What type of wave is a sound wave?
Longitudinal
Sound is an example of a longitudinal wave caused by ... in the air.
vibrations
What's amplitude measured in?
(decibeles)metres
Which piece of equipment increases the size of a current produced in a microphone?
amplifier
The amplitude
how loud the sound wave is
What numbers are at the two ends of the decibel scale?
0-180
What does an oscilloscope show?
sound wave on a screen
What does an oscilloscope measure?
voltage waves
What type of current flows inside a loudspeaker?
electric
Give characteristics of a wave that we can record using an oscilloscope:
- amplitude
- wavelength
- frequency
What is the top of the wave?
what is regions of low pressure due to particles being spread further apart?
crest
rerfaction
What's the meaning of longitudinal?
Longitudinal means that the wave moves in the same direction that the particles in the air are vibrating.
longitudinal wave
transverse wave
What is the amplitude?
the distance from the centre line (or the still position) to the top of a crest or to the bottom of a trough .