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Physics - P1 > Topic 2 - the electromagnetic spectrum > Flashcards

Topic 2 - the electromagnetic spectrum Flashcards

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0
Q

What do waves do?

A

Waves transfer energy and information NOT matter

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1
Q

What is the amplitude?

A

Half the total hight of a wave

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2
Q

What is the wavelength of a wave?

A

The length of a full wave cycle measured in metres.

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3
Q

What is the frequency of a wave?

A

The number of waver per second, measured in hertz (Hz). 1 waver per second = 1 Hz

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4
Q

What is a transverse wave?

A

Vibration is perpendicular to the direction of travel.

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5
Q

What is a longitudinal wave?

A

Vibration is parallel to direction of travel

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6
Q

What types of wave are light?

A

Transverse

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7
Q

What type of wave is sound?

A

Longitudinal

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8
Q

What are the waves on the electromagnetic spectrum?

A 
Radio waves. Radioactive
Microwaves. Monkeys
Infrared. In
Visible light. Vietnam
Ultra violet. Use
X-ray. X-ray 
Gamma rays. Goggles
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9
Q

What happens to wave as you go down the spectrum?

A

Decreasing wavelength
Increasing frequency
Increasing danger

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10
Q

Which waves are ionising?

A

Ultra violet
X-ray
Gamma rays

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11
Q

What are the dangers and uses of radio waves?

A

No dangers.
Used for communications
Satellites
Broadcasting

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12
Q

What are the dangers and uses of microwaves

A

Dangers: heats the cells
Uses: cooking, mobile phones, satellites

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13
Q

What’s the dangers and uses of infrared

A

Dangers: skin burns
Uses: cooking, thermal imaging, remote controls, optical fibres, burglar alarms

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14
Q

What are the dangers and uses of visible light?

A

Dangers: non
Uses: vision , photography, lighting

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15
Q

What are the dangers and uses of ultraviolet?

A

Dangers: skin cancer, eye conditions
Uses: security marks, fluorescent lamps, water disinfection, forgery detection

16
Q

What are the dangers and used of X-rays?

A

Dangers: mutation of cells, leading to cancer
Uses: airport security, imaging broken bones

17
Q

What are the dangers and uses of gamma rays?

A

Dangers: mutation of cells leading to cancer
Uses: sterilising food, sterilising medical equipment, detecting cancer, treating cancer.

18
Q

What are the colours of the rainbow?

A 
Red 
Orange
Yellow
Green
Battle
Indigo
Violet
19
Q

What are the radioactive sources?

A

Alpha particles
Beta particles
Gamma rays

Physics - P1 (6 decks)

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