Time Orders of Magnitude Questions

1. How long does it take for light to travel from the Andromeda Galaxy to the Milky Way?

 

2. Which unit of time is the same as the approximately 2.6 times the number of seconds in a month?

 

 

3. How long does it take light to travel 30 cm?

 

4. What is the briefest physically meaningful span of time?

 

5. Average human life span (2011) is 2.1 Gs. What is “Gs” an abbreviation for?

 

6. A year lasts approximately how many megaseconds?

 

7. What is approximately 143 quadrillion seconds old?

 

8. How many seconds have elapsed since all of the non-avian dinosaurs became extinct?

 

9. Approximately how many seconds are in a century?

 

 

10. How many decaseconds is one minute?