Waves Flashcards
State the electromagnetic spectrum in order
TV/radio,microwave,infrared,visible,ultraviolet,X-ray,gamma
Is gamma high or low frequency
High
Is TV/radio high or low wavelength
High
Is TV/radio high or low frequency
Low
Is gamma high or low wavelength
Low
What is the speed of light in air
3x10*8
What is the speed of light in glass
2x10*8
What do all the radiations travel at the speed of
Light = 3x10*8
What are the uses and detectors of gamma rays
Uses- Medical tracers,killing cancerous cells,sterilisation
Detectors- film,Geiger-Miller tube
What are the uses and detectors of x-Rays
Uses- view bones,find damage,treat cancer cells,airport security,industry to inspect welds
Uses and detectors of ultraviolet
Uses- sun lamp,making ions,making vitamin D,treat skin cancer,sterilise medical equipment,detecting forgery
Detectors- film
Uses and detectors of visible
Uses- seeing photography
Detectors - eye,film,electronics(ldr)
Uses and detectors of infrared
Uses - treat injured muscle and tissue,detect tumours,people trapped,remote,lighting
Detectors- electronic devices,special film,blackened thermometer
Uses and detectors of microwave
Uses - communication,heating water and food
Detectors - Ariel and electronic circuit
Uses and detectors of radio / TV
Uses - communications,TV,radio
Detectors - Aerial and electronic circuits
What are the two main types of waves
Transverse and longitudinal
What is longitudinal
A wave where the particles travel in the same direction as energy
What is transverse
A wave where the particles travel at right angles of the direction of energy
What is an amplitude
Measure of energy carried by a wave > amplitude = > energy measured in m , higher the louder
What is a wavelength and what is is measured in
The length of one completed wave measured in metres
What is frequency and what is it measured in
The number of waves in one second meanders in Hertz
