Revision Crossword Puzzle: Light and Shadows

Our main, most important light source.
Mirrors reflect light well because of their smooth, shiny, _____ surfaces.
This has to be transparent so light can enter the room.
The shadow of an object on a screen.
We can show or _____ how light reflects off a mirror in a diagram.
Submarines use this to see what is on the surface of the water. They reflect light between two mirrors to help us see.
A line that light travels in.
Light _____ off objects and into our eyes. This is how we see.
_____ (two words) were used to tell stories in Ancient CHina and Indonesia. They can be made using black paper or your hands.
A material that does not allow any light through is called _____.
Light travels in _____ lines.
Light reflects off a mirror at the same _____ as it arrives.
Translucent objects let _____ light through.
_____ are formed when an object blocks the light.