Light Rays Flashcards
What happens when the ray enters the block at 90°
Comes straight on without changing direction. Light slows down
What happens when the ray enters block at any other angle (apart from 90°)
Changes direction on entry or exit and slows down
What happens when the ray comes out of the block at 90°
Keeps straight but will speed up
What happens when ray comes out of block at any other angle (not 90°)
Bends again and will speed up
What have the ray entering the block and the ray exiting the block got in common
They are parallel
When light moves from air to glass it
Slows down
When light moves from glass to air it
Speeds up
Light (will or won’t) Bend when it enters a different material at 90°
Won’t
What happens when a laser beam hits water
Changes direction/bends
What happens to the light rays inside the ‘wire’ of glass
It bounces along it
What colours do u see when a light ray is reflected onto a 60° prism
Red, orange, yellow, green, blue and purple
Which colour refracts the most when a light ray enters a 60° prism
Blue
Which colour refracts the least when a light ray enters a 60° prism
Red
How does the prism split light
Beam of white light hits prisms surface and refracts
How can we see a rainbow?
The sun needs to be behind u and rain in front, sunlight refracts in rain drops and splits into the colours, the colours reflect of the back of the raindrop and form the circular rainbow
