SOUND

Sound waves in air cause ______ in the ears?

A _____ wave is a disturbance in matter that transfers energy through the matter. A ______ wave starts when matter is disturbed. A source of energy is needed to disturb matter and start a ______ wave.

The particles of the _____ just vibrate in place. As they vibrate, they pass the energy of the disturbance to the particles next to them, which pass the energy to the particles next to them, and so on. Particles of the _____ don’t actually travel along with the wave. Only the energy of the wave travels through the _____ .

A __(1)__ wave is a wave in which particles of the medium vibrate at right angles, or __(2)___, to the direction that the wave travels. The type of mechanical wave passing through the vibrating guitar string is a __(1)__wave.

Choices:

1) Transverse or Longitudinal

2)Perpendicular or Parallel

A transverse wave is characterized by the high and low points reached by particles of the medium as the wave passes through. 

The high points are called ____.

The low points are called _____.

Sound is defined as the transfer of energy from a vibrating object in waves that travel through matter. 

All sound waves begin with vibrating matter.

• True 

• False

______ is a measure of the size of sound waves. It depends on the amount of energy that started the waves. Greater _____waves have more energy and greater intensity, so they sound louder.

• Pitch

• Volume

• Frequency

• Amplitude

How high or low a sound seems to a listener is its ___. ___, in turn, depends on the frequency of sound waves.

• Pitch

• Amplitude

• Volume

• Wave

Wave frequency is the number of waves that pass a fixed point in a given amount of time.

• True

• False

The frequency of sound waves is measured in _____, or the number of waves that pass a fixed point in a second.

• watts

• meters

• hertz

• pitch