Topic 6 Refkection Flashcards

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1
Q

What three things can happen when waves arrive at the boundary between two different materials

A

The waves are absorbed by the material - and transfers energy to the materials energy stores
The waves are transmitted - waves carry on travelling through the material this often leads to refraction
The waves are reflected

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2
Q

What does the angle of incidence equal

A

The angle of a reflection

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3
Q

What is the angle of incidence

A

The angle between incoming wave and the normal

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4
Q

What is the angle of reflection

A

The angle between the reflected wave and the normal

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5
Q

What is the normal

A

An imaginary line that is perpendicular to the surface at the point of incidence

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6
Q

What is the normal usually shown by

A

Dotted line

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7
Q

What is specular reflection

A

When a wave is reflected in a single direction by smooth surface

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8
Q

What is diffused reflection

A

When a wave is reflected by rough surface and reflected rays are scattered in lots of different directions

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9
Q

Why do different types of reflection happen

A

Because the normal is different for each incoming ray which means the angle of incidence is different for each ray

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10
Q

What happens when light is reflected by a rough surface

A

The surface appears more Matt and you don’t get a clear reflection of objects

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