Light Flashcards
What is it called when a light hits a solid object and bounces off?
Reflection
What is the ray called that comes from the light source and also causes an angle from the normal?
Incident ray
What is the angle called that is reflected off of an object between the ray and the normal
Angle of Reflection
What is is called when the light comes out of the prism and shows all the colours?
Spectrum
Why do objects appear unusual underwater?
Refraction distorts them or along those lines
What does the law of reflection state?
The angle of incident is equal to the angle of reflection
What kind of wave is light?
Transverse
What is a vacuum?
Empty space with no particles
What can travel through a vacuum
Light, electromagnetic radiation (Cosmic rays , gamma rays , U , X ,Visible light , Infra Red , Radio waves & Microwaves)
What happens when light his a rough surface?
It scatters
What colour is light?
White
What are the primary colours of light?
Red, blue, green
What are the secondary colours of light?
Yellow, Cyan, Magenta
How do we see colour? (The answer isn’t with our eyes)
The colour we see is reflected into our eyes
Which of these do not ‘emit’ light? The moon, a torch, the sun.
The moon
