Deposition landforms: Beaches and sand dunes

Question 1

Where are sandy beaches located?

Answer 1

Bays.

Question 2

What type of beach is located in bays?

Answer 2

Sandy beaches.

Question 3

Where do constructive waves occur?

Answer 3

Bays.

Question 4

What type of wave are predominantly at bays?

Answer 4

Constructive.

Question 5

What type of gradient is at a sandy beaches?

Answer 5

Gentle gradient.

Question 6

Where are beaches with gentle gradients located?

Answer 6

Bays.

Question 7

What type of beaches have a gentle gradient?

Answer 7

Sandy beaches.

Question 8

Where are pebble beaches located?

Answer 8

Coastlines.

Question 9

What type of waves are at pebble beaches?

Answer 9

Destructive waves.

Question 10

What type of gradient is at pebble beaches?

Answer 10

Steep gradient.

Question 11

What type of beaches have destructive waves?

Answer 11

Pebble beaches.

Question 12

What type of beach has a steep gradient?

Answer 12

Pebble beaches.

Question 13

What is the first step in the formation of a sand dune?

Answer 13

Sand moved up the beach by the aeolian deposition (wind).

Question 14

What is the second step in the formation of a sand dune?

Answer 14

Obstacles (e.g. driftwood) decrease wind speed so sand is deposited to form embryo dunes.

Question 15

What is the third step in the formation of a sand dune?

Answer 15

Embryo dunes are colonised by marram grass. Roots stabilise the sand.

Question 16

What is the fourth step in the formation of a sand dune?

Answer 16

Sand stabilises forming foredunes and mature dunes. Decomposing vegetation makes the soil more fertile so more vegetation can grow.

Question 17

What is the last step in the formation of a sand dune?

Answer 17

Dune slacks (small pools) can form in depressions in the sand. These are caused by the wind.

Question 18

What fluvian process aids in the formation of a sand dune?

Answer 18

Deposition.

Question 19

When sandy beaches are formed, what type of waves are there?

Answer 19

Constructive.

Question 20

Why are bays more sheltered?

Answer 20

They are protected by headlands.

Question 21

What is a berm?

Answer 21

Something that marks the high tide and the extent to the water.

Question 22

What is the fluvial process involved in the forming of a beach?

Answer 22

Deposition.

Question 23

Explain the formation of a beach.

Answer 23

Sand and shingle are deposited at the coasts.

Often this happens in bays which are more sheltered.

The waves entering the bay are constructive waves. Which have a strong swash and a weak backwash.

Some beaches are made of pebbles.

These are made from nearby eroding cliffs.

A berm on the beach marks where the high tide line is and the extent to the water.