refraction and reflection

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Refraction and Reflection Coastal Process

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Refraction and Reflection. Coastal Process. Beach. Headland. Headland: A cliffed cape or promontory sticking out into the sea. Beach. Headland. Wave front. Beach. Headland. Wave direction. Waves bend when they approach shallow water. Beach. Headland. Cliffed edge. Headland. - PowerPoint PPT Presentation

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Page 1: Refraction and Reflection

Refraction and Reflection

Coastal Process

Page 2: Refraction and Reflection

Headland

Beach

Headland: A cliffed cape or promontory sticking out into the sea.

Page 3: Refraction and Reflection

Headland

Beach

Wave front

Page 4: Refraction and Reflection

Headland

Beach

Waves bend when they approach shallow water.

Wave direction

Page 5: Refraction and Reflection

Headland

Beach

Page 6: Refraction and Reflection

Headland

Cliffed edge

Wave energy converges on the headland

High energy

Page 7: Refraction and Reflection

Headland

Cliffed edge

When waves hit a solid surface like the cliff they are reflected back towards the sea. The waves erode the rock and beach and take the sediments with them.

Page 8: Refraction and Reflection

Headland

Beach

Page 9: Refraction and Reflection

Beach

Wave energy diverges on the beach

Low energy

Page 10: Refraction and Reflection

Beach

Wave energy is spread out so the waves have a gentler erosive power. This area is where sediments will be dropped.

Page 11: Refraction and Reflection

Headland

Beach

Sediment movement

erosion

Page 12: Refraction and Reflection

Refraction: waves bending

Think of wave refraction like a group of soldiers marching, they are able to stay in a straight line formation and go at a fast pace on firm ground. But when the group of soldiers meet a different surface, one that is harder to walk through, the line is slowed as it reaches the mud. This bends their motion.

Just like the soldiers, ocean waves can travel at a good pace while out in deep water but when it hits shallow water the waves slow and bend.

Page 13: Refraction and Reflection

Wave ReflectionThe intensification of wave energy resulting from a wave pounding against a solid, vertical surface. Reflection of a wave is bouncing of a solid and going back from where it came.