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CHANGING GEAR

Make some gears out of cardboard to learn how they work

Suitable For

Grade 4

Difficulty

2

Time Required

 <12 Hours

Supervision

Advised

What’s it about?

‘Gears’ are special toothed wheels of varying sizes that work together in a set. Gears can work together to make things turn or work more quickly or more slowly. When a large gear wheel turn once, it can turn other smaller gears in the set several times. The number of times the smaller wheel turns depends on the number of teeth or ‘cogs’ each gear wheel has:

Topics covered

Gear, Transmission, Torque

What will I need?

  • CORRUGATED CARDBOARD
  • LARGE STIFF CARDBOARD
  • DRAWING PINS
  • SCISSORS
  • PENCIL

Procedure (Method)

Unfortunately, this section is only available in the e-book version of the project.

How does it work?

Unfortunately, this section is only available in the e-book version of the project.

In this science experiment, one gear is used to change the speed of the other gears in the set also called a ‘transmission’. Gears are most often used in a similar configuration to provide a gear reduction in many motorized equipment. Gears can also be used to change the magnitude and direction of a power source. (View additional information in the e-book version…)

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