The sea water thrown up the beaches by the breaking waves is called

1. Analyze the question The question asks for the name of the water that is thrown up the beach by breaking waves. The key idea is the direction of movement: up the beach.

2. Explain the concept When a wave breaks on the shore, the water moves in two stages:

• Swash: the forward and upward rush of water up the beach after a wave breaks. It carries sand and pebbles up the slope.
• Backwash: the return flow of water down the beach under gravity, back to the sea.

In a constructive wave, the swash is stronger than the backwash, so material is deposited and the beach builds up. In a destructive wave, the backwash is stronger, so material is removed.

3. Solve step by step

• A. Backwash: water flowing down the beach back to the sea. This is the opposite of what the question describes.
• B. Shore: the land area along the edge of a water body. It is not water movement at all.
• C. Undertow: a strong undercurrent beneath the surface that pulls water seaward below incoming waves. It also moves away from the land.
• D. Swash: water thrown up the beach by breaking waves. This matches the question.

4. Answer The correct option is D. Swash.

5. Exam tip Remember: Swash = Shoves water Shoreward (up the beach). Backwash = Back to the sea. If a question says "up the beach" or "forward", think swash. If it says "back down" or "return", think backwash.