Product Description
Video and lesson investigations on the topic of . Key concepts include:
- Air passing over the top side of a flexible flat surface appears to make the surface ‘lift’.
- Air passing over a flat flexible surface lowers the pressure of air above the surface.
- The still air on the underside of the surface remains at normal air pressure. ‘Lift’ occurs because the force of air pressure is weaker above the surface.
- The forces are no longer balanced and opposing each other, therefore movement occurs.
- The faster the air moves across the surface, the less pressure it exerts on the surface.
- The phenomenon, called Bernoulli’s Principle, is what gives aeroplanes their ‘lift’.
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