Particle Size using the ESRT

What is the minimum water velocity necessary to maintain movement of 0.1-centimeter-diameter particles in a stream?

• 
  0.02 cm/s

• 
  5.0 cm/s

• 0.5 cm/s

• 20.0 cm/s

A stream’s velocity decreases from 100 cm/s to 5cm/s. Which size sediment particles will still be transported by the stream?

• pebbles, sand, silt, and clay

• sand, silt, and clay, only

• silt and clay, only

• clay, only

The largest sediment particles that can be transported by a stream traveling at a velocity of 250 centimeters per second are

• 
  boulders

• 
  sand

• 
  pebbles

• 
  cobbles

The largest particles that a stream deposits as it enters a pond are 8 centimeters in diameter. The minimum velocity of the stream is approximately

• 
  100 cm/sec

• 300 cm/sec

• 400 cm/sec

• 200 cm/sec

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

What is the minimum rate of flow at which a stream can maintain transport of boulders?

• 100 cm/sec

• 300 cm/sec

• 200 cm/sec

• 400 cm/sec

What is the maximum particle size that can be carried by a stream having a velocity of 250 cm/sec?

• 0.0004 cm/sec

• 6.4 cm/sec

• .01 cm/sec

• 9.0 cm/sec

If the greatest velocity of the san Juan River on Dec 9th was 10 cm/s, what was the approximate largest particle size that the river could have been carrying

• 1.0 cm/sec

• 2.0 cm/sec

• 10.0 cm/sec

• 0.2 cm/sec

Reorder the following set of particles sizes in decreasing order

• 
  clay

• 
  boulders/cobbles

• 
  silt

• 
  sand

• 
  cobbles

The greater the slope

• 
  the stream velocity decreases

• the streams velocity stays the same

• the streams velocity increases

The greater the slope

• the stream velocity decreases

• the streams velocity stays the same

• the streams velocity increases