Micro-Hydro Turbine Kinetic Generator

45 mins Ages 7-9 Indoor

An engaging, screen-free learning activity that builds real-world creativity and critical thinking for kids aged 7 to 9.

Materials Needed

  • • Plastic 2-liter drink bottle (1 unit)
  • • Wine cork or dense foam cylinder (1 unit)
  • • Plastic soup spoons (4 units)
  • • Wooden skewer (blunted) (1 unit)
  • • Sewing thread (50 cm)
  • • Small metal nut or washer weight (1 unit)

Pro Tips

  • → Snap the handles off 4 plastic spoons and insert the bowls symmetrically around the cork to form cupped water blades.
  • → Ensure the skewer rotates freely inside the bottle collar holes without friction.
  • → Adjust the faucet stream to hit the spoon cups directly at their tips to maximize rotational torque.

Safety First

Perform over a sink or outdoor basin to contain water splash.

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Step-by-Step Instructions

1

Step 1

Cut open two large opposite windows in the sides of a plastic 2-liter bottle to create a supportive turbine housing.

2

Step 2

Insert 4 snapped plastic spoon bowls symmetrically around the perimeter of a wine cork, curving in the same direction.

3

Step 3

Thread a wooden skewer through the cork center and through horizontal axle holes in the bottle frame.

4

Step 4

Tie a thread with a metal washer to the skewer axle, place under a running faucet, and watch the water wheel hoist the weight.

What they are learning

Hydraulic potential-to-kinetic energy conversion Rotary axle mechanical work Pelton water-wheel blade geometry