1. Energy and Electronics
2nd Half, 1st Semester Lessons

2. FORMS OF ENERGY
Lesson 1

3. What is ENERGY? Energy is the ability to do work.
The unit of energy is joule (J).

4. KINETIC ENERGY
Kinetic energy is the energy of an object due to its motion.
All moving objects possess kinetic energy.
The greater the mass and the speed of a moving object, the greater kinetic energy is.

5. POTENTIAL ENERGY
Potential energy is the energy stored by objects due to its position or its condition.
Gravitational Potential Energy
Elastic Potential Energy

6. CHEMICAL ENERGY
Chemical energy is the energy stored in substances such as food and fuels.
It is released and converted into other forms of energy when the substances undergo chemical reactions.

7. SOUND ENERGY Sound energy is produced by vibrating objects.
It can be transferred from one place to another in the form of waves through a medium such as gas, liquid, or solid.

8. HEAT ENERGY Energy usually found in hot objects.
The hotter the object, the more energy it can give out.

9. LIGHT ENERGY
Light energy is the energy radiated by luminous objects.

10. ELECTRICAL ENERGY
Electrical energy consists of electric charges, which travel through electrical conductors.
It is supplied in the form of electrical power by generators, batteries, dry cells, and solar cells.

11. NUCLEAR ENERGY
Nuclear energy is the energy stored in the nucleus of an atom.

12. TEST YOURSELF

13. Answers Q1. Energy is the ability to do work. Q2. Kinetic energy
Potential energy
Heat energy
Sound energy
Electrical energy
Nuclear energy
Chemical energy
Light energy