This topic contains a solution. Click here to go to the answer

Author Question: What is frictional drag and how does it affect the external movement of a glacier? What will be ... (Read 32 times)

Anajune7

  • Hero Member
  • *****
  • Posts: 574
What is frictional drag and how does it affect the external movement of a glacier?
 
  What will be an ideal response?

Question 2

Why are glacial striations so important?
 
  What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

xiaomengxian

  • Sr. Member
  • ****
  • Posts: 311
Answer to Question 1

Answer: Frictional drag is simply the slow down of movement due to the contact between two opposing surfaces. Frictional drag slows down a glacier's external movement. The glacier experiences this drag as it encounters the bedrock. So, movement is slowest at the base and at the sides of the glacier.

Answer to Question 2

Answer: Striations are parallel scratches created by glaciers scraping the underlying bedrock. Aligned in the direction of ice flow, striations tell us the past movement of a glacier that has long since receded. By mapping striations on land once covered by continental glaciers, geologist can decipher the flow direction of the ice.




Anajune7

  • Member
  • Posts: 574
Reply 2 on: Jul 29, 2018
Excellent


chjcharjto14

  • Member
  • Posts: 342
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

For a complete list of videos, visit our video library