SP25-Streams and Flooding

In a meandering river like the one shown here, where are the highest velocities in the river channel?

• nearer to the inside bends

• nearer to the outside bends

• velocities are everywhere the same

In a meandering river like the one shown here, where does most of the sediment deposition happen in the river channel?

• along the inside bends

• along the the outside bends

• deposition happens everywhere in the channel

In a meandering river like the one shown here, what occurs at the location labeled Point bar?

• a lot of sediment is deposited

• a lot of sediment is eroded

Tags

NGSS.MS-ESS2-2

In which zone would you expect to see gravel size sediments being deposited?

• Zone 1

• Zone 2

• Zone 3

In which zone would you expect to see a lot of silt and clay size sediments (mud) being deposited?

• Zone 1

• Zone 2

• Zone 3

Tags

NGSS.MS-ESS2-4

In which zone would you expect to see a delta being formed?

• Zone 1

• Zone 2

• Zone 3

Tags

NGSS.MS-ESS2-4

Discharge in a stream refers to:

• sediments it carries

• color of the water

• volume of water flowing

• speed or velocity of water

What grain sizes of sediment particles are mostly deposited in a river delta?

• large (gravel)

• medium to smaller (sand)

• small to very small (silt and finer sand)

In this stream discharge vs. probability graph, what is the probability of a flood discharge = 700,000 ft^3/s?

• 0.05

• 0.1

• 0.2

• 0.3

Flooding in rivers occurs when the quantity of water _____  the capacity of the river channel causing water to overtop the river banks and flow onto the surrounding land.

• is less than

• is equal to

• exceeds

Tags

NGSS.MS-ESS3-2