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Year 8 Physics (EOT) > Light Revision > Flashcards

Light Revision Flashcards

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1
Q

What is the order of the electromagnetic Spectrum

A 
Gamma ray
x-ray
ultra violet 
visible light
infrared
microwave
radio
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2
Q

Which end of the Electromagnetic Spectrum has a shorter wavelength, higher frequency, higher energy?

A

The left hand side (the gamma ray) side

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3
Q

what is another name for white light?

A

Visible light

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4
Q

What type of wave is in the EM spectrum?

A

Transverse waves

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5
Q

What is the Electromagnetic Spectrum?

A

A family of radiation that includes visible light

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6
Q

What types of waves are there?

A

Transverse waves and longitudinal waves

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7
Q

What is the speed of visible light in a vacuum?

A

300,000,000

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8
Q

What colours are the primary colours?

A

Red, Blue, Green

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9
Q

What colours are the secondary colours?

A

Cyan, Magenta, Yellow

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10
Q

What do white and black light do?

A

White objects reflect all colours where as black objects absorb all colours

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11
Q

How does a colour filter work?

A

A colour filter only allows their own colour to transfer through a material, so if white light is projected onto a red filter, only red wavelengths transfer through all the other colours are absorbed

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12
Q

What is another name for a rainbow?

A

Spectrum

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13
Q

What are the colours in the spectrum?

A

Red, orange, yellow, green, blue, indigo, violet

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14
Q

Red light waves…

A

Have a low frequency and they don’t bend so much

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15
Q

Violet light waves…

A

Have a high frequency and bends a lot

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16
Q

What is it called when light can’t travel through it?

A

Opaque

17
Q

Refraction is when?

A

When light travels from one transparent medium to another it bends

18
Q

Where could you use a periscope?

A

To look around buildings or walls

19
Q

How is light produced?

A

Its produced by luminous objects such as the sun, candles ect

20
Q

Any object that produces light is called?

A

A light source

21
Q

How is light travelled?

A

In a straight line

22
Q

When light reflects of a mirror…

A

The incident ray is the light going towards the mirror, and the reflected ray is the light coming away from the mirror

Year 8 Physics (EOT) (1 decks)

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