This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Explain why glaciers are much more effective agents of erosion than streams, even though glaciers ... (Read 22 times)

newbem

  • Hero Member
  • *****
  • Posts: 579
on: Jul 16, 2018
Explain why glaciers are much more effective agents of erosion than streams, even though glaciers move much slower than streams.
 
  What will be an ideal response?

Question 2

What is the major difference between an intermittent stream that is dry part of the year and a stream that flows year-long, even when it has not rained or snowed for several weeks?
 
  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

phuda

  • Sr. Member
  • ****
  • Posts: 348
Reply #1 on: Jul 16, 2018
Answer to Question 1

The shear stress (force exerted by a moving object or fluid) is the critical factor when comparing the erosion by glaciers and streams. The shear stress increases with the increasing weight of the flowing material. Glaciers are many times thicker than the depth of water in streams, which means that the weight exerted at the bottom of a glacier is much greater than the weight exerted by water on a streambed. These differences mean that the shear stress exerted by flowing ice is much greater than that exerted by flowing water.

Answer to Question 2

The stream that flows year-long has a stream bed that is below the water table. It is fed by ground water year-round and by surface runoff after storms. The stream that is dry part of the year is not fed by ground water year-round.


newbem

  • Member
  • Posts: 579
Reply 2 on: Jul 16, 2018
Excellent

ghepp

  • Member
  • Posts: 361
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Characteristics of an effective leader Characteristics of an effective leader
This modified model of Easton’s systems theory puts government decision makers as the source of pol This modified model of Easton’s systems theory puts government decision makers as the source of pol
Toxins and Chemical Agents Can Contaminate Foods Toxins and Chemical Agents Can Contaminate Foods
Glaciers Glaciers
E9-23 Prepare income statements Explain the difference in operating income E9-23 Prepare income statements Explain the difference in operating income
What rate, compounded once every 3 years, is equivalent to 9% effective rate? What rate, compounded once every 3 years, is equivalent to 9% effective rate?
Video: Mitochondrial Structure & ETC Protein Complexes (Protein Complexes and Electron Transport)

For a complete list of videos, visit our video library