Safety rules:
Parent supervision
Take care with sharp compass
Materials you need are:
a sheet of cardboard
a ruler
a mathematical compass
a pencil
Relative Planet Diameters - On one side of the cardboard and using the table below, the compass and the ruler, draw the relative planet diameters to scale.
| PLANET | DIAMETER (mm) |
| Mercury | 3.8 |
| Venus | 9.5 |
| Earth | 10 |
| Mars | 5.3 |
| Jupiter | 112 |
| Saturn | 94.1 |
| Uranus | 39.8 |
| Neptune | 38.1 |
| Pluto | 2.4 |
Relative Planet Distances - On the other side of the cardboard and using the table below, the ruler and the pencil, draw the relative distances of the planets from the sun.
| PLANET | DISTANCE (cm) |
| Mercury | 0.4 |
| Venus | 0.7 |
| Earth | 1 |
| Mars | 1.5 |
| Jupiter | 5.2 |
| Saturn | 9.4 |
| Uranus | 19.1 |
| Neptune | 29.9 |
| Pluto | 39.3 |