09 Properties of Light WAVES Flashcards

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1
Q

amplitude

A

can be ignored

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2
Q

FREQUENCY and WAVELENGTH

A

are linked.

If one goes up, the other goes down.

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3
Q

what changes the colour

A

Changing the frequency and wavelength of a light wave changes its COLOUR.

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4
Q

What does changing the frequency and wavelength of a light wave change

A

the colour

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5
Q

whathas the lowest frequency/longest wavelength.

A

RED light has the lowest frequency/longest wavelength.

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5
Q

what has the lowest frequency/longest wavelength.

A

RED light has the lowest frequency/longest wavelength.

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6
Q

what has the highest frequency/shortest wavelength.

A

VIOLET light has the highest frequency/shortest wavelength.

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7
Q

what is red

A

RED light has the lowest frequency/longest wavelength.

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8
Q

what is violet

A

VIOLET light has the highest frequency/shortest wavelength.

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9
Q

what does all the colours of the rainbow make

A

white light

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10
Q

what does all the colours of the rainbow make

A

white light

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11
Q

what is white light made up of

A

White light is made up of all the colours of light added together.

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12
Q

what is the spectrum

A

RED, ORANGE, YELLOW, GREEN, BLUE, INDIGO, VIOLET.

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13
Q

what is RED, ORANGE, YELLOW, GREEN, BLUE, INDIGO, VIOLET.

A

the order of the spectrum

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14
Q

why can we see colours

A

Objects around us appear to be different colours because they absorb and reflect different parts of the spectrum.

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15
Q

why does a white object appear white

A

A white object looks white because it reflects all the colours.

16
Q

why does a red object appear red

A

When you look at a red object in white light it looks red because it reflects the red frequencies and absorbs the others.

17
Q

why does a black object appear black

A

Black objects absorb all the colours in white light.