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KS3 Light KS3 Light

W Richards

Worthing High School

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Wave slows down and bends towards the normal due to entering a more dense medium

Wave speeds up and bends away from the normal due to entering a less dense medium

Wave slows down but is not bent, due to entering

along the normal

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Refraction Refraction

Refraction is when waves ____ __ or slow down due to travelling in a different _________. A medium is

something that waves will travel through. When a pen is placed in water it looks like this:

In this case the light rays are slowed down by the water and are _____, causing the pen to look odd. The two

mediums in this example are ______ and _______.

Words – speed up, water, air, bent, medium

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Key Words Key Words

• Light travels through this type of material

• Only some of the light travels through this type of material

• Light cannot travel through this type of material

• Light is taken in

• Light bounces off

• Light travels through

Transparent Translucent

Opaque

Transmitted Absorbed

Reflected

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