Kinetic energy in motion in Heat – Class 10 Science Experiment

Chapter Name: Heat

Activity Name: Kinetic energy in motion in Heat

Activity Description:

This experiment aims to demonstrate the concept of kinetic energy in motion by observing the behavior of food color grains in hot and cold water. By comparing the motion of the grains in both bowls, we can understand how temperature affects the kinetic energy of water molecules and, consequently, the movement of the food color grains.

Required Items:

  1. Two bowls
  2. Hot water
  3. Cold water
  4. Food color (any color of your choice)

Step by Step Procedure:

  1. Take two bowls and fill one with hot water and the other with cold water.
  2. Gently sprinkle the food color on the surface of the water in both bowls.
  3. Observe the motion of the small grains of food color in both bowls.

Experiment Observations:

  1. Observe and note how the food color grains move in each bowl.
  2. Take note of the speed and direction of the movement.
  3. Compare the movement of food color grains in hot water to those in cold water.


  1. Handle hot water with care to avoid burns or scalds.
  2. Use food color responsibly and avoid ingestion or contact with eyes.
  3. Perform the experiment on a stable surface to prevent spills and accidents.

Lesson Learnt from Experiment:

Through this experiment, students will learn that the motion of particles in a substance is random and this random motion is a characteristic of kinetic energy.

The experiment highlights that higher temperatures result in increased kinetic energy of water molecules, leading to more rapid and energetic movement of the food color grains. This helps in understanding the concept of temperature and its relation to the kinetic energy of particles.

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