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P12 Wave Properties
1.
In what type of wave are the vibrations perpendicular to the direction of travel of the wave?
a) longitudinal
b) transverse
2.
In what type of wave are the vibrations parallel to the direction of travel?
a) longitudinal
b) transverse
3.
Which type of wave shows areas of compression and rarefaction?
a) transverse
b) longitudinal
4.
What type of wave are the ripples on the surface of water?
a) transverse
b) longitudinal
5.
Which type of wave are sound waves?
a) transverse
b) longitudinal
6.
Which type of waves are shown in the image?
a) A = longitudinal B = transverse
b) A = transverse B = longitudinal
7.
A cork on the surface of water moves up and down and does not move along with the waves. This is evidence that….
a) waves travel beneath the surface and not on top.
b) the waves transfer water but not other materials because they are water waves.
c) waves only transfer energy (and information) and not matter.
d) that the waves are longitudinal rather than transverse.
8.
When smoke is released in front of a loud speaker the smoke does not visibly move even when the volume is turned up. This can be explained by….
a) smoke particles are just too big to be carried along with the air molecules.
b) the fact that the smoke particle just vibrate rapidly back and forth with the air molecules.
c) sound wave pass through the smoke as if it almost not there.
d) the heat from the smoke disrupts the rarefactions that could carry them along.
9.
In the diagram which letter represents the wavelength?
a) A
b) B
c) C
d) D
10.
In the diagram which letter represents the amplitude?
a) A
b) B
c) C
d) D
11.
In the diagram which letter represents the period?
a) A
b) B
c) C
d) D
12.
In the diagram what label should be added to the vertical axes?
a) frequency
b) amplitude
c) displacement
d) speed
13.
Which of the following is the best description of the frequency of a wave?
a) The speed that the waves go up and down.
b) How fast the vibrations go.
c) The number of waves passing a point in one second.
d) The number of waves the fit into each meter.
14.
Which equation correctly give the relationship between frequency and period of a wave?
a) period x frequency = 1
b) frequency = 1 / period
c) period = 1 / frequency
d) all three
15.
What is the usual unit for frequency?
a) Hz/s
b) m/s
c) Hz
d) M/Hz
16.
Calculate the frequency of a wave with a period of 4 s.
a) 4 Hz
b) 40 Hz
c) 0.125 Hz
d) 0.25 Hz
17.
Calculate the period of a wave with a frequency of 5 Hz.
a) 0.2 s
b) 25 s
c) 0.4 s
d) 5 s
18.
Which of the following is the wave equation that links wave speed, frequency, and wavelength?
a) wavelength = wave speed x frequency
b) wave speed = wavelength / frequency
c) frequency = wave speed x wavelength
d) wave speed = frequency x wavelength
19.
Calculate the speed of a wave that has a frequency of 12 Hz and a wavelength of 3 m.
a) 36 m/s
b) 4 m/s
c) 3 m/s
d) 15 m/s
20.
Calculate the speed of a wave that travels 24 m in 4 s.
a) 96 m/s
b) 6 m/s
c) 12 m/s
d) 24 m/s
21.
Calculate the wavelength of a soundwave of speed 330 m/s and frequency 55 Hz.
a) 6 m
b) 6 cm
c) 6 km
d) 6 mm
22.
Calculate the frequency of electromagnetic waves of wavelength 6 m. The speed of light is 3 x 10
8
m/s
a) 5 x 10
8
Hz
b) 5 x 10
7
Hz
c) 2 x 10
-8
Hz
d) 2 x 10
8
Hz
23.
If a sound wave passes into a material where the speed of the sound increases what will happen to the frequency and wavelength?
a) The wavelength will remain the dame and the frequency will decrease.
b) The frequency and wavelength will increase.
c) The frequency and wavelength will decrease.
d) The frequency will remain the same and the wavelength will decrease.
24.
How can the speed of sound be measured?
a) Use a radar speed gun.
b) Make a loud sound and time the echo from a wall that is a known distance away.
c) Use high speed photography.
d) Use a meter rule to measure the wavelength and an oscilloscope to measure the frequency.
25.
How can the speed of ripples on the surface of water best be measured?
a) Place a small cork on the surface and time how long it takes to travel a fixed distance.
b) Use a ruler to measure the wavelength and light gate and datalogger to measure the acceleration.
c) Photograph the ripples against a scale to measure the wavelength and use a strobe light to measure the frequency.
d) Use an ultrasonic distance sensor to measure the amplitude of the waves.
26.
At a boundary between two different materials waves can be…..
a) absorbed
b) reflected
c) transmitted
d) all three
27.
Which ray correctly shows transmission at a boundary?
a) A
b) B
c) C
d) D
28.
Which ray correctly shows reflection at a boundary?
a) A
b) B
c) C
d) D
29.
Which part of the ear vibrates leading to the sensation of sound?
a) ear cymbal
b) ear worm
c) ear drum
d) ear wax
30.
What is the normal frequency range of human hearing?
a) 2 Hz to 2 kHz
b) 40 Hz to 40 kHz
c) 20 Hz to 20 kHz
d) 4 Hz to 4 kHz
31.
Which of the following is the best explanation for the limited range of human hearing?
a) We have evolved to be able to sleep through the noise made by bats at night.
b) Low frequency sounds do not travel very far so it is not worth hearing them.
c) High frequency sounds only travel through water.
d) The vibrations of sounds waves can only transfer to the ear drum over a limited frequency range.
32.
How does the frequency of ultrasound compare to the range of human hearing?
a) It is lower.
b) It is the same.
c) It is similar but does not include the low frequencies.
d) It is higher.
33.
What happens to ultrasound waves when they meet a boundary between two different materials?
a) They are fully transmitted.
b) They are fully absorbed.
c) They are fully reflected.
d) They are partially reflected.
34.
What measurement does and ultrasound machine make to find the distance to a boundary?
a) The time for the reflections to reach the detector.
b) The frequency of the reflected waves.
c) The speed of the reflected waves.
d) The wavelength of the reflected waves.
35.
What are the two mains used of ultrasound?
a) remote controls and cooking
b) as a non-lethal weapon and to see through walls.
c) in microwave ovens and radar
d) medical and industrial imaging
36.
What type of seismic wave is longitudinal?
a) P-wave
b) S-wave
c) M-wave
d) D-wave
37.
What type of seismic wave is transverse?
a) P-wave
b) S-wave
c) M-wave
d) D-wave
38.
Which type of seismic wave cannot travel through liquids?
a) S wave
b) P wave
c) M wave
d) D wave
39.
Which type of seismic wave travels (at different speeds) through solids and liquids?
a) S-wave
b) P-wave
c) M-wave
d) D-wave
40.
Which of the following has been worked out from the study of seismic waves?
a) the mass of the Earth
b) the age of the Earth
c) the strength of the Earth’s magnetic field
d) the size of the Earth’s core
41.
What term is used to describe the use of high frequency sound to detect objects in deep water and to measure its depth?
a) deep water signalling
b) echo sounding or sonar
c) hf radar
d) sonic ranging
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