13. Measuring and Forecasting Weather Make Your Own Wind Vane You will need: Cinema drink cup and lid Straw Small rocks Card Glue
Scissors
Push pin
Pencil
Marker with eraser
1 Make two 1 cm-long cuts into the ends of a straight straw. The cuts should be in line with each other. 2 Cut a triangle shape and a square shape from the card. 3 Place the cardboard triangle in one cut of the straw, and the cardboard square in the other cut, adding a little glue to hold them in place. It should now look like an arrow.
4 Fill your drinks container with the small rocks, and glue the lid of the container in place. 5 Turn the container upside down and stick a pared pencil (lead-side in) through its centre. Glue the pencil in place if necessary.
6 Push the pin through the straw, exactly mid-way down its length, and then into the rubber head of the pencil.
7 Use a compass to find north, south, east and west and write them onto the sides of the cup. 2