Deposition

A delta at the mouth of a river is the direct result of 

• runoff from sewage
• deposition of sediment
• an ancient glacier that passed through
• an underground river flowing to the ocean

Tags

NGSS.MS-ESS2-2

Which rock particles will remain suspended in water for the longest time?

• pebbles
• silt
• clay
• sand

The sediment deposited in each bed is best described as

• sorted mainly according to particle shape
• a mixture of sorted and unsorted particles
• sorted mainly according to particle size
• showing no evidence of sorting

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

Why do the particles carried by a river settle to the bottom as the river enters the ocean?

• Velocity of the river water decreases as it enters the ocean
• Kinetic energy of the particles increases as the particles enter the ocean
• Density of the ocean water is greater than the density of the river water
• Large particles have a greater surface area than the small particles

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which characteristic would most likely decrease along the reference line from A to B? (Traveling away from the mouth of the river)

• the density of the water

• the size of the sediments

• the amount of salt in solution

• the depth of the water

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

According to the ESRT, what must be the size of a boulder?

• greater than 25.6 cm in diameter
• 0.2 to 6.4 cm in diameter
• less than 0.2 cm in diameter
• 6.4 to 25.6 cm in diameter

Which kind of sediment would probably be deposited farthest out in the lake?

• silt
• sand
• clay
• pebbles

When a stream flows into a lake, in what order are sediments deposited?

• clay, silt, sand then pebbles
• sand, silt, clay then pebbles
• pebbles, clay, silt then sand
• pebbles, sand, silt then clay

Tags

NGSS.MS-ESS2-1

How does size affect the settling rate of a particle in water?

• As size increases, settling rate increases.
• As size increases, settling rate decreases.
• Size does not affect settling rate.

Tags

NGSS.MS-PS2-2

How does angularity affect the settling rate of a particle in water? (more angular = less round)

• As angularity increases, settling rate increases.

• As angularity increases, settling rate decreases.

• Angularity does not affect settling rate.