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15 notecards = 4 pages (4 cards per page)

Viewing:

3.3.18 Waves

front 1

What type of wave is a sound wave?

back 1

Longitudinal

front 2

Sound is an example of a longitudinal wave caused by ... in the air.

back 2

vibrations

front 3

What's amplitude measured in?

back 3

(decibeles)metres

front 4

Which piece of equipment increases the size of a current produced in a microphone?

back 4

amplifier

front 5

The amplitude

back 5

how loud the sound wave is

front 6

What numbers are at the two ends of the decibel scale?

back 6

0-180

front 7

What does an oscilloscope show?

back 7

sound wave on a screen

front 8

What does an oscilloscope measure?

back 8

voltage waves

front 9

What type of current flows inside a loudspeaker?

back 9

electric

front 10

Give characteristics of a wave that we can record using an oscilloscope:

back 10

  • amplitude
  • wavelength
  • frequency

front 11

What is the top of the wave?

what is regions of low pressure due to particles being spread further apart?

back 11

crest

rerfaction

front 12

What's the meaning of longitudinal?

back 12

Longitudinal means that the wave moves in the same direction that the particles in the air are vibrating.

front 13

longitudinal wave

back 13

front 14

transverse wave

back 14

front 15

What is the amplitude?

back 15

the distance from the centre line (or the still position) to the top of a crest or to the bottom of a trough .