Light Revision Flashcards
1
Q
What speed does light travel at?
A
300,000,000m/s
2
Q
What is a luminous object?
A
This is an object that create light. e.g sun
3
Q
What is a non-luminous object?
A
This is an object that does not create light. e.g moon
4
Q
Why does the ray of light refract when it enters the glass prism
A
The ray of light refracts because it enters a different medium.
5
Q
The splitting of colour into a spectrum is called_______________.
A
Dispersion
6
Q
What are the secondary colours?
A
Yellow, magenta, cyan
7
Q
How is a rainbow produced?
A
When the water droplets in the air disperse sunlight
8
Q
What sends electrical signals to the brain, from the eye?
A
Optic nerve
9
Q
True or false
Light cannot travel through stone
A
True
