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WorksheetsLight and Sound Physics
Total questions: 20
Worksheet time: 33mins
Name
Class
Date
1.
Which of the following will you hear as a high pitch?
a)
sound wave with frequency of 10,000 Hz.
b)
sound wave with frequency of 50 Hz.
c)
sound wave with intensity of 10 dB.
d)
sound wave with intensity of 100 db.
2.
In which of the following mediums will sound travel fastest?
a)
brick
b)
air
c)
liquid water
d)
oil
3.
How does temperature of a medium affect the speed of sound waves?
a)
Temperature does not affect the speed of sound waves.
b)
As the temperature of a substance increases, sound waves in it move faster.
c)
As the temperature of a substance increases, sound waves in it move more slowly.
d)
As the temperature of a substance decreases, sound waves in it move faster.
4.
Why can you see most objects?
a)
light refracts through them.
b)
light reflects off them.
c)
they emit light.
d)
they absorb light.
5.
Which of the following types of waves cannot travel through space?
a)
ultraviolet
b)
radio
c)
light
d)
sound
6.
Which of the following has the shortest wavelength?
a)
green light
b)
X-rays
c)
radio waves
d)
infrared waves
7.
In which of the following materials will LIGHT travel fastest?
a)
vacuum
b)
air
c)
water
d)
glass
8.
In which of the following materials will SOUND travel fastest?
a)
vacuum
b)
air
c)
water
d)
glass
9.
What causes light waves to refract?
a)
The speed of light is reduced to zero.
b)
The speed of light remains constant.
c)
The speed of light changes from one medium to the next.
d)
The light is repelled (pushed) by some materials.
10.
This image shows oscilloscope reading of three sound waves. Which wave has the highest frequency?
a)
wave A
b)
wave B
c)
wave C
d)
more information is needed.
11.
Why does sound travel at different speeds through different materials?
a)
because sound transmission involves interaction between particles in matter.
b)
because matter causes sound to echo.
c)
because long wavelengths travel farther than shortwavelengths.
d)
because sound travels fastest in low density materials.
12.
What is one difference between sound waves and light waves?
a)
Only sound waves can have different wavelengths.
b)
Only light waves can be reflected.
c)
Only sound waves can travel through matter.
d)
Only light waves can travel through a vacuum.
13.
Which is the best example of a highamplitude, highfrequency sound?
a)
a mosquito buzz.
b)
the moo of a cow.
c)
a police siren.
d)
thunder.
14.
If a light ray strikes a mirror at an angle of 30 degrees to the normal,what will its angle of reflection be?
a)
parallel to the normal.
b)
30 degrees to the normal.
c)
60 degrees to the normal.
d)
perpendicular to the normal.
15.
The two waves below are traveling at the same speed. Which statement best describes the difference between the waves?
a)
Wave A has a higher frequency than wave B.
b)
Wave A has a lower frequency than wave B.
c)
Wave A has a higher amplitude than wave B.
d)
Wave A has a lower amplitude than wave B.
16.
As frequency increases, wavelength ________.
a)
remains constant
b)
increases
c)
decreases
d)
becomes faster
17.
Why do you see lightening before you hear thunder?
a)
Thunder takes 10 seconds to travel before you hear thunder?
b)
Sound travels faster than light.
c)
Sound travels slower than light.
18.
Which material best absorbs sound waves in a room?
a)
Heavy curtains
b)
Hardwood floors
c)
Brick walls
d)
Cement floors
19.
Pitch is described as...
a)
closely packed molecules that carry wave patterns.
b)
the vibration of air molecules
c)
something a baseball player does
d)
the highness or lowness of sound
20.
Why can light travel through a vacuum while sound cannot?
a)
Light has superpowers.
b)
Sound is a mechanical wave and therefore needs matter to travel through, while light is not a mechanical wave so it does not need matter to travel through.
c)
Sound travels slower.
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