Question 1

A warm spell called the Bölling-Alleröd period occurred about 6,000 years ago.​

Accepted Answer

A) True 
 B)False  False

Question 2

Explain why the chemical weathering-CO₂ feedback is a negative feedback on Earth's climate system.

Accepted Answer

Chemical weathering is a process by which carbon dioxide is removed from the atmosphere as silicate minerals in rocks decompose in the presence of moisture.In this feedback,as chemical weathering increases,the amount of CO₂ in the atmosphere decreases.The reason for this situation is that chemical weathering (and the removal of CO₂ from the atmosphere)will generally take place more rapidly on a warmer planet,as chemical reactions speed up and greater evaporation from the oceans leads to more precipitation over the continents.As CO₂ leaves the atmosphere more quickly,CO₂ levels drop and Earth's climate begins to cool and stabilize.As temperatures dip,less water evaporates from the oceans,chemical weathering decreases,and the removal of CO₂ from the atmosphere diminishes.

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 process which is reinforced by other processes.A negative feedback mechanism is a process which is weakened by interactions among other variables.  The water vapor-temperature increase process is a positive feedback mechanism.Assuming that the Earth-atmosphere system has been disturbed to the point that Earth has entered a slow warming trend,over the years the temperature slowly rises,and water from the oceans rapidly evaporates into the warmer air.The increased quantity of water vapor absorbs more of Earth's infrared energy,thus strengthening the atmospheric greenhouse effect.This strengthening of the greenhouse effect raises the air temperature even more,which,in turn,allows more water vapor to evaporate into the atmosphere.The greenhouse effect becomes even stronger,and the air temperature rises even more.

Question 4

When an oceanic plate encounters a lighter continental plate,it responds by diving under it,in a process called ____________________.

Accepted Answer

The answer of When an oceanic plate encounters a lighter...

Question 5

What is radiative equilibrium and how is it influenced by greenhouse gases?​

Accepted Answer

When the rate of the incoming solar ener

Question 6

According to the 2013 Fifth Assessment Report of the IPCC,the primary source of the increased atmospheric concentration of carbon dioxide since the pre-industrial period results from ____________________ use,with land-use change providing another significant but smaller contribution.

Accepted Answer

The answer of According to the 2013 Fifth Assessment Report...

Question 7

The water vapor-greenhouse feedback represents a positive feedback mechanism.​

Accepted Answer

A) True 
 B)False

Question 8

As oceans cool,they remove more CO₂ from the atmosphere​.

Accepted Answer

A) True 
 B)False

Question 9

The ____________________ ratios of calcium carbonate shells have provided information about the sequence of glacier advances.

Accepted Answer

oxygen-iso

Question 10

The slow shifting of the continents and the ocean floors is explained in the widely accepted theory of ____________________.

Accepted Answer

The answer of The slow shifting of the continents and...

Question 11

The most recent glacial period,called the ____________________,began about 2.5 million years ago.

Accepted Answer

Ice Age
 P

Question 12

An increase of 0.85°C is insignificant when compared with temperature changes over thousands of years.​

Accepted Answer

A) True 
 B)False

Question 13

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 14

Particles that reduce the amount of sunlight reaching Earth's surface tend to cause ____ of the surface air during the ____.

Accepted Answer

A) a net cooling;day 
B) a net warming;night 
C) ​less precipitation;day 
D) ​less precipitation;night 
E) ​greater humidity;day 
A) a net cooling;day 
B) a net warming;night 
C) ​less precipitation;day 
D) ​less precipitation;night 
E) ​greater humidity;day

Question 15

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 number

Question 16

Changes in the composition of the atmosphere that cause the Earth's climate to change are one example of a(n)____________________ cause of climate change.

Accepted Answer

The answer of Changes in the composition of the atmosphere...

Question 17

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 18

Sunspots are huge magnetic storms on the Sun that show up as warmer regions on the Sun's surface.​

Accepted Answer

A) True 
 B)False

Question 19

Presently glaciers cover ____ of Earth's surface.

Accepted Answer

A) less than 10 percent 
B) less than 1 percent 
C) ​more than 25 percent 
D) ​approximately 15 percent 
E) ​approximately 35 percent 
A) less than 10 percent 
B) less than 1 percent 
C) ​more than 25 percent 
D) ​approximately 15 percent 
E) ​approximately 35 percent

Question 20

The fact that we find glacial features near sea level in Africa today,is explained by ____.

Accepted Answer

A) the Theory of Plate Tectonics 
B) Milankovitch theory 
C) ​the precession of Earth's axis 
D) ​the eccentricity of Earth's orbit 
E) ​changes in the obliquity of Earth's orbit 
A) the Theory of Plate Tectonics 
B) Milankovitch theory 
C) ​the precession of Earth's axis 
D) ​the eccentricity of Earth's orbit 
E) ​changes in the obliquity of Earth's orbit

A warm spell called the Bölling-Alleröd period occurred about 6,000 years ago.

Explain why the chemical weathering-CO₂ feedback is a negative feedback on Earth's climate system.

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

When an oceanic plate encounters a lighter continental plate,it responds by diving under it,in a process called ____________________.

What is radiative equilibrium and how is it influenced by greenhouse gases?

According to the 2013 Fifth Assessment Report of the IPCC,the primary source of the increased atmospheric concentration of carbon dioxide since the pre-industrial period results from ____________________ use,with land-use change providing another significant but smaller contribution.

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

As oceans cool,they remove more CO₂ from the atmosphere.

The ____________________ ratios of calcium carbonate shells have provided information about the sequence of glacier advances.

The slow shifting of the continents and the ocean floors is explained in the widely accepted theory of ____________________.

The most recent glacial period,called the ____________________,began about 2.5 million years ago.

An increase of 0.85°C is insignificant when compared with temperature changes over thousands of years.

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.

Particles that reduce the amount of sunlight reaching Earth's surface tend to cause of the surface air during the .

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

Changes in the composition of the atmosphere that cause the Earth's climate to change are one example of a(n)____________________ cause of climate change.

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.

Sunspots are huge magnetic storms on the Sun that show up as warmer regions on the Sun's surface.

Presently glaciers cover ____ of Earth's surface.

The fact that we find glacial features near sea level in Africa today,is explained by ____.

Earth and Its Atmosphere

Energy - Warming the 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

A warm spell called the Bölling-Alleröd period occurred about 6,000 years ago.​

Explain why the chemical weathering-CO₂ feedback is a negative feedback on Earth's climate system.

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

When an oceanic plate encounters a lighter continental plate,it responds by diving under it,in a process called ____________________.

What is radiative equilibrium and how is it influenced by greenhouse gases?​

According to the 2013 Fifth Assessment Report of the IPCC,the primary source of the increased atmospheric concentration of carbon dioxide since the pre-industrial period results from ____________________ use,with land-use change providing another significant but smaller contribution.

The water vapor-greenhouse feedback represents a positive feedback mechanism.​

As oceans cool,they remove more CO₂ from the atmosphere​.

The ____________________ ratios of calcium carbonate shells have provided information about the sequence of glacier advances.

The slow shifting of the continents and the ocean floors is explained in the widely accepted theory of ____________________.

The most recent glacial period,called the ____________________,began about 2.5 million years ago.

An increase of 0.85°C is insignificant when compared with temperature changes over thousands of years.​

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.​

Particles that reduce the amount of sunlight reaching Earth's surface tend to cause ____ of the surface air during the ____.

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

Changes in the composition of the atmosphere that cause the Earth's climate to change are one example of a(n)____________________ cause of climate change.

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.

Sunspots are huge magnetic storms on the Sun that show up as warmer regions on the Sun's surface.​

Presently glaciers cover ____ of Earth's surface.

The fact that we find glacial features near sea level in Africa today,is explained by ____.

Earth and Its Atmosphere

Energy - Warming the 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

A warm spell called the Bölling-Alleröd period occurred about 6,000 years ago.

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

What is radiative equilibrium and how is it influenced by greenhouse gases?

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

As oceans cool,they remove more CO₂ from the atmosphere.

An increase of 0.85°C is insignificant when compared with temperature changes over thousands of years.

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.

Particles that reduce the amount of sunlight reaching Earth's surface tend to cause of the surface air during the .

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

Sunspots are huge magnetic storms on the Sun that show up as warmer regions on the Sun's surface.