1. Sing it loud, sing it strong
Ch. 14 Sound & Light
Wordly Wise
Sing it loud, sing it strong
Ride the wave!
Yadda Yadda Yadda
Potpourri
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Last Chance

2. $100 Question from Wordly Wise
Clear glass is an example of a(n) _________
material.

3. $100 Answer from Wordly Wise
transparent

4. $200 Question from Wordly Wise
Light rays cannot pass through a material
that is ____________.

5. $200 Answer from Wordly Wise
opaque

6. $300 Question from Wordly Wise
A sound wave with a high frequency will also have
a high ______________.

7. $300 Answer from Wordly Wise
Pitch

8. $400 Question from Wordly Wise
The distance from one point on a wave
to the next similar point on a wave is
known as _____________.

9. $400 Answer from Wordly Wise
wavelength

10. $500 Question from Wordly Wise
___________ is bending that results from a
light wave changing speed as it moves at an
angle from one medium to another.

11. $500 Answer from Wordly Wise
Refraction

12. $100 Question from Ride the wave!
When a light wave is taken in by an object,
__________ occurs.

13. $100 Answer from Ride the wave!
absorption

14. $200 Question from Ride the wave!
Which item can a sound wave NOT travel
through? (solid, liquid, gas, vacuum) Explain
why.

15. $200 Answer from Ride the wave!
Sound waves cannot travel through a vacuum because
there are no matter particles to carry the sound.

16. $300 Question from Ride the wave!
True/False: To hear a higher-pitched note on a guitar string
you should pluck the string harder. (False statements need to
be corrected.)

17. $300 Answer from Ride the wave!
False! To hear a higher-pitched note on a
guitar string, you should shorten the string by
pressing on the frets.

18. $400 Question from Ride the wave!
True/False: Radio waves, ultraviolet rays, and gamma
rays are all longitudinal waves.

19. $400 Answer from Ride the wave!
False! They are all part of the electromagnetic
spectrum.

20. $500 Question from Ride the wave!
How does an echo form?

21. $500 Answer from Ride the wave!
When a sound wave travels and hits a hard, smooth
surface, the wave reflects or bounces back, resulting in
an echo.

22. $100 Question from Sing it loud, sing it strong
Materials that let some light rays pass through but scatter some of the other rays are ____________.

23. $100 Answer from Sing it loud, sing it strong
translucent

24. $200 Question from Sing it loud, sing it strong
What is sound?

25. $200 Answer from Sing it loud, sing it strong
Sound is a form of energy carried by waves
through matter.

26. $300 Question from Sing it loud, sing it strong
What are two types of waves?

27. $300 Answer from Sing it loud, sing it strong
Two types of waves are transverse and longitudinal.

28. $400 Question from Sing it loud, sing it strong
What type of pitch does a high-frequency sound have?

29. $400 Answer from Sing it loud, sing it strong
A high frequency sound has a high pitch.

30. $500 Question from Sing it loud, sing it strong
A bird perched in a tree hears the chirping of
another bird. A whale hears the songlike sound
made by another whale swimming near it. Which
sound travels faster, the bird’s chirping or the
whale’s singing? Explain how you know.

31. $500 Answer from Sing it loud, sing it strong
Since sound travels more quickly in water than in air, the
sound produced by the whale travels faster.

32. $100 Question from Yadda Yadda Yadda
A wave bouncing back off an object or
surface is known as ____________.

33. $100 Answer from Yadda Yadda Yadda
reflection

34. $200 Question from Yadda Yadda Yadda
A tuba is played at a school function. You are
seated in the front row and your little brother covers his
ears. Your parents decide to move to the back row. Your
little brother uncovers his ears and asks you why it sounds
different in the back of the room. Explain why.

35. $200 Answer from Yadda Yadda Yadda
The reason it sounds different is because when you are in front of the
tuba player, the sound is very loud and as the sound travels through
more matter and farther away, it get softer.

36. $300 Question from Yadda Yadda Yadda
Why does a light wave travel more slowly
through a gas than through a vacuum?

37. $300 Answer from Yadda Yadda Yadda
When a light wave enters a gas, it interacts with the gas particles.
This slows the speed of the wave. Because a vacuum is empty space
that contains no particles of matter, there is nothing to slow down the
light wave.

38. $400 Question from Yadda Yadda Yadda
Explain why a wave with a short wavelength
has a high frequency.

39. $400 Answer from Yadda Yadda Yadda
Wavelength refers to the distance between one point on a wave
to the next similar point on a wave. Frequency refers to the
number of waves that pass a point in one second. If a wave has
a short wavelength, many more cycles will be able to be completed
in one second, which means the frequency will be high.

40. $500 Question from Yadda Yadda Yadda
Why does sound travel fastest in solids and slowest
in gases?

41. $500 Answer from Yadda Yadda Yadda
The particles in most solids are more strongly attracted to each other.
They respond and bounce back fairly quickly to sound vibrations. So
sound travels fastest in solids. The particles in gases are much less
attracted to each other, and they do not respond and bounce back easily
to sound vibrations. So sound travels slowest in gases.

42. $100 Question from Potpourri
A(n) _____________ is the part of a sound wave
where particles are close together.

43. $100 Answer from Potpourri
compression

44. $200 Question from Potpourri
The number of times a wave makes a complete
cycle in a second is its ______________.

45. $200 Answer from Potpourri
frequency

46. $300 Question from Potpourri
How does a wind instrument produce sound?

47. $300 Answer from Potpourri
A musician blows air across a hole in the instrument
and the particles in the column of air vibrate, producing
sound.

48. $400 Question from Potpourri
What colors of light make up the visible
spectrum?

49. $400 Answer from Potpourri
Red, Orange, Yellow, Green, Blue, and Violet

50. $500 Question from Potpourri
How is light refracted?

51. $500 Answer from Potpourri
When light rays pass from one medium to another
at an angle, they change speed. The change in speed
causes the light to refract or bend.

52. Last Chance What happens to light that is refracted through a
convex lens? A concave lens?

53. Last Chance Answer In a convex lens, rays bend in toward the middle of
the lens. In a concave lens, rays bend out toward the
edges of the lens.