The premier destination for fun science projects & experiments for kids grades K-8 since 2010!

PLANETS IN BALANCE

Demonstrate the gravitational centre of the earth and the moon’s orbits

Suitable For

Grade 6

Difficulty

2

Time Required

 <12 Hours

Supervision

Advised

What’s it about?

Space is full of ‘planets’ or other bodies orbiting one another. All nine of the planets in our galaxy orbit around the sun, and the moons orbit around the planets. Orbiting bodies such as planets and moons have a balancing point called the ‘barycentre’, which is the gravitational centre of their combined orbits. In this science experiment, you will demonstrate this by balancing two clay spheres:

Topics covered

Barycentre

What will I need?

  • MODELLING CLAY
  • PENCIL
  • STRING
  • SCISSORS
  • RULER

Procedure (Method)

Unfortunately, this section is only available in the e-book version of the project.

How does it work?

Unfortunately, this section is only available in the e-book version of the project.

In this science experiment, the point within the ‘clay earth’ where the string is tied to the pencil, represents the earth’s gravitational centre of the earth and moon’s orbits. This point lies about 4300km beneath the surface of the earth on the side that is facing the moon.

Like the sound of it?

Why not check out the full worksheet in one of our popular e-books?

This particular science project can be found in any of the following Experiland e-books:

Experiland e-books contain detailed steps, including illustrations, to complete the science projects from start to finish.

Science project ebooks for kids

Experiland's science e-books contain a diverse range of several hundred of exciting science projects, ideas and experiments.

A project introduction and background, complete listing of required materials, step-by-step instructions on how to carry out the project, why it works, learn more section, as well as a science glossary with all the relevant terms make up each of the all-inclusive science project worksheets in our e-books!

Get your e-Book!