The Nature of Light Flashcards
0
Q
At what speed does light travel?
A
About 300 000 000 meters per second
3.0 x 10^8 m/s
1
Q
Light travels in straight lines, true or false?
A
True
2
Q
Which travels faster, light or sound?
A
Light.
E.g. You see lightening before you hear thunder
3
Q
Light energy is a form of what?
A
Radiation
4
Q
What is radiation?
A
A method of energy transfer that does not require a medium
5
Q
What is a medium?
A
Any physical substance that acts as a carrier for the transmission
6
Q
What do electromagnetic waves include?
A
Radio waves, X-rays, microwaves and visible light
7
Q
Light is an electromagnetic wave
A
Fact
8
Q
Light has both electronic and magnetic parts, which vibrate this making waves, the waves travel at the speed of light
A
Fact
