Empowering Student Innovation for a Clean Energy Future

Division: E (3-5)
School: Sally Ride Elementary Team Size: 6

Digestive Motion

Sally Ride Elementary School

Adelina (4th grade)Manuel (4th grade)Alice (4th grade)

Kensleigh (3rd grade)Sasha (5th grade)Knox (1st grade)

Please watch the video until the end. It is only 5 minutes. Enjoy it!

Energy Transfer Machine’s Explanation


his project shows different energy transformations:

Chemical energy from batteries into electricity

– Electricity into mechanical energy of the fun

– Mechanical energy of the dominos push the ball down to the bucket thanks to the gravitational energy

– it transforms into chemical energy when vinegar and baking soda react together

– Chemical energy is transformed into mechanical

– with gravity’s help the ball rolls down in zigzag to the second bucket

– mechanical energy knocks down the cup with water to flush the toilet.


his project represents the Digestive System in humans.

It starts in the mouth where food or chemical energy enters the body. It goes down the esophagus until the stomach. The stomach breaks down the food into nutrients through a chemical reaction. The mixture goes to the Small intestine and nutrients are absorbed.

Next destination, the large intestine that absorbs the water and the rest of the nutrients from the food. Finally, the waist leaves the body when we go putty.


his project includes different types of simple machines.

  • Wheel and Axle in the fan
  • Lever when the balloon inflates and pushes one side of the lever
  • Inclined plane is the most used in this project
  • Pulley used twice to change the direction of motion of cups and the other extreme of the string.


AA batteries (2)

AA battery holder (1)

Fan (1)

Wires and connectors

Cups (4)

Color paper

Copy paper

Index cards

Clear tape

White tape

Water bottle (1)

Balloon (1)

Vinegar (30ml)

Baking Soda (2 Spoons)

Dominoes (4 pieces)

Marble (2)

Thumbtacks (4)



5 thoughts on “Digestive Motion

  • February 16, 2022 at 10:43 am

    Very clever use of chemical energy to inflate the balloon. Very creative theme.

  • February 16, 2022 at 7:38 am

    I was amazed by how informative and organized your project was done.

    The creativity was also off the charts, congrats everyone on an exceptional job!

  • February 15, 2022 at 12:00 pm

    Great explanations, the students looked like they learned a lot and had loads of fun! Nice use of the website to show off the photos of your project.

  • February 14, 2022 at 3:27 pm

    Nice project! Wish you luck!👏

  • February 14, 2022 at 9:26 am

    Very well done chiquitines!!!! It is fun and we can learn a lot from your project!!! Good luck!!!


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