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1st science) Physics > P13 Electromagnetic spectrum > Flashcards

P13 Electromagnetic spectrum Flashcards

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1
Q

What is a source of radio waves?

A

Sun, radio, TV.

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2
Q

What is a source for microwaves?

A

Satellite communication, sun, microwave oven.

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3
Q

What is a source for Infrared radiation?

A

Sun, infrared camera.

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4
Q

What is a source for visible light?

A

Filament lamp, sun.

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5
Q

What is a source for ultraviolet?

A

UV lights, sun.

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6
Q

What is a source for x-rays?

A

X-ray machines, x-ray camera, sun.

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7
Q

What is a source for gamma rays?

A

Gamma camera, sun.

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8
Q

What effects do radio waves have on the body?

A

None.

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9
Q

What effect do microwaves have on the body?

A

None.

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10
Q

What effect does infrared radiation have on the body?

A

If skin gets too hot can burn.

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11
Q

What effect does visible light have on the body?

A

Blindness.

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12
Q

What effect do x-rays have on the body?

A

Cell damage.

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13
Q

What effect do gamma rays have on the body?

A

Can treat cancer, damages cells.

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14
Q

What can radio waves be used for?

A

Watching TV, listening to a radio.

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15
Q

What can infrared radiation be used for?

A

Night vision cameras.

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16
Q

What can visible light be used for?

A

Vision.

17
Q

What can ultraviolet be used for?

A

Fluorescent lamp.

18
Q

What can x-rays be used for?

A

Airport luggage, x-ray machines, x-ray camera.

19
Q

What can gamma rays be used for?

A

Treating cancer, damaging cells, sterilising medical equipment.

20
Q

What is a main use for radio waves?

A

TV.

21
Q

Why is the sun a source for all the electromagnetic waves?

A

Sun is a black body.

22
Q

How do x-rays work?

A

Electrons hit metal plate, kinetic energy transferred into x-rays.

23
Q

How is an x-ray image produced?

A

X-ray image produced by detector under conveyor belt, detector collects x-rays not stopped by object.

24
Q

What are the advantages of x-rays?

A

Can image internal structure of body (non-invasive(no surgery required)).

25
Q

What are the disadvantages of x-rays?

A

Can cause cancer.
Can’t image soft tissue.
Can cause cell damage.

1st science) Physics (17 decks)

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