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Physics > Electromagnetic waves > Flashcards

Electromagnetic waves Flashcards

1
Q

How many are there?

A

7

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2
Q

Name them in order

Least to most

A

Radio Microwave Infrared Visible Ultraviolet X-ray Gamma

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3
Q

Most deadly?

A

Gamma

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4
Q

Least deadly

A

Radio

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5
Q

In the middle?

A

Visible light🌄

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6
Q

Use of gamma rays

A

Kill bacteria in food
Steralise medical equipment
Treat cancer

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7
Q

X-ray uses

A

Takes pictures of your bones

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8
Q

Ultraviolet uses

A

Tanning

Secutrity marking

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9
Q

Visible light uses

A

Helps us see

Photography

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10
Q

Infrared uses

A 
Radiant heaters
Grills
Remote controls
Thermal imaging
Night vision goggles
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11
Q

Microwave uses

A

Satellite communication

Cooking

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12
Q

Radio wave uses

A

Communication
Broadcasting
Radar

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13
Q

Why does microwaves help satelite communication?

A

Its the only wave that can go through the earths atmosphere, reach a sateliite, then sent back to earth🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄🥄

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14
Q

Gamma ray risks

A

Kills living cells in high doese

Causes cancer

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15
Q

X-ray risks

A

Causes cancer

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16
Q

Ultra-violet risks

A

Sunburn

Skin cancer

17
Q

Visible light risks

A

Damages cells in your retina in the eye👁👁

18
Q

Infrared risks

A

Can burn your tissues

Aka it can burn you

19
Q

Microwave risks

A

Can burn/boil tissues

20
Q

Radio wave risks

A

Probably none

21
Q

Colour of longest wave-length

A

Red♦️♦️♦️♦️♦️♦️

22
Q

Most penetrating wave?

A

Gamma

23
Q

Which electromagnetic wave has a lenght of cm?

A

Microwave

24
Q

Why are long radio waves used for international radio?

A

Because they reflect of the atmosphere and are long

25
Q

Things Electromagnetic waves have in common

A

All travel at same speed
Can travel through vaccum
They all carry energy
They are all transveres waves

Physics (12 decks)

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