Sound

Question 1

Sound is produced when…

Answer 1

something vibrates

Question 2

what is a sound wave?

Answer 2

when air particles alternate between being bunched together and spread apart

Question 3

air particles bunched together

Answer 3

compression

Question 4

air particles spread out

Answer 4

refraction

Question 5

sound relys on

Answer 5

particles - i.e solid, liquid and gases

Question 6

a longitudinal wave is

Answer 6

a wave made up of compressions and refractions

Question 7

wavelength

Answer 7

distance from a point on a wave to the same corresponding point on the next wave

Question 8

Frequency

Answer 8

number of waves that pass a point in one second (htz)

Question 9

if there are more waves that pass a point in one second is it a higher or lower frequency

Answer 9

higher

Question 10

rapid vibration =

Answer 10

higher pitch

Question 11

the frequency of a wave is the number of vibrations a source makes

Answer 11

per second

Question 12

frequency is measured in

Answer 12

hertz (hz)

Question 13

amplitude

Answer 13

maximum distance that each particle moves away from its resting position

Question 14

sound travels faster through solids than liquids

Answer 14

true

Question 15

sound travels faster through gases than liquids

Answer 15

false

Question 16

hard surfaces

Answer 16

reflect sounds (echo)

Question 17

soft survaces

Answer 17

absorb sound and convert it into heat

Question 18

the more tightly packed the particles of a medium are (the denser)….

Answer 18

the faster the sound wave will travel through it