RUNNING WATER TEST

MULTIPLE CHOICE

1. What kind of bedrock is dissolved most easily in running water?

a. gneiss b. quartzite c. basalt d. limestone

2. The material carried by suspension in a river tends to:

a. make the river look muddy b. be ions of magnesium

c. bounce along the river bed d. cause swirls and eddies

3. The method that a river carries materials that relies on the least amount of water turbulence is:

a. suspension b. solution c. bouncing d. rolling

4. Increasing the steepness of a river's bed is LEAST likely to change the:

a. volume of water flowing in the stream

b. total amount of sediment a stream can carry

c. speed at which the stream flows

d. size of the particles the stream can move

5. Streams of mountain regions and high plateaus are NOT likely to have:

a. V-shaped valley b. rapid water flow c. oxbow lakes d. waterfalls

6. The western divide for the Mississippi river system is the:

a. Great Lakes b. Appalachian Mts. c. Rocky Mts. d. Gulf of Mexico

7. A famous example of a waterfall that recedes by undermining is on the:

a. Mohawk River b. Niagara River c. Potomac River d. Yellowstone

8. Which situation is MOST likely to cause a river to deposit all sediment?

a. New tributaries flow into river b. Water for irrigation

c. River passes through a desert d. The river flows into a lake

9. Which process produces the round pebbles and sand found in a river bed?

a. suspension b. lifting c. dissolving d. abrasion

10. When streams flow at high speed and high discharge rates, they are able to carry:

a. smaller amounts of large particles only

b. larger amounts of small particles only

c. smaller amounts of both large and small particles

d. larger amounts of both large and small particles

11. A type of formation that grows in length, width, and depth every time it rains is called a:

a. gully b. watershed c. canyon d. valley

12. The largest watershed in the United States is associated with the:

a. Missouri River b. Snake River c. Ohio River d. Mississippi River

13. The high land that separates river systems is known as a:

a. valley b. divide c. gully d. delta

14. The process by which one river wears through to a second river and begins to pull the second river's water is known as:

a. undermining b. discharge c. piracy d. rearward erosion

15. What is the major difference between a water gap and a wind gap?

a. Water gaps still have water flowing through them; wind gaps do not

b. Water gaps were eroded by rivers; wind gaps were eroded by wind

c. Water gaps are located in canyons; wind gaps occur on mountains

d. Water gaps are carved in limestone; wind gaps are carved in granite

16. Cities located near rivers are particularly vulnerable to:

a. landslides b. stream piracy c. flood damage d. spillways

17. Runoff increases when the ground is frozen because the ground becomes:

a. impermeable b. more absorbent c. more porous d. more permeable

18. Average sized, almost perfect holes can form in a river. Name them?

a. potholes b. sink holes c. plunge pools d. divides

19. Most flash floods are due to:

a. cloud bursts b. dam breakage c. sun showers d. river floods

20. The area where a river breaks through a meander is called a:

a. divide b. icejam c. flood d. cutoff

FILL IN THE BLANK

21. Real large depressions at the base of a waterfall are called __________.

22. The remains of a cutoff in a meander will become known as a ___________.

23. A _______ is a formation at the end of a stream that meets a lake.

24. The __________ is made up of big stones and pebbles carried by water.

WORD BANK

cutoff / meander / plunge pool / delta / solution / bed load / oxbow lake