Product Description
Video and lesson investigations on the topic of suction power and air pressure. Key concepts include:
- Air pressure is all around objects.
- Pressing a ‘sucker’ or ‘plunger’ onto a flat surface squeezes out the air between it and the surface.
- The force of air pressure pushes onto the outside of parts of the ‘sucker’ or ‘plunger’.
- This stops the air getting back underneath it and holds it firm.
- For the suction cup to work properly, the seal between the suction cup and the surface must be very even and consistent.
- If air gets into the inside of the cup, the air pressure inside and outside will be equalised and the suction will be broken.
- Suction pads can be very useful.
- They are used in some industrial processes and machines. They hold onto flat surfaces without marking them.
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