Which statement best describes longitudinal waves?
a) particles of the wave medium move perpendicular to the direction of propagation of the wave.
b)longitudinal waves do not require a material medium for propagation.
c)particles of the wave medium move parallel to the direction of propagation of the wave.
d) particles of the wave medium move long distances from the source of the wave to carry energy.

The correct option is (C).

Explanation:

When the particles of the medium travel parallel to the direction of the propagation of the wave then the wave is said to be longitudinal wave.

It needs medium to travel. It can travel in solid, liquid and gas.

The example of the longitudinal wave is a sound wave. Sound wave consists of compression and rarefaction.

When the particles of the medium travel perpendicular to the direction of the propagation of the wave then the wave is said to be transverse wave.

Therefore, the best statement which describes the longitudinal wave is option (C).

a cold ice-tea.

pour in room temperature or cold water. cover the pitcher and refrigerate. steep white or green tea for 6 to 8 hours; steep black or oolong tea for 8 to 12 hours.jun 28, 2015