1. Jeopardy
Science 9
Chapter 12

2. REFLECTION
REFRACTION
SOUND
LIGHT
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3. Sound waves are what type
longitudinal
Sound waves are what type
of wave?
Row 1, Col 1

4. What color would a red rose
Red flower (green stem)
What color would a red rose
look under white light?
1,2

5. State the Law of Reflection.
The angle of incidence = the angle of reflection
State the Law of Reflection.
1,3

6. The bending of light as it passes through different mediums.
What is refraction?
1,4

7. What determines the speed
The MEDIUM it travels through.
What determines the speed
of sound?
2,1

8. If you are nearsighted (can’t see far), what type of lenses
diverging
If you are nearsighted (can’t see
far), what type of lenses
do you need?
2,2

9. What type of mirror do stores use to be able to see around
convex
What type of mirror do stores
use to be able to see around
corners?
2,3

10. Which type of lens brings
converging
Which type of lens brings
light rays together?
2,4

11. What is frequency measured
hertz (Hz)
What is frequency measured
in?
3,1

12. Light waves produce color. wavelength being absorbed.
False, the color we see is the REFLECTED wavelength.
Light waves produce color.
The color we see is that
wavelength being absorbed.
TRUE or FALSE?
3,2

13. What are the two types of reflection we talked about?
Smooth surface and diffuse reflection
What are the two types of
reflection we talked about?
(think of the surfaces light
reflects off of)
3,3

14. When light moves from air to water, how does the speed
The light ray would slow down
When light moves from air to
water, how does the speed
change?
3,4

15. What frequency range can humans
20 Hz – 20,000 Hz
What frequency range can humans
hear?
4,1

16. Refraction occurs when light passes through different ___________
Mediums and/or lenses
Refraction occurs when light passes through different ___________
4,2

17. If a light ray comes in at 30° to
the normal, what is the
angle of reflection?
4,3

18. What main part of the eye
lens
What main part of the eye
refracts light?
4,4

19. Small instruments: high pitch, high frequency, short wavelength
Small instruments: high pitch, high frequency, short wavelength. Large instruments: low pitch, low frequency, longer wavelength
Describe PITCH, FREQUENCY, and WAVELENGTH in terms of musical instruments.
5,1

20. What is the spectrum called that includes all possible kinds
Electromagnetic spectrum
What is the spectrum called that
includes all possible kinds
of light?
5,2

21. Flat mirrors form what type of image?
Virtual images
Flat mirrors form what
type of image?
5,3

22. Explain how a mirage is formed (what is it?)
When heat from the ground is trapped by the cool air above it. (temperature differences between air and ground)
Explain how a mirage is
formed (what is it?)
5,4