Coasts re test

Question 1

1

Answer 1

Sand dunes are build ups of sand that are created around obstacles on a beach, these are usually things like rocks or human things like fences.

Question 2

2

Answer 2

Sand dunes are formed by strong winds and lots of sediment moving around through saltation

Question 3

3

Answer 3

When the wind encounters beach obstacles it stops the velocity and the sediment being carried is dropped.

Question 4

4

Answer 4

Over time, plants known as pioneers such as marram grass take root on the dune, their root systems help to stabilise the sand.

Question 5

5

Answer 5

As the plants die off they add nutrients and humus to the sand dune improving the soil, so more complex plants can grow.

Question 6

6

Answer 6

Eventually the climax vegetation is reached, which is forests in the UK.