Transportation + Deposition

Question 1

Types of transportation (4)

Answer 1

Traction
Saltation
Suspension
Solution

Question 2

What is traction (3)

Answer 2

Large stones and boulders are rolled along the seabed and beach by moving seawater
They are too heavy to be picked up
Only move if energy levels are high enough

Question 3

What is saltation (2)

Answer 3

Small stones bounce along the seabed and beach
Light enough to be picked up but heavy enough to be within the flow

Question 4

What is suspension (3)

Answer 4

Very small particles of sand and silt are carried along by the moving water
Within the flow
Cause a murky appearance of the sea

Question 5

Solution what (2)

Answer 5

Dissolved materials are transported within the mass of moving water
Important role in the carbon cycle = transfers + deposits carbon in the oceans

Question 6

Movement of Longshore drift (4)

Answer 6

Waves approach beach at angle = same as prevailing wind
Swash approaches at an angle and pushes material up the beach at an angle
Backwash pulls material down the beach at right angles to the shore = gravity
Net effect = zigzag movement of sediment up and down the beach

Question 7

When does deposition occur

Answer 7

When the velocity of the water or wind falls below a critical value for a particular size of particle

Question 8

Examples of areas of deposition (4)

Answer 8

Beaches
Spits
Mudflats
Sand dunes

Question 9

Why deposition (4+)

Answer 9

Currents weaken
Prevailing winds may lighten in strength
Opposing currents meet = turbulence = deposition below the surface
Waves move over seabed = friction

Question 10

What do aeolian processes relate to

Answer 10

Wind

Question 11

How does wind help deposition (3+)

Answer 11

When there is a large tidal range = low tide = large amounts of sand exposed
Provides a supply of sediment to be picked up + transported
Transported close to the ground and over relatively short distances