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

Author Question: Why is living on a floodplain behind a levee safe from flooding? a. Levees are rarely overtopped. ... (Read 45 times)

abern

  • Hero Member
  • *****
  • Posts: 533
on: Jul 13, 2018
Why is living on a floodplain behind a levee safe from flooding?
   a. Levees are rarely overtopped.
   b. Water cannot seep under levees to flood the floodplain.
   c. Levee banks are rarely eroded enough to fail.
   d. Once a levee is built high enough to contain a 100-year flood, it will never flood.
   e. Actually, 100-year flood levels often continue to get higher with time.

Question 2

How does a bridge promote erosion in a channel?
   a. The bridge pilings interfere with the water flow, causing additional sediments to be deposited.
   b. The water velocity decreases, due to restricted flow over the floodplain.
   c. The water velocity increases, due to restricted flow over the floodplain.
   d. The channel height decreases, and large particles fall out, creating more surfaces for erosion to occur.
   e. A bridge does not promote erosion.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

laurnthompson

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 13, 2018
Answer to Question 1

ANSWER: e

Answer to Question 2

ANSWER: c


abern

  • Member
  • Posts: 533
Reply 2 on: Jul 13, 2018
Great answer, keep it coming :)

carlsona147

  • Member
  • Posts: 341
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Dissimilar organisms with similar approaches to desert living. Dissimilar organisms with similar approaches to desert living.
Anthropologist Andrea Wiley (left) investigates the effects of high-altitude living on reproductive Anthropologist Andrea Wiley (left) investigates the effects of high-altitude living on reproductive
The plesiadapiforms may have been primates, but they lacked certain features, such as a postorbital The plesiadapiforms may have been primates, but they lacked certain features, such as a postorbital
Failing Dams and Flooding Failing Dams and Flooding
Percentage of Americans Living in Communities with a Fluoridated Water Supply, by State. 2012 Percentage of Americans Living in Communities with a Fluoridated Water Supply, by State. 2012
Exercise about living things Exercise about living things
Video: baroreceptors

For a complete list of videos, visit our video library