Write true of false for the following statements:

Sound and light travel in a medium in the form of crests and troughs and rarefactions and compressions respectively.

Write true of false for the following statements:

Sound waves travel faster in air than in water.

Write true of false for the following statements:

Sound travels faster at a higher temperature than at a lower

temperature.

Write true of false for the following statements:

Light waves require no medium for their propagation.

Write true of false for the following statements:

Sound produced by a sounding body of frequency 300 Hz covers 34 m in the time the sounding body produces 30 vibrations.