Stream Erosion

With a steeper slope, we would expect to see...

• less erosion

• more erosion

• the same amount of erosion

• no erosion at all

Tags

NGSS.MS-ESS2-2

Which of the following statements is not true?

• Water causes more erosion on slopes without plants
• Water flows from higher to lower ground
• Faster water erodes more sediment
• As water slows, smaller particles are deposited first

Tags

NGSS.MS-ESS2-2

When a stream or river starts to slow down, it:

• Picks up more sediment
• Erodes more rapidly
• Deposits fine sediments, but continues carrying larger rocks
• Deposits larger rocks, but continues carrying finer sediment

The steeper the slope, the ________ the stream.

• Slower
• Broader
• Faster
• Curvier

At which location is the greatest amount of sediment most likely being deposited?

• A
• B
• C
• D

Tags

NGSS.MS-ESS2-2

The diagram below shows a section of a meander in a stream. The arrow shows the direction of stream flow. The stream bank on the outside of this meander is steeper than than the stream bank on the inside of this meander because the water on the outside of the meander is moving

• Slower, causing deposition
• Faster, causing deposition
• Slower, causing erosion
• Faster, causing erosion

Tags

NGSS.MS-ESS2-2

What is erosion?

• The movement of sediment

• The breaking of sediment

• The dropping of sediment

Tags

NGSS.MS-ESS2-2

If the velocity of a stream decreases from 50 centimeters per second to 5 centimeters per second, which sediments will deposit?

• A) small cobbles and large pebbles

• B) small pebbles and large sand

• C) small sand and large silt

• D) small silt and large clay

Quartz particles of varying sizes are dropped at the same time into deep, calm water. Which cross section best represents the settling pattern of these particles?

• A

• B

• C

• D

Clay, silt, and sand are added to a jar of water. The jar is shaken and then allowed to stand quietly for a number of hours. The result of this demonstration could be best used as a model to show that

• A) particles with the lowest density settle the fastest

• B) particles with the largest size/diameter settle the fastest

• C) water is denser than clay, silt, and sand

• D) the bottom layer of a series of sediments is the youngest

Tags

NGSS.MS-PS2-5