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Delta Modern Language Schools
Science department
Grade 4
1st term 2024-2025

Forms of potential energy

Chemical potential Gravitational potential
energy energy

Forms of kinetic energy

Sound kinetic Electrical light kinetic Thermal kinetic
energy kinetic energy
energy energy

 Potential energy of any object depends on:

1. How heavy the object is (the mass of the object).
2. The height of the object from the earth’s surface.

In car engine:

 The chemical potential stored in gasoline changes into mechanical
kineticenergy to move the car.

 Energy cannot be created or destroyed, but it changes from one
form toanother.

 At the beginning of the skating, the skater has the least kinetic energy.
 The skater has the most kinetic energy, when starts jumping and

flipping inthe air.

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