1. Mrs. Oulton Birt
Energy and Electrical Circuits …An Introduction

2. Electrical Potential (potential Energy)
Energy Is the Ability To Do Work
We are going to look at energy – what it is, how we control and convert it. We need to think about what energy is and what POTENTIAL it has…
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3. What Is Energy?
Energy is defined as the ability to produce change or do work, and that work can be divided into several main tasks we easily recognize:

4. Types of energy… Energy produces light. Energy produces heat.
Energy produces motion.
Energy produces sound.
Energy produces growth.
Energy powers technology.

5. Forms of Energy
There are many forms of energy, but they all fall into two categories:
Stored (potential) energy
Working (kinetic) energy

6. Potential Energy
Potential Energy is stored energy .There are several forms of potential energy, including:

7. Potential Energy…. Chemical Energy Stored Mechanical Energy
Nuclear Energy
Gravitational Energy

9. Look for signs of energy…
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10. Types of kinetic Energy:
Electrical Energy ex lightning
Radiant Energy ex light or radio waves
Thermal Energy, or heat ex geothermal
Motion Energy ex wind
Sound Energy

12. Kinetic Energy
Kinetic Energy is motion—the motion of waves, electrons, atoms, molecules, substances, and objects.

13. Now think about it…
When we turn on our flashlight, chemical energy stored in the batteries is converted into…
light energy.
When we turn on the television, electrical energy changes into…
light and sound. (and a little heat is also produced)
When we move a vehicle, the engine converts the chemical energy stored in the fuel into…
heat, sound and kinetic energy. Note that the heat and the sound that are produced are not desirable.
An electric cooker in our homes changes electrical energy into ….
heat and light.