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22 Cards in this Set
- Front
- Back
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Objects that produce their own light are sources of what kind of produced light?
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naturally produced light sources
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Give 2 examples of naturally produced light.
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Sun and stars
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What kind of light sources are made and controlled by people?
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artificially produced light sources
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Give examples of artificially produced light.
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Flashlight and electric light bulb
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True or false. Light is a kind of energy.
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True
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Taking on extra energy causes atomes to become more:
a. active b. not active |
a. active
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Some of the extra energy may be released as _________?
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light
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Which travels faster light or sound?
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light
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What can light travel through?
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gases, liquids and some solids.
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The bouncing back of light from a surface is called?
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reflection
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When a light is scattered in different directions, what type of surface is it reflected on?
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rough surface
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The bending of light when it travels through 2 different types of matter is called?
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refraction
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How can refraction happen?
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Because the SPEED OF LIGHT is NOT THE SAME in all types of matter.
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Can light bend if
A. It passes STRAIGHT through 2 different types of matter B. It passes through 2 different types of matter are at an ANGLE? |
Yes. It can bend (refract) when it passes between 2 different types of matter at an ANGLE.
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When light travels through different matter at an ANGLE what happens to it?
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it is bent or refracted
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Light passes straight through which one?
A. different types of matter B. same types of matter |
A. different types of matter
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Name some kinds of transparent matter.
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windows, eyeglass lenses (glass and plastic)
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What kid of matter lets light through but scatters it in many directions?
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Translucent matter
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Name some kinds of translucent matter.
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lamp shade, frosted glass, waxed paper because you cannot see clearly through it.
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What kind of matter blocks light?
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Opaque matter
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Can you see through opaque? Give some examples.
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No. classroom wall, my body, floor
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What is the difference between reflection and refraction?
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Reflection is when light BOUNCES off matter.
Refraction is when light is BENT because the speed of light is not the same or it is at an angle |
