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Reflection S4P1 Students will investigate the nature of light using tools such as mirrors, lenses, and prisms. Investigate the reflection of light using a mirror and a light source.
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Question When you look at my face, it is easy to see, You’re looking at you, when you’re looking at me! What am I?
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Answer A mirror!
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How does light travel? Light waves REFLECT, or bounce, off the surfaces of most objects.
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How does light reflect? Angle of incidence Angle of reflection The ‘angle of reflection’ is always equal to the ‘angel of incidence’. on off
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Light can only be reflected in straight lines. Light can only be reflected in straight lines. on off
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Reflection of Light Reflection of Light Reflection occurs when a wave bounces back after striking a barrier. Reflection occurs when a wave bounces back after striking a barrier. Example: a reflection in a mirror. Example: a reflection in a mirror.
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REFRACTION ä Light waves REFRACT when they move from one transparent material to another, such as from air to glass or to water. ä TO REFRACT IS TO BEND. TO BEND.
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Essential Knowledge, Skills, and Processes ä Compare and contrast reflection and refraction Reflection Refraction
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Vocabulary ä Reflection: the bouncing of light from a surface ä Refraction: the bending of light as it passes through one material to another
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Review ä Explain the terms transparent, translucent, and opaque, and give an example of each. Plastic wrap Wax paper Aluminum Foil Transparent Translucent Opaque
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Vocabulary ä Transparent: materials that allow all light to pass through ä Translucent: letting light through but scattering it ä Opaque: materials that do not let light through ä Transmit: to send (as in sound or light). It also means light passing through an object.
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