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Light Crash Course Flashcards

(15 cards)

1
Q

What is light

A

A wave

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2
Q

Light

A

Electromagnetic radiation

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3
Q

Wavelength

A

Distance between crests of waves

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4
Q

Light with a longer wavelength has less energy

A

True

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5
Q

Light with loner wave length is

A

Redder

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6
Q

Light with shorter wavelength is

A

Bluer

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7
Q

Red temperature

A

Cooler

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8
Q

Blue temperature

A

Hotter

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9
Q

Hygins principle

A

R (distance traveled) = v (velocity) • t (time)

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10
Q

Doppler effect

A

Change in frequency of a wave for an observer moving relative to its source

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11
Q

Long distance between two objects results in?

A

Long wavelengths with low frequency

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12
Q

If the distance between two objects is short it produces

A

Shorter wavelengths with higher frequency

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13
Q

As an object moves farther from us it has a lower frequency and longer wavelengths. What is this called?

A

Red shift

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14
Q

When an object is moving towards us the wavelengths form higher frequencies and get shorter. What is this called?

A

Blue shift

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15
Q

The Doppler effect

A

It’s the apparent change in the frequency of a wave caused by the relative motion between the source of the wave and the observer

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