Question 1

A positive feedback mechanism

Accepted Answer

A)  acts to reinforce an initial change. 
B)  acts to weaken or oppose an initial change. 
C)  will cause a positive change. 
D)  will cause a negative change. 
A)  acts to reinforce an initial change. 
B)  acts to weaken or oppose an initial change. 
C)  will cause a positive change. 
D)  will cause a negative change.

Question 2

If the earth were in a warming trend,which of the processes below would most likely act as a negative feedback mechanism?

Accepted Answer

A)  increasing the water vapor content of the air 
B)  increasing the snow cover around the earth 
C)  decreasing the amount of cloud cover around the globe 
D)  increasing the carbon dioxide content of the air 
A)  increasing the water vapor content of the air 
B)  increasing the snow cover around the earth 
C)  decreasing the amount of cloud cover around the globe 
D)  increasing the carbon dioxide content of the air

Question 3

Briefly describe the climatic variations that have occurred since the beginning of the Pleistocene epoch to the present day.

Accepted Answer

The Pleistocene epoch, which began about

Question 4

It now appears that if global temperatures continue to rise,the oceans

Accepted Answer

A)  will increase the amount of CO2 in the atmosphere. 
B)  will reduce the amount of CO2 in the atmosphere. 
C)  could increase or reduce the amount of CO2 in the atmosphere. 
D)  will have no effect on atmospheric CO2 concentrations. 
A)  will increase the amount of CO2 in the atmosphere. 
B)  will reduce the amount of CO2 in the atmosphere. 
C)  could increase or reduce the amount of CO2 in the atmosphere. 
D)  will have no effect on atmospheric CO2 concentrations.

Question 5

Which of the following has been used to reconstruct past climates?

Accepted Answer

A)  analysis of air bubbles trapped in ice 
B)  study of documents describing floods,droughts and crop yields 
C)  the ratio of oxygen 18 to oxygen 16 in the shells of marine organisms 
D)  study of geologic formations 
E)  all of the above 
A)  analysis of air bubbles trapped in ice 
B)  study of documents describing floods,droughts and crop yields 
C)  the ratio of oxygen 18 to oxygen 16 in the shells of marine organisms 
D)  study of geologic formations 
E)  all of the above

A positive feedback mechanism

If the earth were in a warming trend,which of the processes below would most likely act as a negative feedback mechanism?

Briefly describe the climatic variations that have occurred since the beginning of the Pleistocene epoch to the present day.

It now appears that if global temperatures continue to rise,the oceans

Which of the following has been used to reconstruct past climates?

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 and Tornadoes

Hurricanes

Global Climate

Air Pollution

Light, Color, and Atmospheric Optics

Filters

Exam 16: Earths Changing Climate

A positive feedback mechanism

If the earth were in a warming trend,which of the processes below would most likely act as a negative feedback mechanism?

Briefly describe the climatic variations that have occurred since the beginning of the Pleistocene epoch to the present day.

It now appears that if global temperatures continue to rise,the oceans

Which of the following has been used to reconstruct past climates?

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 and Tornadoes

Hurricanes

Global Climate

Air Pollution

Light, Color, and Atmospheric Optics

Filters