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- 1. Multiple Choice
The Law of __ states that the angle of incidence and the angle of reflection are equal to each other.
Reflection
Refraction
Diffraction
Dispersion
- 2. Multiple Choice
What is the NORMAL to a surface?
a pretty average line
a line parallel to the surface
a line perpendicular to the surface
- 3. Multiple Choice
In what way does the law of reflection hold for diffuse reflection?
each incident light ray obeys the law of reflection and the different angles each ray encounters at the surface causes reflection in the SAME direction
each incident light ray obeys the law of reflection but the different angles each ray encounters at the surface causes reflection in many DIFFERENT directions
- 4. Multiple Choice
True or False: The law of reflection holds true for both sound waves and light waves.
True
False
- 5. Multiple Choice
Why does sound travel so well over water?
The air close to the water surface is cooler than the air higher up. The wave fronts bend TOWARD the faster medium and AWAY from the water surface.
The air close to the water surface is cooler than the air higher up. The wave fronts bend AWAY from the faster medium and back down TOWARD the water surface.
- 6. Multiple Choice
Fill in the blank:
The return of a wave back into its original medium is called __.
Refraction
Reflection
Diffraction
Dispersion
- 7. Multiple Choice
__ is the bending of a wave as it crosses the boundary between two media at an angle.
Refraction
Reflection
Diffraction
Dispersion
- 8. Multiple Choice
When a wave crosses a surface at an angle from one medium into another, why does it change directions as it moves across the boundary into the new medium?
because wave speed depends on temperature and two different mediums will always have different temperatures
because it does, man.
because wave speed changes with different mediums and parts of the wave front begin to travel at different speeds bending the wave
- 9. Multiple Choice
Does refraction occur for both sound and light waves?
Yes
No
- 10. Multiple Choice
Does refraction tend to make objects submerged in water seem shallower or deeper than they really are?
Deeper
Shallower
- 11. Multiple Choice
What is causing the ground to look shiny in this picture?
The sun is heating the ground causing the air right above it to be much hotter than the surrounding air. Reflected light from the car is bent AWAY from the warmer air UP to the camera/viewer.
The sun is heating the ground causing the air right above it to be much hotter than the surrounding air. Reflected light from the car is bent TOWARDS the warmer air DOWN to the camera/viewer.
- 12. Multiple Choice
Is a mirage a result of refraction or reflection?
Refraction
Reflection
Both!
- 13. Multiple Choice
As light passes through a transparent medium, it undergoes an absorption-reemission process. Which interacts more with a medium, light of high frequencies or light of low frequencies? (i.e. which is bent more?)
Low frequencies
High frequencies
- 14. Multiple Choice
How is a raindrop similar to a prism?
both have a lower refractive index than air
both have the same refractive index
both refract white light dispersing it into its constituent colors
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