Light waves Flashcards
1
Q
what is light produced by?
And what are they?
A
Luminous objects like sun, candles, light bulbs, flames and glow worms
Transverse waves
2
Q
What direction do light waves travel?
A
A straight line
3
Q
How can light waves be reflected?
A
by mirrors
4
Q
What slows down light waves?
A
By particles
5
Q
What is the speed of light in a vacuum?
A
3 x 10⁸ m/s
6
Q
How can light travel the fastest?
A
through a vacuum
- no air, no particles, nothing at all
7
Q
How long does the light from the sun get to the earth?
A
8.3 minutes
8
Q
How far away is the sun from the earth?
A
150,000,000 Km
