Light Flashcards
What is light?
Light is a transfer of energy from one store of energy to another.
What form is light transmitted in?
Waves.
What are light waves called?
Electromagnetic Waves.
When does light travel to?
Until it strikes another object.
Transmitted meaning?
Light hits and passes through.
Absorbed meaning?
Light hits and stops.
Reflected/scattered meaning?
Light hits and bounces off.
Luminous objects don’t give off light. True/false?
False.
How do we see luminous objects?
When light emitted from them enters our eye.
What is the Law of Reflection?
When the angle of incidence will always be the same as the angle of reflection.
What is refraction?
The change in direction of a wave when it changes speed/when it moves from one medium to another.
What is dispersion?
The splitting of white light into a spectrum of colours.
Which coloured light has the longest and shortest wave length?
Red has the longest and violet has the shortest.
Which coloured light bends the best?
Blue light.
Magenta absorbs all except red and blue. True/False?
True.
