Q:

# How can you make a model of the solar system?

A:

To make a model of the solar system, hang circles representing the planets from a larger circle of cardboard. By varying the length of the string and hanging the cardboard planets in orbital circles, the model is even more precise.

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Only a few supplies are necessary to make a model of the solar system. Gather heavy pieces of cardboard, string or twine, a compass to make circles, scissors and crayons or markers.

Step 1: Cut circles out of the cardboard

Use a large circle from which to hang the smaller cardboard planets. A circular piece from a frozen pizza works well. Cut eight smaller circles from the cardboard to represent the planets. Cut a larger circle to represent the sun. Decorate them as desired with crayons or markers.

Step 2: Draw the orbital circles

Using the compass, draw orbital circles on the large circular piece of cardboard. There are four orbits close to the middle, where the sun hangs. Then there is a space that represents the asteroid belt, followed by the remaining four. Punch a hole in the middle, then one hole on each of the orbital circles.

Step 3: Hang the planets

Tie a knot in one end of a piece of string and thread through each hole from step two. Use a piece of tape to attach the sun (in the middle) and planets from the end of each of the strings.

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## Related Questions

• A:

There are four planets in the solar system that have rings around them, namely Jupiter, Saturn, Uranus and Neptune. These planets are classified as "jovian" planets, and they are massive balls of gas surrounded by rings and moons. The rings surrounding these gas giants consists of tiny fragments of ice and rock that orbit each planet as if they were miniature moons.

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• A:

From largest to smallest, based on total circumference, the planets that make up this solar system are Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars and Mercury. Any publication that lists Pluto as a planet is out of date. Astronomers now consider Pluto a dwarf planet.

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• A:

Mercury and Venus are the two planets in the solar system without any moons. This is likely due to the close proximity of both planets to the sun.