Waves Flashcards
(27 cards)
What is a light source?
Anything that produces light
What is a source of light?
Anything that produces light
How fast does light travel?
300 million metres a second
What is sound measured in?
Decibels
What are the primary colours of light?
Red, Blue and Green
When do waves slow down?
Less dense materials
What type of wave is light?
A transverse wave
What is a plane mirror?
A flat mirror
When do water waves reflect?
When they hit surfaces
What type of wave is sound?
A longitudinal wave
Normal= ___ boundary
90 degrees
What is refraction?
Bent light
What can white lift create?
A spectrum
What is the angle between the normal and incoming Ray called?
Angle of incidence
Why does light refract?
Because the speed changes
When does sound travel fastest?
In solids
What is the name given to how high a wave is?
Amplitude
What can opaque objects do?
Absorb and reflect light
What is transverse?
It is perpendicular to the direction of travel
What is wave length?
From peak to peak of different waves
A phone is like what?
The ear drum
What collects sound?
Pinna
Wave speed=
Wavelength x frequency
Longitude is what?
Parallel
