Sound

Question 1

frequency

Answer 1

the number of vibrations a second

Question 2

amplitude

Answer 2

the size of the vibration

Question 3

frequency of a sound wave

Answer 3

the number of sound waves passing per second

Question 4

amplitude of a wave

Answer 4

the distance moved by the air particles as a sound wave passes

Question 5

units to measure the loudness of a sound

Answer 5

decibels (dB)

Question 6

units for frequency

Answer 6

hertz (Hz)

Question 7

echo

Answer 7

a reflected sound

Question 8

longitudinal wave

Answer 8

a sound wave where the particles vibrate in the same direction as the wave is travelling eg. water ripples in a lake

Question 9

transverse wave

Answer 9

waves on the surface of water that vibrate at right angles to the direction at which the wave is moving

Question 10

amplitude of a transverse wave

Answer 10

the maximum distance the particles move up or down from their original position

Question 11

superposition

Answer 11

when two waves passing through a medium overlap their effects can add together or cancel out each other