Light Jeopardy 1

transcript

25 pt.

10 pt.15 pt.20 pt.

25 pt.

10 pt.15 pt.20 pt.

25 pt.

10 pt.15 pt.20 pt.

25 pt.

10 pt.15 pt.20 pt.

25 pt.

10 pt.15 pt.20 pt.

If you stand 2ft from a plane mirror, how far away is your image?

Describe the image in a diverging mirror:

•Virtual•Right-Side-Up•Smaller than the object•Only visible when looking in the mirror

•(2 of 4 required for the points)

Is this a Diverging or Converging mirror?

Converging

Is this a Diverging or Converging mirror?

1-20Parallel light rays striking a converging mirror all do what?

1-20AParallel light rays striking a converging mirror all do what?

Go through the focus point.

1-25What are the 2 names of this mirror, and what do those names mean?

Convex: Shape of the mirror

Diverging: Affect on light

(spreads light out)

What are the 2 names of this mirror, and what do those names mean?

2-5What is the Law of Reflection?

2-5AWhat is the Law of Reflection?

Angle of Incidence = Angle of Reflection

2-10Draw the Ray Tracings to determine the reflected image. NO NOTES!!!

2-10ADraw the Ray Tracings to determine the reflected image. NO NOTES!!!

2-20Draw the Ray Tracings to determine the reflected image. Show ALL Rays

that could be used. NO NOTES!!!

2-20ADraw the Ray Tracings to determine the reflected image. Show ALL Rays

that could be used. NO NOTES!!!

What is required for the refraction of light?

The light must change speed.

3-10If light slows down entering a material, does it refract towards

or away from the normal?

3-10AIf light slows down entering a material, does it refract towards

or away from the normal?

Towards

3-15Draw the path of the light as it moves through and out of these materials:

(Show normal lines)

n = 1.5 n = 1.0 n = 2.5

3-15ADraw the path of the light as it moves through and out of these materials:

(Show normal lines)

n = 1.5 n = 1.0 n = 2.5

3-20What happens if light strikes a surface beyond the ‘critical angle’?

3-20AWhat happens if light strikes a surface beyond the ‘critical angle’?

Total internal reflection

3-25When light enters a medium with a higher index of refraction, the speed of

light decreases. The change in what property of a light wave causes this?

3-25AWhen light enters a medium with a higher index of refraction, the speed of

light decreases. The change in what property of a light wave causes this?

4-5What is Snell’s Law?

4-5AWhat is Snell’s Law?

n1sin(θ1) = n2sin(θ2)

4-10What is the index of refraction for a material in which the speed of light is

4-10AWhat is the index of refraction for a material in which the speed of light is

n = C/V

V = 0.2C

n = C / 0.2C

4-15The light below travels from water to air. At what angle will the light travel

in the air?

nwater = 1.33 nair = 1

(nwater)sin(θwater) = (nair)sin(θair)

1.33sin20 = 1sin(θair)

θair = 27°

The light below travels from water to air. At what angle will the light travel

in the air?

4-20Type Question Here

Light travels from crown glass (n = 1.52) into diamond (n = 2.42). If the angle of refraction

is 15°,what was the angle of incidence?

(nglass)sin(θglass) = (ndiamond)sin(θdiamond)

1.52sin(θglass) = 2.42sin(15°)

θglass = 30°

4-25What is the critical angle of a light ray that is travelling from the Goron’s

Ruby (n = 3.6) to air?

(nruby)sin(θc) = (nair)sin(90°)

3.6sin(θc) = 1*1

θruby = 16.1°

What is the critical angle of a light ray that is travelling from the Goron’s

Ruby (n = 3.6) to air?

5-5What super hero could travel nearly the speed of light?

The Flash

What super hero could travel nearly the speed of light?

5-10What is this?

5-10AWhat is this?

5-15The voice of Kirby in “The Brave Little Toaster” was also the voice of what famous cereal spokesman?

5-15AThe voice of Kirby in “The Brave Little Toaster” was also the voice of what famous cereal spokesman?

Tony The Tiger(Thurl Ravenscroft)

5-20The new $10 bill has a phrase in large red letters. Where is this phrase from?

(NO PEEKING!!!)

The Constitution(The Preamble)

5-25Decode this secret message:

5-25ADecode this secret message:

Daily Double

Light travels from crown glass (n = 1.52) into diamond (n = 2.42). If the angle of refraction

is 15°,what was the angle of incidence?

Light Jeopardy 1

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