Mercury: 0.4 AUFor this model, we'll use a scale of 1 AU = 10 cm. Students need to convert the above distances to cm. (The original activity includes a nice table, with a space to put the scaled values.)
Venus: 0.7 AU
Earth: 1.0 AU
Mars: 1.5 AU
Asteroid belt: 2.8 AU
Jupiter: 5.0 AU
Saturn: 10.0 AU
Uranus: 19.0 AU
Neptune: 30.0 AU
Pluto: 39.0 AU
Now you're ready to create.
Slide the sun bead on the string and tie it in place, near one end of the string.
Now measure 4 cm (scaled distance for Mercury) and slide on the bead for Mercury. Tie the bead in place, being careful to maintain the correct distance (you may want to find a partner to help make sure everything stays in the correct place).
Continue in the same manner until all the beads have been added and secured.
You'll quickly notice that the first four planets are quite close to one another:
|Sorry to make you follow the wavy lines, but there's no way to get a picture of the whole thing spread out!|