How our actions affect all

coastlines...

What does our local coastline look like?

What is a coastline?

What types of coastline are there?

Sand Dunes

Why are Sand Dunes important?

What if there were no Sand Dunes?

How are sand dunes formed?

Sand Dunes are formed in many ways. One of the ways is by the wind. The wind picks up the lighter sand and blows it

through the air until it hits the grass or plants on the dunes and it drops to the ground. Over time more and more sand

gets blown onto these dunes, making them bigger and bigger. The grasses continue to grow and their roots hold the dunes

together.

Wind picks up lighter sand and blows it through the air

Sand crashes into the grasses and plants

on the dunes and drops to the ground, building up to form the dunes

Formed by the Wind

Plant roots

Another way dunes are formed is by the waves. The waves pick up the sand from the ocean floor and deposits the sand

on the beach when the waves crash onto the shore. The higher the tide the further up the beach the sand gets

deposited.

Wave picks up sand from ocean floorSand gets deposited on the beach

Sand gets ripped out and carried out to sea which is

why the ocean gets deeper the further you go out

Formed by the Waves

Humans use fences and planting to help build dunes to protect their houses and businesses from rough sea. This is done by

catching the naturally produced sand in the wind and creating dunes.

Wind picks up lighter sand and blows it through the airHumans plant vegetation to catch the

sand and form dunes

Formed by Humans

Humans build fences to catch the sand,

although these dunes are not strong as there are no plant

roots to hold it together

What if there were no plants on the dunes?

If there was no plant roots to hold the sand dunes together the wind would pick up the sand and blow it through the air until it

crashed into something, which would usually be somebodys house

What if there were no plant roots to hold the sand dunes together?

Wind blows sand into peoples properties

So your big question is...

“How do our actions affect our local coastline?”

What can you do about it?