Question

What does abrasion and hydraulic action mean?

Answer 1

Answer:

There are four types of erosion: Hydraulic action - this is the sheer power of the waves as they smash against the cliff. Air becomes trapped in the cracks in the rock and causes the rock to break apart. Abrasion - this is when pebbles grind along a rock platform, much like sandpaper. Over time the rock becomes smooth.

Answer 2

Answer:

Explanation:

There are four types of erosion: Hydraulic action - this is the sheer power of the waves as they smash against the cliff. Air becomes trapped in the cracks in the rock and causes the rock to break apart. Abrasion - this is when pebbles grind along a rock platform, much like sandpaper. Over time the rock becomes smooth.

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