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Physics > Electromagnetic Spectrum > Flashcards

Electromagnetic Spectrum Flashcards

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1
Q

What are the sources for radiowaves?

A

Radios and the sun

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2
Q

What is the effect on the body if exposed to radio waves?

A

No effect

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3
Q

How do radio waves work and a main use of radiowaves?

A

A main use could be for radios. They work by sending radio waves to and from the targets

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4
Q

What are the sources for microwaves?

A

Phones and the sun

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5
Q

What do microwaves do to the body?

A

Nothing

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6
Q

What is one main use of microwaves and how do they work?

A

A main use could be for mobile phones, to do this, the communications have to send a microwave signal to the mobile phones

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7
Q

What are the sources for infrared radiation?

A

An oven and the sun

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8
Q

What effect does infrared radiation have on the body?

A

It can cause burns

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9
Q

What is the main use for infrared radiation?

A

To use infrared cameras or to cook food

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10
Q

What are the sources for visible light?

A

The sun and metals

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11
Q

What effect can visible light have on our bodies?

A

It can cause blindness

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12
Q

What is the main use for visible light?

A

To look at things

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13
Q

What are the sources for ultraviolet?

A

Sun tan beds, UV lamps

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14
Q

What are the effects on the body when using ultraviolet?

A

It damages cells

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15
Q

What is the main use for ultraviolet?

A

For fluorescent lamps

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16
Q

What are the sources for X-rays?

A

The sun and an x ray machine

17
Q

What are the effects on the body for X-ray?

A

It causes radiation damage

18
Q

What is one use for X-rays?

A

To view the internal structure of items

19
Q

What are the sources for gamma rays?

A

Anything radioactive and the sun

20
Q

What do gamma rays do to the body?

A

They kill every cell in the human body

21
Q

What is a main use for gamma rays?

A

Sterilising food and medical equipment

22
Q

How do X-rays work?

A

When electrons hit a metal plate and their kinetic energy is transferred into x-rays

23
Q

How do x-rays produce images?

A

As an x ray can scan white parts of an image greatly and the black parts terribly, the image is able to be reflected back into an x ray machine in which the image is scanned, then produced.

24
Q

What are the advantages of x rays?

A

.You can view the internal structure of the body

.x-rays are non-invasive- you don’t need to cut up someone’s body to see what’s wrong with them

25
Q

What are the disadvantages of x-rays?

A

.They can cause cancer

.They can cause cell damage

.They cannot view soft tissue, such as the internal organs

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