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Physics waves and radiation > Waves > Flashcards

Flashcards in Waves Deck (21)
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1
Q

State the electromagnetic spectrum in order

A

TV/radio,microwave,infrared,visible,ultraviolet,X-ray,gamma

2
Q

Is gamma high or low frequency

A

High

3
Q

Is TV/radio high or low wavelength

A

High

4
Q

Is TV/radio high or low frequency

A

Low

5
Q

Is gamma high or low wavelength

A

Low

6
Q

What is the speed of light in air

A

3x10*8

7
Q

What is the speed of light in glass

A

2x10*8

8
Q

What do all the radiations travel at the speed of

A

Light = 3x10*8

9
Q

What are the uses and detectors of gamma rays

A

Uses- Medical tracers,killing cancerous cells,sterilisation

Detectors- film,Geiger-Miller tube

10
Q

What are the uses and detectors of x-Rays

A

Uses- view bones,find damage,treat cancer cells,airport security,industry to inspect welds

11
Q

Uses and detectors of ultraviolet

A

Uses- sun lamp,making ions,making vitamin D,treat skin cancer,sterilise medical equipment,detecting forgery
Detectors- film

12
Q

Uses and detectors of visible

A

Uses- seeing photography

Detectors - eye,film,electronics(ldr)

13
Q

Uses and detectors of infrared

A

Uses - treat injured muscle and tissue,detect tumours,people trapped,remote,lighting
Detectors- electronic devices,special film,blackened thermometer

14
Q

Uses and detectors of microwave

A

Uses - communication,heating water and food

Detectors - Ariel and electronic circuit

15
Q

Uses and detectors of radio / TV

A

Uses - communications,TV,radio

Detectors - Aerial and electronic circuits

16
Q

What are the two main types of waves

A

Transverse and longitudinal

17
Q

What is longitudinal

A

A wave where the particles travel in the same direction as energy

18
Q

What is transverse

A

A wave where the particles travel at right angles of the direction of energy

19
Q

What is an amplitude

A

Measure of energy carried by a wave > amplitude = > energy measured in m , higher the louder

20
Q

What is a wavelength and what is is measured in

A

The length of one completed wave measured in metres

21
Q

What is frequency and what is it measured in

A

The number of waves in one second meanders in Hertz