light travelling Flashcards
1
Q
How does light travel?
A
As a wave and through empty space and some materials/vacuums.
2
Q
Do light waves move?
A
They move but we don’t see them.
3
Q
What are light waves also known as?
A
Electromagnetic waves.
4
Q
What is the speed of light?
A
3x10^8 m/s.
5
Q
What is a wavelength?
A
Distance from one crest/trough to another.
6
Q
What can we only see?
A
ROYGBIV.
7
Q
What is a frequency?
A
Number of crests/troughs that pass a given point in one second.
8
Q
What is the electromagnetic spectrum?
A
A diagram that shows the range/spectrum of electromagnetic waves in order of wavelength or frequency.
