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Science > 12.2 > Flashcards

12.2 Flashcards

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0
Q

Evidence for wave model of light

A

Light experiences reflection refraction diffraction and interference

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1
Q

Evidence supporting particle model of light

A

Light can knock off metals and travel through a vacuum

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2
Q

Intensity is proportional to…

A

Amplitude

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3
Q

Frequency is proportional to…

A

Energy

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4
Q

Brightness depends on..

A

Intensity and distance

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5
Q

Reflection

A

The bouncing back of a wave when it meets a surface or a boundaries

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6
Q

Diffraction

A

The bending of waves as they pass an edge or an opening

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7
Q

Refraction

A

The bending of a wave as they pass from one medium to another

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8
Q

Violet light is bent more than red because…

A

It travels slower than red

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9
Q

Why objects have colors

A

Because they reflect certain wavelengths of light

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10
Q

Waves are defined as transfers of

A

Energy

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11
Q

…make objects appear in different direction

A

Refraction

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12
Q

Intensity

A

Amount of light or energy flows through an area of space

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13
Q

Gamma rays

A

Shortest wave length

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14
Q

Radio waves

A

Longest wave length

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15
Q

The speed of sound depends on how often…

A

molecules of the medium collide and transmit energy

16
Q

Light is bent when it passes through different mediums because…

A

The speed is different through different mediums

17
Q

Photon

A

A particle of light
Don’t have mass
Bundles of energy

18
Q

X-rays and gamma rays have…

A

Very high energy

19
Q

Light can be modeled as

A

Electromagnetic wave or photons

20
Q

Energy of a photon is proportional to

A

Frequency of the corresponding light wave

21
Q

Light travels slowly in a

A

Medium air or water

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