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Cards In This Set
| Front | Back |
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Name some natural lights?
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Sun, stars, fireflies
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Name some made lights?
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Flashlights, lantern, candles
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Why is light important?
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For sight
for heat provides us with food |
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Light comes from 3 sources, what are they?
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Direct light- sun, starts, volcano magma
indirect light- fireflies, burning matches, television reflected light- mirrors, moon, planets |
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Light normally travels which way?
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Straight lines
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What happens when lights moves in dense material?
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It slows down
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Describe refraction?
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The bending of light as it passes through transparent objects.
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How does a sundial work?
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Hours were measured by where the shadow would fall on the sundial and what the length of the shadow was.
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How is a shadow formed?
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Shadows are cast when the light is blocked by an opaque material/object?
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How do you made a shadow larger?
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By moving the objects closer to the light source or away from the screen.
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How do you made a shadow fuzzier?
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By moving objects closer to the light source or away from the screen.
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Transparent objects allow:
a.. let no light through. They cast a dark shadow. You cannot see things on the other side. b. allow some light through, but not all. They cast a light or fuzzy shadow. c. light through easily. They leave no shadow and you can see objects clearly through them. |
Answer c
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Translucent objects allow:
a.. let no light through. They cast a dark shadow. You cannot see things on the other side. b. allow some light through, but not all. They cast a light or fuzzy shadow. c. light through easily. They leave no shadow and you can see objects clearly through them. |
Answer b
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Opaque objects allow:
a.. let no light through. They cast a dark shadow. You cannot see things on the other side. b. allow some light through, but not all. They cast a light or fuzzy shadow. c. light through easily. They leave no shadow and you can see objects clearly through them. |
Answer a
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