Waves Flashcards

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1
Q

Uses of radio waves?

A

Radio
Television transmissions
Astronomy
Radio frequency indentification (RFID)

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2
Q

Uses and disadvantages of microwaves?

A

Satellite television
Mobile phones
Microwave ovens
Wi-Fi

DISADVANTAGE
Internal heating of body cells

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3
Q

Uses and disadvantages of infrared?

A

Electric grills
Short range communications - remote controllers for tv’s
Intruder alarms
Thermal imaging
Optical fibres

DISADVANTAGE
Skin burns

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4
Q

Uses of visible light?

A

Vision
Photography
Illumination

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5
Q

Uses and disadvantages of ultraviolet?

A

Security marking
Detecting fake bank notes
Sterilising water

Disadvantages
Damage to surface cells and eyes, leading to skin cancer and eye condition.

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6
Q

Uses and disadvantages of X-rays?

A

Medical scanning
Security scanners
Can kill cancer cells

DISADVANTAGES
Mutation and cancer
Damage body cells

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7
Q

Uses and disadvantages of gamma rays?

A

Sterilising food and medical equipment
Detection of cancer and treatment

DISADVANTAGES
Mutation and damage to body cells

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8
Q

What wave is used to communicate with satelites

A

Microwaves.
Some phones use low orbit artificial satellites
Some phones and direct broadcasting satellite televisions use geostationary satellites

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