Question

Which of the following is the most accurate description of how a sound wave propagates?
a) A sound wave propagates by moving air particles across great distances.
b) A sound wave propagates by creating high and low pressure areas that push and pull the air around them.
c) A sound wave propagates by creating a vacuum between areas of air particles.
d) A sound wave propagates by filling the space left when a vibrating object moves in a direction opposite to the
wave’s motion.
e) A sound wave propagates by moving air particles perpendicularly to its direction of propagation.

Answer 1

We know sound wave are longitudinal waves where particles move back and forth along the direction parallel to motion of wave.

We can see it as spring being pushed and then oscillating.

therefore,

correct option - A sound wave propagates by creating high and low pressure areas that push and pull the air around them.