer

A) Montreal Protocol. 
B) Kyoto Protocol. 
C) CITES. 
D) ICRW. 
A) Montreal Protocol. 
B) Kyoto Protocol. 
C) CITES. 
D) ICRW.

Question 7

Which of the following correctly pairs what scientists use to study past climates with what scientists use to reconstruct climates that extend back further than our present instrumentation allows?

Accepted Answer

A) Proxy methods; climate proxies. 
B) Direct measurements; historical records. 
C) Indirect evidence; conjecture. 
D) Computer models; algorithms. 
A) Proxy methods; climate proxies. 
B) Direct measurements; historical records. 
C) Indirect evidence; conjecture. 
D) Computer models; algorithms.

Question 8

Present atmospheric methane (CH4)concentrations are at approximately how many ppb?

Accepted Answer

A) 750. 
B) 1000. 
C) 1500. 
D) 1800. 
A) 750. 
B) 1000. 
C) 1500. 
D) 1800.

Question 9

Which of the following is not a primary factor contributing to sea-level rise?

Accepted Answer

A) Melting of glaciers. 
B) Melting of ice sheets. 
C) Melting of sea ice. 
D) Thermal expansion of seawater. 
A) Melting of glaciers. 
B) Melting of ice sheets. 
C) Melting of sea ice. 
D) Thermal expansion of seawater.

Question 10

Which of the following has a negative radiative forcing (i.e.cools the planet)?

Accepted Answer

A) Carbon dioxide (CO2). 
B) Nitrous oxides (N2O). 
C) Stratospheric ozone (O3). 
D) Methane (CH4). 
A) Carbon dioxide (CO2). 
B) Nitrous oxides (N2O). 
C) Stratospheric ozone (O3). 
D) Methane (CH4).

Question 11

During the last century,what happened to sea level?

Accepted Answer

A) It dropped 3 to 5 cm. 
B) It remained fairly constant,though some areas (such as the Atlantic coast)experienced moderate rises. 
C) It rose 30 to 46 cm. 
D) It rose 17 to 21 cm. 
A) It dropped 3 to 5 cm. 
B) It remained fairly constant,though some areas (such as the Atlantic coast)experienced moderate rises. 
C) It rose 30 to 46 cm. 
D) It rose 17 to 21 cm.

Question 12

The climate of Earth cycles between warmer and colder periods.

Accepted Answer

A) True 
 B)False

Question 13

Carbon dioxide (CO2)is the most abundant natural greenhouse gas.

Accepted Answer

A) True 
 B)False

Question 14

To study past climates,scientists use direct measurements.

Accepted Answer

A) True 
 B)False

Question 15

For how many years past do ocean sediment cores provide a climate record?

Accepted Answer

A) 800 000. 
B) 2 million. 
C) 10 million. 
D) 70 million. 
A) 800 000. 
B) 2 million. 
C) 10 million. 
D) 70 million.

Question 16

Earth's axial tilt varies from 21.5° to 24.5° during a 41 000 year period.

Accepted Answer

A) True 
 B)False

Question 17

Sea level is rising more quickly on the east coast of North America than on the west coast.

Accepted Answer

A) True 
 B)False

Question 18

More-developed countries (MDCs)currently emit the greatest amount of greenhouse gases per capita.

Accepted Answer

A) True 
 B)False

Question 19

The Younger Dryas refers to which of the following?

Accepted Answer

A) An interglacial period,characterized by a general warming trend,lasting since the last glacial maximum (LGM)to the present. 
B) A brief return to near-glacial conditions during the transition period from the last glacial period to the present interglacial period. 
C) A 400 year,from A.D.800 to 1200,period characterized by warmer than normal conditions in the North Atlantic region (e.g.Greenland and Iceland). 
D) A global cooling episode,lasting from approximately A.D.1250 to 1850. 
A) An interglacial period,characterized by a general warming trend,lasting since the last glacial maximum (LGM)to the present. 
B) A brief return to near-glacial conditions during the transition period from the last glacial period to the present interglacial period. 
C) A 400 year,from A.D.800 to 1200,period characterized by warmer than normal conditions in the North Atlantic region (e.g.Greenland and Iceland). 
D) A global cooling episode,lasting from approximately A.D.1250 to 1850.

Question 20

Describe methods that individuals and communities are taking to mitigate against climate change.

Accepted Answer

Answers will vary,but may include not pr

What are some examples of positive and negative climate feedback loops?

The physical evidence for global climate change is limited,based primarily on conjecture and indirect evidence.

Which is likely the world's largest reserve of carbon-based fuel?

Which of the following is an indicator of current climatic warming?

The last glacial maximum (LGM)occurred approximately how many years ago?

Which is the legally binding international agreement to reduce greenhouse gas emissions?

Which of the following correctly pairs what scientists use to study past climates with what scientists use to reconstruct climates that extend back further than our present instrumentation allows?

Present atmospheric methane (CH4)concentrations are at approximately how many ppb?

Which of the following is not a primary factor contributing to sea-level rise?

Which of the following has a negative radiative forcing (i.e.cools the planet)?

During the last century,what happened to sea level?

The climate of Earth cycles between warmer and colder periods.

Carbon dioxide (CO2)is the most abundant natural greenhouse gas.

To study past climates,scientists use direct measurements.

For how many years past do ocean sediment cores provide a climate record?

Earth's axial tilt varies from 21.5° to 24.5° during a 41 000 year period.

Sea level is rising more quickly on the east coast of North America than on the west coast.

More-developed countries (MDCs)currently emit the greatest amount of greenhouse gases per capita.

The Younger Dryas refers to which of the following?

Describe methods that individuals and communities are taking to mitigate against climate change.

Essentials of Geography

Solar Energy to Earth and the Seasons

Earths Modern Atmosphere

Atmosphere and Surface Energy Balances

Global Temperatures

Atmospheric and Oceanic Circulations

Water and Atmospheric Moisture

Weather

Water Resources

Global Climate Systems

The Dynamic Planet

Tectonics, earthquakes, and Volcanism

Weathering, karst Landscapes, and Mass Movement

River Systems

Oceans, coastal Processes, and Wind Processes

Glacial and Periglacial Landscapes

The Geography of Soils

Ecosystem Essentials

Terrestrial Biomes

Filters

Exam 11: Climate Change

What are some examples of positive and negative climate feedback loops?

The physical evidence for global climate change is limited,based primarily on conjecture and indirect evidence.

Which is likely the world's largest reserve of carbon-based fuel?

Which of the following is an indicator of current climatic warming?

The last glacial maximum (LGM)occurred approximately how many years ago?

Which is the legally binding international agreement to reduce greenhouse gas emissions?

Which of the following correctly pairs what scientists use to study past climates with what scientists use to reconstruct climates that extend back further than our present instrumentation allows?

Present atmospheric methane (CH4)concentrations are at approximately how many ppb?

Which of the following is not a primary factor contributing to sea-level rise?

Which of the following has a negative radiative forcing (i.e.cools the planet)?

During the last century,what happened to sea level?

The climate of Earth cycles between warmer and colder periods.

Carbon dioxide (CO2)is the most abundant natural greenhouse gas.

To study past climates,scientists use direct measurements.

For how many years past do ocean sediment cores provide a climate record?

Earth's axial tilt varies from 21.5° to 24.5° during a 41 000 year period.

Sea level is rising more quickly on the east coast of North America than on the west coast.

More-developed countries (MDCs)currently emit the greatest amount of greenhouse gases per capita.

The Younger Dryas refers to which of the following?

Describe methods that individuals and communities are taking to mitigate against climate change.

Essentials of Geography

Solar Energy to Earth and the Seasons

Earths Modern Atmosphere

Atmosphere and Surface Energy Balances

Global Temperatures

Atmospheric and Oceanic Circulations

Water and Atmospheric Moisture

Weather

Water Resources

Global Climate Systems

The Dynamic Planet

Tectonics, earthquakes, and Volcanism

Weathering, karst Landscapes, and Mass Movement

River Systems

Oceans, coastal Processes, and Wind Processes

Glacial and Periglacial Landscapes

The Geography of Soils

Ecosystem Essentials

Terrestrial Biomes

Filters