Photo from science at home
Photo from
At Fun Science we love doing science at home! Make your very own gravity track, using every day items. This is great fun for a rainy day and can be redesigned countless times! Explore gravity and do a bit of problem solving at the same time!  

You will need:

  • Toilet and kitchen roll tubes
  • Sellotape
  • Scissors
  • A marble (or similar)


  • Cut small openings at the end of the tubes so the ball can fit through when it drops.
  • Stick the tubes to the wall with the sellotape so that it makes a path for the ball to follow.
  • Test your track with the marble, does it work or does it need adjusting?

Now try:

  • Can you make your track last for 10 seconds?
  • Try it with different sized/weight balls, what happens?

The science bit:

The ball is carried down the track because of gravity. Gravity is an invisible force that pulls towards the centre of the earth – it’s why we stay on the ground and don’t float away! Gravity is pulling the ball downwards so it travels down the track. Thanks to Sylvan Learning for this fun activity!        

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