Light lessons

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Transcript of Light lessons

Page 1: Light lessons
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What do you know about Mirrors?

1. We see objects because _____. a. light is reflected off of objects b. objects generate their own light c. both A and B

2. Possible shape (s) of mirrors are ___. a. Flat b. Concave

c. Convex d. All of the above

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3. Convex mirrors cause light to ____.

a. reflect up only

b. diverge (spread) apart

c. reflect down only

4. Concave mirrors cause light to ___.

a. diverge (spread) apart

b. reflect straight

c. converge to a focal point

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1. Which two rules are NOT true about

reflection?

a. light travels in a straight line

b. reflection is in an unpredictable pattern

c. Angles of incidence and reflection are

determined by the curve of the mirror

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What do you know about lenses?

1. Refraction of light is _____ .

a. Change in direction

b. change in speed

c. Both A and B

7. Light travels faster in ____.

a. air b. water c. no difference

8. Eye glasses work because they _____.

a. change the speed of light

b. change direction of light

c. Both A and B

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10. Prisms break light into ____.

a. dominant and recessive colors

b. seven colors of the rainbow

c. light colors vs. dark colors

1. Telescopes are _____.

a. magnification of light

b. both magnification and reflection of light

c. reflecting with mirrors

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Light Fact 1:

Light always travels in straight lines

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Light is energy that travels in waves of different wavelengths.

Light Fact 2:

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Light Fact 3:The different wavelengths create the energy we

know as X-rays, Ultraviolet, Visible, Infrared, Microwaves and Radio waves.

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Light Fact 4:

The reflection of light from surfaces allows us to see objects that do not emit their own light.

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Light Fact 5:

• When charged particles from the sun are captured by the Earth’s magnetic field it creates an effect we call the AURORA BOREALIS or Northern Lights

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Light Fact 6:

• Convex mirrors cause waves to diverge

• These behave as if there is a focus behind the mirror, called a virtual image.

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Light Fact 7:

Only a convex lens can form a real image. Real images are inverted and smaller than the actual image

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Learn More about Mirrors!

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Learn More about Lenses!

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NOW, what do you know about Mirrors?

1. We see objects because _____.

a. light is reflected off of objects

b. objects generate their own light

c. Both A and B

2. Possible possible shape(s) of mirrors are ___. a. Flat

b. Concave

c. Convex

d. All of the above

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3. Convex mirrors cause light to ____.

a. reflect up only

b. diverge (spread) apart

c. reflect down only

4. Concave mirrors cause light to ___.

a. diverge (spread) apart

b. reflect straight

c. converge to a focal point

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• Which two are NOT rules about reflection?

a. light travels in a straight line

b. reflection is in an unpredictable pattern

c. Angles of incidence and reflection are determined by the curve of the mirror

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What do you know about lenses?1. Refraction of light is _____ . a. Change in direction b. change in speed c. Both A and B

7. Light travels faster in ____. a. air b. water c. no difference

11. Eye glasses work because they _____. a. change the speed of light b. change direction of light c. Both A and B

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1. Telescopes _____.

a. magnify light

b. both magnify and reflect of light

c. reflect light

10. Prisms break light into ____.

a. dominant and recessive colors

b. seven colors of the rainbow

c. light colors vs. dark colors

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