Scale Down the Solar System
Scale down the solar system with a scale model made of peas, fruit, and nuts. You'll have a better sense of the vast size of the solar system if you try this science project for kids: the incredible universe.
![]() ©2007 Publications International, Ltd. Make your own scale model of the solar system. |
You've probably seen lots of drawings and diagrams of the solar system. But, to make the drawings fit on a piece of paper, the artists have to draw the planets closer together than they really are. In this activity, you'll make a scale model of the solar system. You'll be surprised to see how much bigger some planets are than others, and how far apart some of them are.
What You'll Need:
- Ball about 27 inches in diameter (such as a beach ball)
- 5 peas
- 1 orange
- 1 tangerine
- 2 walnuts
- Tape measure
- Large open space
Step 1: Make your model in a large open space that will represent space.
Step 2: Put the beach ball or other large ball at one end of the space. The ball is the sun.
Step 3: Place the other objects as shown in the chart below. (Remember to measure each planet from the sun.)
| Planet | Object | Distance from
the Sun |
| Mercury | Pea | 1-3/4 inches |
| Venus | Pea | 3-1/4 inches |
| Earth | Pea | 4-1/2 inches |
| Mars | Pea | 7 inches |
| Jupiter | Orange | 2 feet |
| Saturn | Tangerine | 3 feet, 7 inches |
| Uranus | Walnut | 7 feet, 3 inches |
| Neptune | Walnut | 11 feet, 4 inches |
| Pluto | Pea | 14 feet, 10 inches |
Go to the next page to find out how you can make an astrolabe and measure the position of the stars.
For more fun science projects for kids, check out:
- Science Projects for Kids: States of Matter
- Science Projects for Kids: The Moon
- Science Projects for Kids: Laws of Gravity and Motion


