Question 1

The Bering land bridge allowed human and animal migration to occur from _______________.

Accepted Answer

A) Africa to South America 
B) Australia to Africa 
C) South America to North America 
D) Asia to North America 
E) Africa to Antarctica 
A) Africa to South America 
B) Australia to Africa 
C) South America to North America 
D) Asia to North America 
E) Africa to Antarctica

Question 2

Most of the recent global warming is due to an enhanced greenhouse effect caused by increasing levels of greenhouse gases, such as CO2.

Accepted Answer

A) True 
 B)False

Question 3

How does a positive feedback mechanism differ from a negative feedback mechanism? Is the water vapor-greenhouse feedback considered positive or negative? Explain.

Accepted Answer

A positive feedback mechanism is a proce

Question 4

The most recent North American glaciers reached their maximum thickness and extent between about 26,000 and 20,000 years ago.

Accepted Answer

A) True 
 B)False

Question 5

The northern-latitude warm spell during the current interglacial period, or Holocene epoch, is sometimes called the ____________________.

Accepted Answer

The answer of The northern-latitude warm spell during the current...

Question 6

Climate models predict that, by the end of this century, increasing concentrations of greenhouse gases will result in an additional global warming that could be as much as several degrees Celsius.

Accepted Answer

A) True 
 B)False

Question 7

Global temperatures probably have not varied by more than ____ during the past 10,000 years.

Accepted Answer

A) 0.5 degree Celsius 
B) 1 degree Celsius 
C) 2 degrees Celsius 
D) 4 degrees Celsius 
E) 5 degrees Celsius 
A) 0.5 degree Celsius 
B) 1 degree Celsius 
C) 2 degrees Celsius 
D) 4 degrees Celsius 
E) 5 degrees Celsius

Question 8

Everything else being equal, the more CO2 in the atmosphere, the ____________________the surface air.

Accepted Answer

Question 9

Describe what the Maunder minimum was, and how it may have related to the Little Ice Age.

Accepted Answer

Sunspots occur in cycles, with the numbe

Question 10

Explain why it is important not to base opinions of global warming on a specific weather event, such as an extremely cold winter in North America. Provide examples to support your answer.

Accepted Answer

Global warming in any given year is smal

Question 11

The____________________ provided by extra CO2 and other greenhouse gases has increased by about 3 W/m2 over the past several hundred years, with the most rapid increase occurring over the last several decades.

Accepted Answer

radiative

Question 12

The average global surface air temperature since the since the late 1800s has risen by more than ____.

Accepted Answer

A) 0.2 degree Celsius 
B) 0.4 degree Celsius 
C) 0.5 degree Celsius 
D) 0.8 degree Celsius 
E) 1.2 degrees Celsius 
A) 0.2 degree Celsius 
B) 0.4 degree Celsius 
C) 0.5 degree Celsius 
D) 0.8 degree Celsius 
E) 1.2 degrees Celsius

Question 13

The average global surface air temperature since the late 1800s has risen by more than 8 degrees Celsius.

Accepted Answer

A) True 
 B)False

Question 14

If the Earth were in a cooling trend, which process below would most likely act as a positive feedback mechanism?

Accepted Answer

A) Increasing the snow cover around the Earth 
B) Increasing the water vapor content of the air 
C) Decreasing the amount of low stratified cloud cover around the globe 
D) Increasing the carbon dioxide content of the air 
E) Decreasing snow cover in middle and high latitudes 
A) Increasing the snow cover around the Earth 
B) Increasing the water vapor content of the air 
C) Decreasing the amount of low stratified cloud cover around the globe 
D) Increasing the carbon dioxide content of the air 
E) Decreasing snow cover in middle and high latitudes

Question 15

Most of the ice on Earth is in the ____ ice sheets.

Accepted Answer

A) Greenland and Antarctic 
B) Greenland and Arctic 
C) alpine and Arctic 
D) Siberian 
E) North American 
A) Greenland and Antarctic 
B) Greenland and Arctic 
C) alpine and Arctic 
D) Siberian 
E) North American

Question 16

The study of annual growth rings of trees is known as _____________.

Accepted Answer

A) herbchronology 
B) dendrochronology 
C) paleoclimatology 
D) sclerochronology 
E) pollen in deep ice caves 
A) herbchronology 
B) dendrochronology 
C) paleoclimatology 
D) sclerochronology 
E) pollen in deep ice caves

Question 17

If global temperatures were to rise enough so that all of the world's glaciers melted, the average sea level would rise about ____________________ m.

Accepted Answer

sixty-five

Question 18

The continental ice sheets over North America disappeared ____.

Accepted Answer

A) between about 9,000 and 6,000 years ago 
B) approximately 14,700 years ago 
C) about 2.5 million years ago 
D) between about 5,000 and 4,000 years ago 
E) about 1300 years ago 
A) between about 9,000 and 6,000 years ago 
B) approximately 14,700 years ago 
C) about 2.5 million years ago 
D) between about 5,000 and 4,000 years ago 
E) about 1300 years ago

Question 19

The higher the ratio of oxygen-18 to oxygen-16 in the shells of organisms that lived in the sea during the geologic past, the ____ the climate at that time.

Accepted Answer

A) colder 
B) warmer 
C) wetter 
D) drier 
E) more humid 
A) colder 
B) warmer 
C) wetter 
D) drier 
E) more humid

Question 20

The water vapor-greenhouse feedback represents a ____ feedback mechanism.

Accepted Answer

A) neutral 
B) positive 
C) directional 
D) negative 
E) balanced 
A) neutral 
B) positive 
C) directional 
D) negative 
E) balanced

The Bering land bridge allowed human and animal migration to occur from _______________.

Most of the recent global warming is due to an enhanced greenhouse effect caused by increasing levels of greenhouse gases, such as CO₂.

How does a positive feedback mechanism differ from a negative feedback mechanism? Is the water vapor-greenhouse feedback considered positive or negative? Explain.

The most recent North American glaciers reached their maximum thickness and extent between about 26,000 and 20,000 years ago.

The northern-latitude warm spell during the current interglacial period, or Holocene epoch, is sometimes called the ____________________.

Climate models predict that, by the end of this century, increasing concentrations of greenhouse gases will result in an additional global warming that could be as much as several degrees Celsius.

Global temperatures probably have not varied by more than ____ during the past 10,000 years.

Everything else being equal, the more CO₂ in the atmosphere, the ____________________the surface air.

Describe what the Maunder minimum was, and how it may have related to the Little Ice Age.

Explain why it is important not to base opinions of global warming on a specific weather event, such as an extremely cold winter in North America. Provide examples to support your answer.

The____________________ provided by extra CO₂ and other greenhouse gases has increased by about 3 W/m² over the past several hundred years, with the most rapid increase occurring over the last several decades.

The average global surface air temperature since the since the late 1800s has risen by more than ____.

The average global surface air temperature since the late 1800s has risen by more than 8 degrees Celsius.

If the Earth were in a cooling trend, which process below would most likely act as a positive feedback mechanism?

Most of the ice on Earth is in the ____ ice sheets.

The study of annual growth rings of trees is known as _____________.

If global temperatures were to rise enough so that all of the world's glaciers melted, the average sea level would rise about ____________________ m.

The continental ice sheets over North America disappeared ____.

The higher the ratio of oxygen-18 to oxygen-16 in the shells of organisms that lived in the sea during the geologic past, the ____ the climate at that time.

The water vapor-greenhouse feedback represents a ____ feedback mechanism.

Earth and Its Atmosphere

Energy: Warming Earth and the Atmosphere

Seasonal and Daily Temperatures

Atmospheric Humidity

Condensation: Dew, Fog, and Clouds

Stability and Cloud Development

Precipitation

Air Pressure and Winds

Wind: Small-Scale and Local Systems

Wind: Global Systems

Air Masses and Fronts

Middle-Latitude Cyclones

Weather Forecasting

Thunderstorms

Tornadoes

Hurricanes

Earths Changing Climate

Air Pollution

Light, Color and Atmospheric Optics

Filters

Exam 18: Global Climate

The Bering land bridge allowed human and animal migration to occur from _______________.

Most of the recent global warming is due to an enhanced greenhouse effect caused by increasing levels of greenhouse gases, such as CO2.

How does a positive feedback mechanism differ from a negative feedback mechanism? Is the water vapor-greenhouse feedback considered positive or negative? Explain.

The most recent North American glaciers reached their maximum thickness and extent between about 26,000 and 20,000 years ago.

The northern-latitude warm spell during the current interglacial period, or Holocene epoch, is sometimes called the ____________________.

Climate models predict that, by the end of this century, increasing concentrations of greenhouse gases will result in an additional global warming that could be as much as several degrees Celsius.

Global temperatures probably have not varied by more than ____ during the past 10,000 years.

Everything else being equal, the more CO2 in the atmosphere, the ____________________the surface air.

Describe what the Maunder minimum was, and how it may have related to the Little Ice Age.

Explain why it is important not to base opinions of global warming on a specific weather event, such as an extremely cold winter in North America. Provide examples to support your answer.

The____________________ provided by extra CO2 and other greenhouse gases has increased by about 3 W/m2 over the past several hundred years, with the most rapid increase occurring over the last several decades.

The average global surface air temperature since the since the late 1800s has risen by more than ____.

The average global surface air temperature since the late 1800s has risen by more than 8 degrees Celsius.

If the Earth were in a cooling trend, which process below would most likely act as a positive feedback mechanism?

Most of the ice on Earth is in the ____ ice sheets.

The study of annual growth rings of trees is known as _____________.

If global temperatures were to rise enough so that all of the world's glaciers melted, the average sea level would rise about ____________________ m.

The continental ice sheets over North America disappeared ____.

The higher the ratio of oxygen-18 to oxygen-16 in the shells of organisms that lived in the sea during the geologic past, the ____ the climate at that time.

The water vapor-greenhouse feedback represents a ____ feedback mechanism.

Earth and Its Atmosphere

Energy: Warming Earth and the Atmosphere

Seasonal and Daily Temperatures

Atmospheric Humidity

Condensation: Dew, Fog, and Clouds

Stability and Cloud Development

Precipitation

Air Pressure and Winds

Wind: Small-Scale and Local Systems

Wind: Global Systems

Air Masses and Fronts

Middle-Latitude Cyclones

Weather Forecasting

Thunderstorms

Tornadoes

Hurricanes

Earths Changing Climate

Air Pollution

Light, Color and Atmospheric Optics

Filters

Most of the recent global warming is due to an enhanced greenhouse effect caused by increasing levels of greenhouse gases, such as CO₂.

Everything else being equal, the more CO₂ in the atmosphere, the ____________________the surface air.

The____________________ provided by extra CO₂ and other greenhouse gases has increased by about 3 W/m² over the past several hundred years, with the most rapid increase occurring over the last several decades.