How to make a manual weather vane for primary school students

Prepare a few pieces of cardboard first, then roll it up from a corner and roll it into a paper stick.

Then stick it with double-sided tape and cut off the upper part.

Roll the second cardboard in the same way.

When finished, take the third piece of cardboard, fold it in half, draw the shape to be cut with strokes, and cut it.

Cut it and stick it on a white paper stick.

Finally, the two paper sticks are put together, so that the wind vane is completed. ?

Wind vane explanation:

A weather vane is an instrument used to measure the wind direction.

The weather vane is an asymmetric object, and its center of gravity is fixed on the vertical axis. When the wind blows, the end with great resistance to the airflow will rotate with the wind to show the wind direction.

The metal wind vane consists of six parts: wind vane, wind wheel, tail wing, movable rod, main rod and base. The main part is made of high quality stainless steel; The blades are made of high-quality engineering plastics with strong corrosion resistance; The moving rod adopts high-quality double stainless steel waterproof bearing, which has high sensitivity, low starting wind speed and durability.

Wind vane has the characteristics of simple installation and convenient transportation, and is widely used in meteorology, chemical industry, mining, agricultural production, oil field exploration, wind power generation and other industries.

Structure function:

The shape of wind vane can be divided into four parts: tail wing, counterweight, pointing rod and rotating shaft.

The weather vane is an asymmetric object, and its center of gravity is fixed on the vertical axis. When the wind blows, the end with great resistance to the airflow will rotate with the wind to show the wind direction.