P12 - Wave properties

Question 1

waves

Answer 1

transfer energy without transferring matter

Question 2

mechanical waves

Answer 2

-need a medium to travel through
-can be both transverse/ longitudinal waves

Question 3

eg of mechanical waves

Answer 3

-sound
-water
-waves on springs
-seismic waves

Question 4

electromagnetic waves

Answer 4

can travel through vacuums

Question 5

electromagnetic waves eg

Answer 5

light
radio
-microwaves

Question 6

waves in water when an object is dropped

Answer 6

-waves spread out
-waves travel not water

Question 7

tuning fork

Answer 7

vibrates to make sound wave through air

Question 8

transverse wave

Answer 8

-oscillations are perpendicular to direction in which waves transfer energy

Question 9

eg of transverse wave

Answer 9

rope
ripples
-electromagnetic waves

Question 10

longitudinal waves

Answer 10

–oscillations are parallel to direction in which waves transfer energy

Question 11

eg of longitudinal waves

Answer 11

sound = vibrates to push/pull on air

Question 12

longitudinal waves have

Answer 12

compressions and rarefactions

Question 13

compressions and rarefactions

Answer 13

sound = vibrates to push/pull on air

Question 14

crests

Answer 14

top of waves

Question 15

troughs

Answer 15

-bottom of wave

Question 16

amplitude

Answer 16

height of wave
-max displacement of a point a wave from its undisturbed position

Question 17

bigger amplitude

Answer 17

= more energy the wave carries

Question 18

wavelength

Answer 18

distance from point on wave to equivalent point on adjacent wave
-or distance between 2 crests

Question 19

frequency

Answer 19

number of waves passing through a fixed point every second

Question 20

unit of frequency

Answer 20

hertz

Question 21

1 wave crest per second

Answer 21

1 Hz

Question 22

period

Answer 22

time taken for each wave to pass a fixed point

Question 23

formula for period

Answer 23

1/frequency