Consider the following statements about the "Surf": 1. It is formed exclusively by local winds blowing near the shore. 2. It is the result of waves breaking and dissolving as they roll ashore. 3. It involves the forward movement of water onto the beach. Which of the statements given above is/are correct?

The correct option is 2 and 3 only Explanation Ocean waves are energy traveling through water. In deep water, wave energy moves forward while water particles move in circular orbits (waves of oscillation). As waves approach the shore and enter shallow water, their behavior changes due to friction with the sea floor, transforming them into "surf." Statement-wise Analysis - Statement 1 is Incorrect. Surf is not formed exclusively by local winds. While local winds can generate waves, the surf observed on a beach is often the result of swells-waves generated by storms or winds thousands of kilometers away in the open ocean. These swells travel vast distances before reaching the shore and breaking as surf. - Statement 2 is Correct. Surf is defined as the turbulent water created when waves break. As a wave approaches the shore, the bottom of the wave slows down due to friction with the seabed, while the top continues at the original speed. Eventually, the wave height increases, and the crest becomes unstable and topples over (breaks), dissolving into foam and bubbles known as surf. - Statement 3 is Correct. In deep water, waves are "waves of oscillation," where water particles rotate in place without significant net forward movement. However, when waves break and become surf, they transform into waves of translation. In this phase, the water itself physically moves forward, rushing up the beach as "swash." Key Takeaway Surf represents the breaking of waves in shallow water, marking the transition from waves of oscillation (energy transfer) to waves of translation (physical water movement onto the shore).

NCERT Class 11 Geography — Chapter 2: Movements of Ocean Water

mcqmedium

Consider the following statements about the "Surf":

It is formed exclusively by local winds blowing near the shore.
It is the result of waves breaking and dissolving as they roll ashore.
It involves the forward movement of water onto the beach.

Which of the statements given above is/are correct?

Official previous-year question

Verified 1 Aug 2026.

Options

A1, 2 and 3
B1 and 2 only
C2 only
D2 and 3 only

Did you get this right?

Solution

The correct option is 2 and 3 only

Explanation

Ocean waves are energy traveling through water. In deep water, wave energy moves forward while water particles move in circular orbits (waves of oscillation). As waves approach the shore and enter shallow water, their behavior changes due to friction with the sea floor, transforming them into "surf."

Statement-wise Analysis

Statement 1 is Incorrect. Surf is not formed exclusively by local winds. While local winds can generate waves, the surf observed on a beach is often the result of swells-waves generated by storms or winds thousands of kilometers away in the open ocean. These swells travel vast distances before reaching the shore and breaking as surf.
Statement 2 is Correct. Surf is defined as the turbulent water created when waves break. As a wave approaches the shore, the bottom of the wave slows down due to friction with the seabed, while the top continues at the original speed. Eventually, the wave height increases, and the crest becomes unstable and topples over (breaks), dissolving into foam and bubbles known as surf.
Statement 3 is Correct. In deep water, waves are "waves of oscillation," where water particles rotate in place without significant net forward movement. However, when waves break and become surf, they transform into waves of translation. In this phase, the water itself physically moves forward, rushing up the beach as "swash."

Key Takeaway

Surf represents the breaking of waves in shallow water, marking the transition from waves of oscillation (energy transfer) to waves of translation (physical water movement onto the shore).

Your note

More from Chapter 2: Movements of Ocean Water

Consider the following factors: 1. The shape of bays and estuaries has no influence on the magnitude of tides. 2. Presence of wide continental shelves. 3. Presence of mid-oceanic islands. Which of the above factors can influence the height or magnitude of tidal bulges?

medium

Which of the following best describes the general movement of warm ocean currents?

easy

With reference to the movements of ocean water, consider the following statements: 1. Ocean currents represent the horizontal motion of water while tides represent the vertical motion. 2. In waves, the water moves ahead from one place to another along with the wave train. 3. The upwelling of cold water from the subsurface is a form of horizontal motion. Which of the statements given above is/are correct?

medium

Consider the following statements regarding the characteristics of ocean waves: 1. The largest waves are typically found in open oceans rather than enclosed seas. 2. Steep waves are generally old and originate from far away places. 3. Slow and steady waves usually originate from far away places. Which of the statements given above is/are correct?

medium

The maximum height of a wave is determined by which of the following factors? 1. The strength of the wind has no role in determining wave height. 2. The duration for which the wind blows. 3. The area over which the wind blows in a single direction. Select the correct answer using the code given below:

easy

Keep practising Chapter 2: Movements of Ocean Water

Work through every question from this NCERT chapter.

Browse all NCERT Class 11 Geography chapters

The correct option is 2 and 3 only

Explanation

Statement-wise Analysis

Statement 1 is Incorrect. Surf is not formed exclusively by local winds. While local winds can generate waves, the surf observed on a beach is often the result of swells-waves generated by storms or winds thousands of kilometers away in the open ocean. These swells travel vast distances before reaching the shore and breaking as surf.
Statement 2 is Correct. Surf is defined as the turbulent water created when waves break. As a wave approaches the shore, the bottom of the wave slows down due to friction with the seabed, while the top continues at the original speed. Eventually, the wave height increases, and the crest becomes unstable and topples over (breaks), dissolving into foam and bubbles known as surf.
Statement 3 is Correct. In deep water, waves are "waves of oscillation," where water particles rotate in place without significant net forward movement. However, when waves break and become surf, they transform into waves of translation. In this phase, the water itself physically moves forward, rushing up the beach as "swash."