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- 1. Multiple Choice
How fast does light travel
300 000 000 m/s
3x108 m/s
3 m/s
300 000 000 km/s
- 2. Multiple Choice
True/False: Nothing can go faster than the speed of light
True
False
- 3. Multiple Choice
A light year is
A unit of time
A unit of length
A unit of speed
A unit of intensity
- 4. Multiple Choice
True or false: The light that is emitted by the Sun reaches earth instantly
False
True
- 5. Multiple Choice
If a person runs towards a light ray, they will measure the speed of the light ray as going at
Exactly the speed of light
slightly faster than the speed of light
slightly slower than the speed of light
- 6. Multiple Choice
If a person is in a rocket traveling at 50% the speed of light towards a light ray, they will measure the speed of the light ray as going at
Exactly the speed of light
faster than the speed of light
slower than the speed of light
- 7. Multiple Choice
If a person is in a rocket traveling at 50% the speed of light away from a light ray, they will measure the speed of the light ray as going at
Exactly the speed of light
faster than the speed of light
slower than the speed of light
- 8. Multiple Choice
When I travel in a rocket close to the speed of light, how will I age compared to someone left on earth
Rocket person will age at a slower rate
Earth person will age at a slower rate
time is time! Both people will age at the same rate !
- 9. Multiple Choice
What changes as an object approaches the speed of light
time
mass
length
temperature
- 10. Multiple Choice
A rocket takes off from earth. It then speeds up to 0.99c. How will it appear (to an earth based observer) at 0.99c compared to when it was at rest
contracted in length in one direction
expanded in length
the same lenth
contracted in length in all directions
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