3.2 - Sediment Cells

Question 1

Glass Beach, CA

Answer 1

Tourist attraction
Gradually diminishing
Need for replenishment

Question 2

Transporation Processes

Answer 2

Traction
Saltation
Suspension
Solution

Question 3

Traction

Answer 3

Sediment rolls along

Question 4

Saltation

Answer 4

It bounces along 2-10cm above the beach

Question 5

Suspension

Answer 5

Carried along, making water muddy

Question 6

Solution

Answer 6

It’s dissolved but doesn’t happen much

Question 7

Sediment Cells

Answer 7

Stretches of coastline where the movement of material is mainly self-contained.
Closed Systems - Inputs, Transports, Outputs

Question 8

Dynamic Equilibrium

Answer 8

Negative - Cliff collapse creates protective debris
Positive - Storms erode sand dunes and can’t recover; SLR erodes a spit and sediment isn’t replaced.

Question 9

Closed System

Answer 9

Large natural barriers stop sediment moving out of/between sediment cells.

Question 10

Semi-Closed System

Answer 10

Small material can make it out/between cells.

Question 11

Open

Answer 11

Wind, tides, or tidal currents might remove material.

Question 12

Inputs

Answer 12

From cliffs, headlands, rivers, lagoons by coastal processes OR deposited by rivers in coastal environments.

Question 13

Transport

Answer 13

By littoral drift/currents/wind.

Question 14

Deposition Into Stores

Answer 14

Gravity Settling - Energy is too low
Flucctuation - Small clay particles attracted, clump together
Deposition can happen on a beach or offshore.