How our actions affect all coastlines...

1. How our actions affect all coastlines... What is a coastline? What does our local coastline look like? What types of coastline are there?

2. Sand Dunes Why are Sand Dunes important? What if there were no Sand Dunes?

3. How are sand dunes formed?

4. Formed by the Wind 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 Plant roots 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.

5. Formed by the Waves Sand gets deposited on the beach Wave picks up sand from ocean floor Sand gets ripped out and carried out to sea which is why the ocean gets deeper the further you go out 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.

6. Formed by Humans Wind picks up lighter sand and blows it through the air Humans plant vegetation to catch the sand and form dunes Humans build fences to catch the sand, although these dunes are not strong as there are no plant roots to hold it together 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.

7. What if there were no plants on the dunes?

8. What if there were no plant roots to hold the sand dunes together? Wind blows sand into peoples properties 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

9. So your big question is... “How do our actions affect our local coastline?” What can you do about it?