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Science
Chapter 14
Light and Sound
Name:______________________
Question
1. What is compression?
Note
1. Compression is the part of
the wave where the particles
are bunched together.
2. What is frequency?
2. Frequency is the number
of waves that pass a point in
a certain amount of time.
3. What is wavelength?
3. A wavelength is the
distance between a point on
one wave and a similar point
on the next wave.
4. Where does sound energy
come from?
4. Sound energy come from
vibrating objects.
5. Which type of wave is a
sound wave?
5. A sound wave is a
longitudinal wave.
6. Where would you travel
in silence?
6. In outer space you would
travel in silence.
7. How are light rays and
sound waves similar?
7. They both carry energy.
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8. On a violin the first
string vibrates more quickly
than the second string.
Which string has a higher pitch?
8. The first string has a
higher pitch because it
vibrates more quickly.
9. How does an echo form?
9. An echo forms when a
sound wave travels and hits a
hard, smooth surface, the
wave reflects or bounces back.
10. Which part of the ear is
filled with liquid that
vibrates, causing little hairs
to move?
10. The cochlea is the part of
the ear that causes little
hairs to move.
11. When does light refract?
11. Light refracts when light
moves from one medium to
another.
12. What is an example of a
translucent material?
12. A stained glass window
is an example of translucent
material.
13. What is absorption?
13. When an object takes in
the light wave, it will become
a form of heat energy.
14. How does light behave
14. The light rays pass
when it strikes a transparent
through the object when
object?
they stricke a transparent object.
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15. Why are wood and
aluminum foil both
considered opaque
materials?
15. They are opaque
materials because neither
material lets light pass through it.
16. What part of the eye
controls how much light
enters the eye?
16. The iris controls how
much light enters the eye.
17. What are three
examples of the
electromagnetic spectrum?
17. yellow light, ultraviolet
waves, X rays
18. What happens to light
that passes through a
concave lens?
18. The light rays spread
apart.
19. What does a convex lens
look like?
19. a convex lens is
thicker in the middle than at
the edges, like a football
Be able to write about the following notes without a wordbank.
20. What will light do when
20. When light moves to a
it moves to a different
different medium it will bend
medium?
or refract.
21. What are the two major
types of waves?
21. transverse waves
longitudinal waves
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22. List the following material
that sounds travels the fastest
through the material that sound
travels the slowest through:
gas, solid, liquid
23. What are two sources of
light?
24. How do these sources of
light help us?
22. solid, liquid, gas
23. sun, fire
24. The sun warms the Earth and
allows plants to make their own
food. Fire, provides warmth, light,
and allows people to cook food.
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