1. Types of Energy & Energy Conversions
Mechanical Energy
Chemical Energy
Types of Energy &
Energy Conversions
Batteries
Wire
Bulb

2. Potential Energy is energy that has been stored in objects.
Potential energy is waiting to be used. It has the potential to cause change.

3. Kinetic Energy Kinetic energy is the energy of motion.
When things are moving, they have kinetic energy.

4. It describes the combination of the two energies.
Types of Energy
Mechanical Energy is the sum of an object’s kinetic and potential energies.
It describes the combination of the two energies.

5. This is mechanical energy!
Types of Energy
As this car starts moving itself up the hill, energy is converted into kinetic and potential energy.
This is mechanical energy!

6. So when you see something moving, it has mechanical energy.
Types of Energy
For our purposes, we will relate mechanical energy to its kinetic energy component.
So when you see something moving, it has mechanical energy.

7. The higher an object is lifted, the more potential energy it gains!
Types of Energy
Gravitational Potential Energy is the energy stored in objects that have been lifted above the ground.
The higher an object is lifted, the more potential energy it gains!

8. Springs and rubber bands store elastic energy!
Types of Energy
Elastic Potential Energy is the energy stored in objects that have been stretched or compressed.
Stretched Rubber Band
Compressed Spring
Springs and rubber bands store elastic energy!

9. Chemical Energy is the energy store inside of molecules.
Types of Energy
Chemical Energy is the energy store inside of molecules.
Food
Fuel
Batteries
Food, fuel and batteries all store energy in the form of chemical energy!

10. Types of Energy Thermal Energy is more commonly called heat.
Thermos, thermometer, and thermostat are all words that are related to heat. Therm- means heat!
What words can you think of that start with “therm-”?

11. Types of Energy
Electrical Energy is the energy that travels through the wires of a circuit.
Electrical Outlet
Batteries do NOT contain electrical energy! Be sure your students understand that. Electrical energy goes through the wires. It is then converted into other forms that can be seen!
Wire

12. Types of Energy
Sound Energy is a type of energy that travels in waves and is easy to recognize.

13. Types of Energy
Light Energy is also a type of energy that travels in electromagnetic waves.
Solar Energy
Light energy from the sun is so important that it has its own name: Solar Energy!

14. Energy Conversions
There are many forms of energy, and energy is always being transferred and transformed from one type to another.
Batteries
Wire
Bulb

15. chemical energy  electrical energy  light energy
Energy Conversions
The chemical energy stored in the batteries is being converted into the electrical energy going through the wires. Then, that electrical energy is being converted into light energy.
Bulb
Wire
Batteries
chemical energy  electrical energy  light energy

16. chemical energy  mechanical energy
Energy Conversions
The chemical energy in the gasoline is being converted into mechanical energy.
chemical energy  mechanical energy

17. electrical energy  thermal energy
Energy Conversions
When energy changes forms, it is called an energy conversion or an energy transformation.
electrical energy  thermal energy