Energy Transfer Flashcards
How does light travel?
In straight lines
Can light pass through a vacuum?
Yes
What does a mirror do to light?
It reflects it
Why are shadows formed?
Because light cannot travel around solid opaque objects.
Sources of light
Sun.
What is laterally inverted?
When you see yourself in the mirror and your left side turns to your right side.
What is a concave mirror?
A mirror curving outwards.Image changes as you approach.
What is a convex mirror?
A mirror curving inwards. Always smaller, always the right way up.
How does a periscope work?
The two 45° mirrors means that the light can get around corners.
The image you see inside of the plane mirror is called?
Virtual image
What is total internal reflection?
When the angle of incidence is greater than the critical angle, the light reflects on the same side as it began on
What colours from white light is refracted most and least?
Most is violet least is red.
What are the primary colours of light?
Green, red and blue
What are the secondary colours of light?
Cyan, Magenta and Yellow.
Why does colour appear as it does?
Because the object absorbs all of the colours excepting the one you can see.
