Astronomy 102:
Solar System Astronomy

Fall Semester 2009

Scale of the Universe Part 3 Worksheet

Rounding Note: Your answer is assumed to be reduced to the highest power possible and rounded to 2 decimal places.
For Example: 234.5678 = 2.34 x 10^2 or 0.234 = 2.34 x 10^-1 or 2.34 = 2.34 x 10^0

Data Entry Note: Because Moodle doesn't understand English, you will need to enter the scientific numbers into
Moodle using computer shorthand where "e" means "x 10 to the power of whatever follows". We will use that
format here to give you practice before doing your post-lab.
For Example: 234567 = 2.34 x 10^5 should be entered "2.34e5" and 0.23456 = 2.34 x 10^-1 should be entered "2.34e-1".

Planet
Average distance from the Sun (km)
This distance on this scale (in m)
Mercury
5.79×107
Venus
1.08×108
Earth
1.50×108
Mars
2.28×108
Jupiter
7.78×108
Saturn
1.43×109
Uranus
2.87×109
Neptune
4.50×109