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Activity 8.1
MAKE A PINWHEEL
Aim:
When you have completed this activity you will have made a pinwheel and
used it to measure wind speed.
You will need:
- Thin cardboard
- Ruler
- Pencil
- Scissors
- Pin or long needle
- Rubber
Procedure:
- Cut out a square of thin cardboard with a side of 11 cm. Colour as
in the diagram.
- Draw guidelines on the square and cut along the diagonal broken lines.
- Make five small holes where indicated, then bend the cardboard to
align the holes.
- Pass a long needle through the five holes, then push the sharp end
into a rubber.
- Hold the pinwheel near a fan. Change the speed of the fan and try
to count the number of revolutions per 10 seconds of the pinwheel, at
different fan speeds.
Available as:
 PDF
– Activity 8.1
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