What are the three types of waves described?

• A. Plunging, Spilling, Surging
• B. Breaking, Rolling, Tidal
• C. Chop, Wind waves, Swell
• D. Rogue, Backwash, Surge

Answer: (A)

Waves breaking on shore are described by how the crest behaves as it reaches the beach. The three kinds you’ll see most often are plunging, spilling, and surging. Plunging waves curl over and drop down in a hollow, powerful break that can slam onto the shore with a sudden drop. Spilling waves break more softly on a gentler slope, with the crest rolling down the front and producing lots of white water but a longer, gentler release. Surging waves don’t form a tall, curling crest at all; they surge up onto the beach with little or no breaking, delivering a strong forward shove.

This is the standard way to describe breaking waves, and it helps you gauge what to expect near the shore, including how much energy you’ll feel and how the water may push or catch a boat. Other terms describe wave sources or irregular phenomena, but they don’t fit this common three-type breakdown of how waves actually break.