Coasts – True or false

Waves erode the side of a cliff, forming a cave. When the cave breaks through to the other side, an arch is created. If the arch collapses, it leaves behind a sea stack, a tall column of rock.

What process do waves use to wear away the side of a cliff?

What is created when waves erode a cliff?

What happens when the cave created by waves breaks through to the other side?

What remains after the arch collapses?

What is the term used for the tall column of rock that remains after an arch collapses?