Question

name ____ class __ date ____
chapter 6 running water and groundwater
deposition

1. when stream flow decreases to below the critical settling velocity of a certain size particle, ________ occurs.
2. how does a delta form? ________
3. circle the letter that represents natural levees in the figure below.

a. a b. b c. c d. d
image of a stream and surrounding landforms
stream valleys

1. circle the letter that represents an oxbow lake in the figure above.

a. a b. b c. c d. d

1. what shape will a stream valley have if its primary work has been downward erosion cutting toward base level?

________

1. a stream’s ________ is the flat valley floor onto which it overflows its banks during flooding.

floods and flood control
match each description with its term.
description term
______ 13. earthen mounds built on river banks a. artificial levees
______ 14. structures that store floodwater and let it out slowly b. floods
______ 15. mostly caused by rapid snowmelt and storms c. flood - control dams
drainage basins

1. a(n) ________ is an imaginary line separating different drainage basins.
2. the land area that contributes water to a stream is known as a(n) ________

Explanation:

Answer:

1. deposition
2. A delta forms when a stream enters a standing body of water, such as an ocean or a lake, and its velocity decreases, causing it to drop its sediment load.
3. b. B
4. d. D
5. V-shaped
6. floodplain
7. a. artificial levees
8. c. flood-control dams
9. b. floods
10. divide
11. drainage basin (or watershed)