« previous next »

Author Question: How does ground moraine form? Relate the formation of ground moraine to changes in climate. What ... (Read 35 times)

NClaborn

  • Hero Member
  • *****
  • Posts: 560
on: Jul 15, 2018
How does ground moraine form? Relate the formation of ground moraine to changes in climate.
 
  What will be an ideal response?

Question 2

North American glaciations used to be described in four episodes. However, two of those episode names, the Kansan and Nebraskan, are no longer used. What evidence did scientists use to redefine the glacial history on the North American continent?
 
  What will be an ideal response?


voltaire123

  • Sr. Member
  • ****
  • Posts: 301
Reply #1 on: Jul 15, 2018
Answer to Question 1

Answer: Ground moraines form when ablation exceeds the nourishment of a glacier. The glacial ice is still flowing forward, but the terminus is retreating, so the sediment melting out of the ice form is deposited on the ground as the terminus retreats, creating an undulating plain strewn with rocks. This process relates to climate change because glacial retreat generally indicates a warming climate.

Answer to Question 2

Answer: Ocean cores show evidence for up to 20 glaciations, not simply 4.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Relatively simple changes in Hox genes control limb formation in tetrapods. Relatively simple changes in Hox genes control limb formation in tetrapods.
Our species’ ability to form social bonds and be loyal and cooperative within our “tribe” may ... Our species’ ability to form social bonds and be loyal and cooperative within our “tribe” may ...
Instructions for Completing the CMS-1500 (02/12) Claim Form Continued Instructions for Completing the CMS-1500 (02/12) Claim Form Continued
Instructions for Completing the CMS-1500 (02/12) Claim Form Continued Instructions for Completing the CMS-1500 (02/12) Claim Form Continued
Climate Climate
Cell lineage determination in C. elegans vulva formation Cell lineage determination in C. elegans vulva formation
Video: Medullary osmotic gradient - influencing factors

For a complete list of videos, visit our video library