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🔬 Science - Class 10
Unit 9 · Measurement of temperature

Effect of Heat on Volume

ScienceSubject
8 minEstimated read
Activity 9.2

Heating and cooling an iron sphere

Method
  • Take an iron sphere having a small hook and a similar sized iron ring that fits the sphere.
  • Heat the iron sphere for some time and try to pass it through the ring.
  • Let the sphere cool down and then try to pass it through the ring once again.
  • Fill up the following table and conclude.
ObservationWhile trying to pass through the ringSpeed of the molecules in the sphereDistance between the molecules in the sphere
On heating the iron sphereincreases/decreasesincreases/decreases
On cooling the iron sphere
Discussion
  • Based on the concept of thermal energy or heat, discuss your observations.
  • Write your conclusion from the table.
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