In a destructive wave, ___.
A. Backwash is stronger than swash.
B. Swash is stronger than backwash.
C. Water hits the beach in a straight line.
D. Sand and small rocks are deposited by water.
Answer (2)
In a destructive wave, backwash is stronger than swash, leading to the erosion of beach sand.
In a destructive wave, the backwash is stronger than swash. This type of wave action involves a dominance of backwash, which removes sand from the beach and returns it to the ocean. During periods with heavier waves, typically in winter, backwash becomes the dominant force, eroding sand from the beach. In contrast, during calmer conditions in summer, swash prevails, depositing sand to form a wider, sandy beach. Notably, as waves approach the shoreline at an angle, the backwash tends to flow straight down the slope of the beach, affecting sand movement in a zigzag pattern along the coast, contributing to the longshore drift.
In a destructive wave, backwash is stronger than swash, leading to beach erosion. This occurs because the destructive waves have more energy, especially during stormy conditions. These waves are more powerful in winter, causing significant sand and rock movement back into the ocean.
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