light Flashcards by Ellie McCarthy

Q

what type of waves does light travel in?

A

transvers

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Q

what, unlike sound, can light travel through?

A

a vaccume

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Q

Why are some things translucent?

A

They let all light pass through them.

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Q

The angle of incidence always equals what?

A

The angle of exodus

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Q

Why does light refract?

A

Its shape changes

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Q

What type of lens focuses light on a point?

A

Converging

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Q

What are the three primary colours in light?

A

Red, blue and yellow

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Q

What is the retina?

A

The light-sensitive section at the back of your eye

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Q

What type of reflection is seen in a mirror?

A

Normal

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