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Materials Required
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* A small stone
* A plastic toy of the same size
* A marked round jar
* Tank Of water
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Method
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- First fill the tank with water and note down the water level with a marker pen.
- Put the plastic toy in the water jar and observe what happens to the plastic toy. Note how much the water has risen above the marked line.
- Next put the stone in water and observe what happens to the stone and how much the water has risen.
- Analyze what happens to both of them and whether plastic or stone made the water rise more.
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What is Learnt
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Lighter object and heavier objects of the same size having density lesser than water and density more than water float and sink respectively.
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Conclusion
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The plastic toy floats while the stone sinks into the water. The stone makes the water rise higher than the plastic toy.
Plastic has a lesser density and floats, as the water is pulled towards the earth, but the stone has a higher density than water and is pulled to the ground.
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Flash Cards