Complete the following statements:

A mechanical wave is a wave in which energy is transferred along _________________. [1]

Mechanical waves travel at _________________ than the speed of light [1]

An example of a mechanical wave is _____________________________________. [1]

In an electromagnetic wave, energy is transferred _________________ of matter. [1]

Electromagnetic waves travel at the speed of ______________________. [1]

An example of an electromagnetic wave is _________________________________. [1]

In a transverse wave, vibrations occur at _______________ angles to the direction of [1]

travel of the wave. An example of a transverse wave is _________________________

______________________________________________. [1]

In a longitudinal wave, vibrations occur ______________________________________

_______________________________________. [1]

An example of a longitudinal wave is _____________________________________ [1]

All objects have a __________________ frequency of vibration. When energy is supplied to a system at its natural frequency of vibration, the system vibrates with _________________ amplitude. This phenomenon is called __________________________. [3]

2. How is sound produced? ______________________________________________________ _______________________________________________________________________ [2]

Complete the table below which describes characteristics of sound. The first row is done for you. [2]

Characteristic	Physical quantity related to characteristic
Pitch	Frequency
Loudness
	Presence of several frequencies called harmonics

3. The diagram below shows standing waves on a string vibrating at its fundamental

frequency of vibration. The string has a length of 1.60 m.