Anemometer In Stock Now

Measures wind speed and can measure air velocities of 5-20 mph accurately. 

This anemometer is called the Robinson Cup type and is based on the fact that the moving air exerts more force on the open end of a hemisphere than upon the closed end. It consists of 4 lightweight cups (3 black, 1 red) at the end of spokes which are at right angles to one another. Each open end faces the closed end of the following cup. The difference in air force between open and closed ends is enough to cause the anemometer to spin at a speed approximately y ⅙ that of wind velocity. 

Concepts taught: wind; wind speed determination; weather; motion; wind as a source of energy

Curriculum Fit: earth science grades 6-8, physics motion and force grades 6-8, chemistry grades 6-8