Science Project Ideas: A Demonstration of the Transfer of Energy

Science Project Ideas: A Demonstration of the Transfer of Energy
08 Mar 2019

Angles are an important concept in geometry, and are used when working with shapes like circles and triangles. Here is a fun experiment that your child can use for their science project, using marbles to demonstrate the conservation and transfer of energy.

Research Questions

• At which angle did the marble roll the fastest?
• With which sandpaper did the marble roll the fastest?
• If you used a heavier marble, would it roll faster or slower and at which angles?
• What is kinetic energy?
• What is potential energy?
• Where does the energy in the marble go?

Energy is always conserved, just changed into different forms. As a rolling marble hits small bumps on sandpaper, its energy is being transferred. But how does this affect the marble? This experiment demonstrates the effects of transferring energy.


• 2 Books
• Very Rough Sandpaper
• Rough Sandpaper
• Smooth Sandpaper
• Small marble
• Timer
• Protractor
• Volunteer
• Ruler

Experimental Procedure

1. Place one piece of sandpaper on a flat surface.
2. Take one book and place it twelve inches down the sandpaper.
3. Take the other book and slant it at a 45 degree angle using your protractor.
4. Have a volunteer ready to time how long it takes the marble to roll to the end of the twelve inches of sandpaper.
5. Roll the marble down the book and onto the sandpaper. Time and record the data.
6. Repeat steps 1-5 using different angles like 20 degrees, 60 degrees, etc.
7. Repeat steps1-6 using each of the different sandpaper types.
8. Address the research questions.

What a great science project idea!

Do you think your child can use this idea for their science project? If they can, we’d love to hear about it!

For more fun and engaging science activities, go to!

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Disclaimer and Safety Precautions provides the Science Fair Project Ideas for informational purposes only. does not make any guarantee or representation regarding the Science Fair Project Ideas and is not responsible or liable for any loss or damage, directly or indirectly, caused by your use of such information. By accessing the Science Fair Project Ideas, you waive and renounce any claims against that arise thereof. In addition, your access to’s website and Science Fair Project Ideas is covered by’s Privacy Policy and site Terms of Use, which include limitations on’s liability.

Warning is hereby given that not all Project Ideas are appropriate for all individuals or in all circumstances. Implementation of any Science Project Idea should be undertaken only in appropriate settings and with appropriate parental or other supervision. Reading and following the safety precautions of all materials used in a project is the sole responsibility of each individual. For further information, consult your state’s handbook of Science Safety.

Kinetic and Potential Energy
The Slope of and Angle


Craig Silva

Craig is a husband, a father, team leader, senior youth group coordinator, designer, brander, community builder, volunteer, blogger, and social media manager. Craig likes to go camping, travel, go on road trips, watch movies, read with his girls, build stuff, operate the grill, and play bass guitar. In June 2017, PR firm Cision identified Craig as one of Canada’s top 10 most popular male bloggers in the parents and family space. Known as Big Daddy Kreativ, his blog specializes in travel, lifestyle, food, automotive, events, parenting, movies, tech, recipes, health, pets, reviews, and giveaways.

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