Question

A sound wave is travelling from East to West. In which direction do the molecules in the air move?

• A. East to West
• B. West to North
• C. North to South
• D. South to North

Answer 1

The correct option is A

East to West

East to West:

1. In the air, the sound wave travels in the form of a longitudinal wave in which the vibration of the molecules of a medium and the direction of a wave are parallel to each other.
2. So, if the sound wave is propagating from East to West, the particles will also vibrate themselves in the same direction.

Hence, option (a) is correct.