Tuesday, February 23, 2010

How far does light travel

How far does light travel?

1. As far as it can go. x2
2. Faster than sound. X3
3. Hours x1, 24 hours x1, 9 hours x2.
4. By house to house. X3
5. A filliyen year. X1
6. As far as one room. X1

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