Draw a sketch of the windmill, with accurate measurements of different parts. You can paste a photograph of the toy in the space given below.
A labelled diagram of the windmill showing: the cardboard box structure, the straw axle passing through the centre, the circular cardboard pieces attached to the straw, the chart paper cylinder, and the fan blades made from chart paper. Measurements should include the dimensions of the cardboard box, the length of the straw, the diameter of circular pieces, and the size of fan blades.
Explanation
Activity 5 explains that a windmill is made using a combination of simple machines - propeller and wheel and axle. The chapter provides step-by-step instructions for creating a working model using cardboard, chart paper, straws, and glue. The windmill converts wind energy into rotational motion.