
Activity.... Do – Think - Learn
Aerated water shows the effect of aerating the water in the tubes. Press one of the buttons and adjust the air flow.
What happens to the object in the tube?
The Science Bit
The objects sink when the water is aerated because when the air is added to the water and the density of the mixture is reduced. Objects float on liquids when the force of the liquid pushing an object (upthurst) is greater than the force of gravity pulling it down.
Curriculum Links
Forces in Action
- That when an object is submerged in water, the water provides an upward force on it
- That several forces may act on one object