| Galaxy Number |
first measurement |
second measurement |
difference |
velocity |
|---|---|---|---|---|
1 |
||||
2 |
||||
3 |
||||
4 |
||||
5 |
||||
6 |
||||
7 |
||||
8 |
||||
9 |
||||
10 |
8. Plot the velocity versus the second measurement to get the "Hubble Law for Balloons". Label the units on your axes.
(This relates the recessional velocity relative to the distance between galaxies.)
9. Draw a 'best-fit' straight line through your points. The line should go through (0,0) on your graph. Why?
10. Find the slope (Velocity / Distance).
11. Find the age of your balloon universe from this slope (age = 1/slope)