True
False

2) How long does it take light from the nearest star (except the Sun) to reach Earth?

just over 4 days
just over 4 months
just over 4 years
just over 4 decades

3) Who first attempted to measure the speed of light?

Galileo
Michelson
Kepler

4) Who measured the speed of light using stellar aberration?

Foucault
Fizeau
Bradley
Roemer
Galileo
Michelson
Kepler

5) Which method was the most accurate measurement of the speed of light?

rotating wheel
rotating mirror
stellar aberration
Jupiter's moons

6) Pick the true statement:

Bradley used Jupiter to measure speed of light
Foucault used a rotating mirror to measure the speed of light
Froome used stellar aberration to measure the speed of light
Michelson used Jupiter to measure the speed of light

7) What is the approximate speed of light?

300 000 km/second
30 000 km/second
30 000 km/hour

8) How long does it take light from the moon to reach the earth?

0.128 seconds
1.28 seconds
20.18 seconds
2.18 minutes

9) What is a light year?

A measure of light?
A measure of time?
A measure of distance?
A measure of speed?

10) The ratio whereby light is slowed down is called the ...... index of that medium.

reflective
restrictive
refractive