Coasts (waves and erosion)

What two erosional processes take place in the formation of erosional landforms?

• Attrition

• Abrasion

• Hydraulic action

• Solution

What wave has a strong swash and weak backwash?

What wave has a strong backwash and a weak swash?

What type of wave builds beaches?

• Constructive

• Destructive

What type of wave destroys beaches?

• Constructive

• Destructive

Abrasion is when ......

• The sheer power of the waves smashes against the cliff. Air becomes trapped in the cracks in the rock and causes the rock to break apart.​

• Rocks bang together becoming smaller and smoother

• Pebbles grind along a rock platform, much like sandpaper. Over time the rock becomes smooth.​

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• Certain types of rock dissolve due to acid in the water

Attrition is when ......

• The sheer power of the waves smashes against the cliff. Air becomes trapped in the cracks in the rock and causes the rock to break apart.​

• Rocks dissolve due to acid in the water

• Pebbles grind along a rock platform, much like sandpaper. Over time the rock becomes smooth.​

• Rocks bang together becoming smaller and more rounded

Solution is when .....

• The sheer power of the waves smashes against the cliff. Air becomes trapped in the cracks in the rock and causes the rock to break apart.​

• Pebbles grind along a rock platform, much like sandpaper. Over time the rock becomes smooth.​

• Certain rock dissolve in due to acid in the water

• Rocks bang together becoming smaller and more rounded

Hydraulic action is when ......

• The sheer power of the waves smashes against the cliff. Air becomes trapped in the cracks in the rock and causes the rock to break apart.​

• Pebbles grind along a rock platform, much like sandpaper. Over time the rock becomes smooth.​

• Certain rocks dissolve due to the acid in the water

• Rocks bang together making rocks smaller and more rounded

The distance a wave has travelled is called the ....