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geo directory

Some of these questions must be answered by consulting your textbook which correlates with the video series.  Consult: "Physical Geology -Earth Revealed" by Carlson, Plummer and McGeary; published by McGraw Hill, New York City, NY


  23. Glaciers 
  Many of the world’s most beautiful landscapes were made by glaciers. This program shows how,            explaining glacial formation, structure, movement, and methods of gouging and accumulating earth. The program provides images of glaciers and glacial landforms such as moraines, and discusses how study of glaciers may help us understand ice ages and the greenhouse effect.

Episode 23: Glaciers

What do glaciers leave behind when they retreat?

What is a drumlin?

What is am esker?


Describe how snow is converted to glacial ice.


What part of a glacier moves quickest? What part moves slowest?


What is basal slip?


Why do continental ice sheets flow away from their center?


What is the snowline, and what does it separate?


What are striations?


What is till?

What is stratified drift?

What is an erratic?


What are moraines?

What is a kettle hole?

What is a cirque?

What is an arete?

What is a horn?


Summarize the theories concerning the origin of ice ages.


Why do rivers often run faster during an ice age?


How do atmospheric CO2 levels relate to ice ages?


How long ago did the last ice age end?


How much have atmospheric CO2 levels increased since 1850? Why has this happened?