Water Quiz

1. Which river 'load' is responsible for transporting the majority of sediment downstream?

• bedload

• suspended load

• dissolved load

2. What type of bed material would be most likely for a river located high in a watershed?

• boulders

• sand

• clay

3. Which particle size (listed below) would be the last to settle out of a river that slows down as it flows into a lake?

• sand

• silt

• clay

4. What would be the discharge for a river that has a depth of 3 m, a width of 4 m, and a velocity of 1 m/s?

• 12 m³/s

• 7 m³/s

• 12 cfs

• 7 cfs

5. Which of the following is NOT a factor that determines the carrying capacity of a river?

• discharge

• channel shape

• gradient/slope

• none of the items listed are a factor

• all of the items listed are factors

6. Which letter on the hydrograph would best represent flooding in an urban development: with a large percentage of impermeable surfaces?

• A

• B

• C

7. Which letter on the hydrograph would best represent flooding in rural land: with natural channels?

• A

• B

• C

8. Which of the following correctly summarizes the main changes in a river as it flows downstream?

• The slope/gradient becomes more gentle; the channel becomes wider & deeper; discharge increases & more sediment is carried.

• The channel becomes wider & deeper; less sediment can be carried; the discharge is lower.

• The discharge increase; the channel becomes narrower.

• The slope/gradient becomes steeper; discharge increases; the channel becomes wider & deeper

9. Which of the following options would be a reasonable landform feature found on the upper section of a river (high in the watershed)?

• ox-bow lake

• floodplain

• waterfall

• meander

10. Study the water cycle diagram… What is the name of the movement of water identified as #6 on the diagram?

• infiltration

• precipitation

• throughflow