Deposition - Settling Rates

A stream moving at 100 cm/s will carry...

• cobbles, pebbles, sand, silt, clay only

• pebbles, sand, silt, clay only

• sand, silt, clay only

• silt, clay only

How fast does a stream need to be moving in order to move a particle .1 cm in diameter

• 0.5

• 5

• 10

• 20

How fast does a stream need to be moving in order to move the smallest size cobbles?

• 50

• 100

• 200

• 500

If a stream dropped in speed from 100 cm/s to 5 cm/s, what would be deposited

• Smaller Pebbles and Larger Sand

• Sand, Silt, Clay

• Boulders, Cobbles

• Pebbles, Sand, Silt, Clay

When a stream enters a body of water the velocity slowly decreases.....

• All of the sediment is dropped at once

• Smaller particles are deposited first

• Larger particles are deposited first

• All of the sediment is still carried down stream

What occurs when the velocity of a stream decreases?

• Erosion

• Weathering

• Deposition

• Equilibrium

Tags

NGSS.MS-ESS2-4

Where does erosion occur on the curve of a stream?

• inside the curve, where it is slower

• outside the curve, where its faster

• in the middle

• outside the curve, where it is slower

Where does deposition occur in a stream?

• In the middle and inside of the stream, where velocity increases

• Outside the curve and the mouth of the river, where velocity increases

• Inside of the curve, where the velocity increases

• Outside of the curve and the mouth of the river, where velocity decreases