Balloon Powered Car - Science Experiment for Kids

Balloon Powered Car – Science Experiment for Kids

Balloon Powered Car is a fun science experiment for kids to do at home which demonstrates the law that even governs the fastest vehicle that we knows of- Rockets.Balloon Powered Car  Kids always enjoy making their own toys and making a balloon powered car is a fun learning experience in which the kids construct their own car and learn about principles like energy conservation and laws of motion.

Safety First ! Adult Supervision Required, Don’t Eat/Drink your Experiments, wear safety goggles where ever required

Materials and tools required.

Balloon Powered Car Experiments - Material Required

In the box

  • Car Base
  • Wheel Cut-outs –4
  • Round balloon -1
  • Wooden Skewers -2
  • Straws -3
  • Colored tape
  • Scissors
  • Ruler
  • Stationary: Markers etc

Video on Youtube for the Experiment

What to Do!

  1. Get the materials ready for making the base.
  2. You can decorate the base using colored tape.
  3. Using an OHP marker, mark 2 cm on one end and 3 cm point on other end of the base.
  4. Place two straws on the marked points and tape them with the base using black tape.
  5. Design your wheel cut-outs using markers.
  6. Take two wooden skewers and mark 3 cm away from the edge on both.
    Cut 7 cm of black tape and wrap it around the mark made.
  7. Carefully insert the wheel on one side of the skewer and wrap 7 cm black tape around the skewer.
  8. Repeat the process with other axle and wheel.
  9. Carefully insert the axle with the big wheel into the straw which is 3 cm away.
  10. Insert the other wheel cutout.
  11. Again wrap 7 cm tape around the skewer.
  12. Repeat the process with other axle too.
  13. Insert one end of the straw into the round balloon’s opening and tape it with the balloon.
  14. Paste the straw to the base such that 5 cm straw lies outside the edge of the car.
  15. Your balloon car is ready. You just need to blow some air in the balloon and watch it move as you release the air when you put it on the ground..

Images for Instructions

Working Principle of Balloon Powered Car Experiment :

In this experiment, kids observe Newton’s 3rd Law of Motion which states that “Every action has an equal and opposite reaction”. This law is applied in our day to day life in many instances. For example; when we walk or get off from a boat, while swimming or even pushing a hard wall, Newton’s 3rd Law is applicable. Also, in rockets and satellites orbiting around earth, Newton’s third law can be seen in action everywhere.

Force is needed for any object to change its state of motion. All the various vehicles that we know of thrive on diesel, petrol, CNG etc. The Balloon powered car runs on air! When you blow air inside the balloon and not let the air come out, the car doesn’t move. As soon as you let the air from the balloon escape, the car moves in the opposite direction of the air flow showing a beautiful demonstration of Newton’s third law. The air rushes out in one direction – we can call this ‘force’ and the movement of the car in the opposite direction is the opposite force called ‘reaction’. This experiment also shows how the potential energy stored inside the balloon when it is inflated changes to kinetic energy when the balloon releases air and the car moves.

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