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Light and Shadows
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Why do transparent objects not make good shadows?
They don't stop a lot of light.
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What surfaces are better reflectors: rough or smooth?
Smooth, like mirrors.
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How do mirrors work?
The light is reflected on their surface.
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A wall is...
Opaque
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A glass is...
Transparent
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What happens to shadows made by the Sun during the day?
They change direction and shape.
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How do we see things?
Light travels from a light source, bounces off an object and gets to our eyes.
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Why is the Moon not a light source?
Because it reflects the sunlight.
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Name three natural light sources.
Sun, stars, fire, etc.
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What happens when light gets to an opaque object?
If's blocked and forms a shadow.
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Name the 3 things we need to make a shadow.
Object, light source, screen (surface).
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How can I change a shadow's size?
Closer = bigger, far away=smaller
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