1What is a wave? Explain, using a pond, how a wave carries energy.
2A wave crosses a pond but the water does not. Explain what actually travels.
3Write the difference between a mechanical wave and an electromagnetic wave.
4Write the difference between a longitudinal wave and a transverse wave.
5How is the sound produced when we talk transmitted to the listener? Explain with the help of a figure.
6Write the symbol and the SI unit of wavelength, amplitude, frequency and wave velocity.
7A wave has a speed of 10 m/s and a wavelength of 1 m. Find its frequency.
8Why is the amplitude of the sound large when a drum set is struck hard with a stick?
9In a sound wave, how many complete waves are produced from one compression to the third rarefaction that follows it in order?
10Give the reason: sound travels fastest in a solid and slowest in a gas.