You will need:
- Glue stick
- Thin cardboard
- Short pencil with rubber
- Drinking straw
- Small plastic pot, e.g. from yoghurt
- Pin or needle
- Blue tag or modelling clay
- Compass, you can just use a Compass App on your mobile phone
What to do:
- Make a hole in the middle of the bottom of the plastic pot using the pencil. Then push the pointy end of the pencil through the hole.
- Carefully cut four small triangles from the cardboard using the scissors.
- Glue each of the 4 small triangles to the yogurt pot. Look at the image to see where they should go. These will show the direction of the wind.
- Cut two larger triangles from the cardboard using the scissors.
- Cut a short slit at either end of the straw. Insert the two large triangles into the slits to make and arrow-shaped pointer. This is called a “vane”.
- Carefully push the pin or needle through the middle of the drinking straw. Then push it into the rubber on the pencil end.
- Make a ring from blue tag or modelling clay and push the pot firmly into it, so it cannot blow away. Your wind vane is ready to use.
- Place your wind vane outside. Position it so that the small triangles point North, East, West and South. Use a compass to help you. The vane swings around in the direction of the wind.
You can watch this experiment as a video here: