Constructive and Destructive Waves (large print)

By: Rnib

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Synopsis: This page shows two cross sectional images of beaches and waves, one on the top and one on the bottom of the page. The images are surrounded by an image border. There is a small key at the top of the page. There is a locator dot shown, which will be at the top left of the page when the image is the correct way up. The image on the top of the page shows small constructive waves. The beach has a gentle slope rising from the left to the beach on the right. This allows a strong swash that can deposit sand on the beach. The gentle, shallow profile means the backwash is weak and little material is taken back to the seabed. The image on the bottom of the page shows destructive waves. The beach has a steep slope rising from the left to the beach on the right. This means the swash is short and weak. The steep profile means the waves are big with most of the energy from the waves crashing down vertically onto the beach eroding it. The steep profile generates a strong backwash which drags material back to the seabed.

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