1. Types of Energy Foldable

2. Definition of Energy  Energy is the ability to do WORK. It is measured in the UNIT Joules (J).  BUT….what is work? o Work is when force is used to move an object a distance. SO---Energy is ability to produce a change in motion/position due to a force.

3. Law of Conservation of Energy  The Law of Conservation of Energy STATES: Energy cannot be created nor destroyed, only changed (from one form into another or transferred from one object to another).

4. Kinetic Vs. Potential Energy kinetic energy (energy of motion)—Moving energy potential energy (stored energy)—Energy is building

5. Mechanical Energy  Can be either kinetic energy (energy of motion) or potential energy (stored energy of position).  Occurs within AN OBJECT due to its motion or due to its position  When two objects push or pull each other over a distance

6. Mechanical Energy Examples Wind Water A moving car A book on a shelf

7. Chemical Energy  Potential Energy (until the chemical reaction puts the atoms/molecules in motion (kinetic).  Energy that is stored in the forces that hold, or bond, atoms together and is released when the atomic structures/bonds are changed. Each bond holds a specific amount of energy.

8. Chemical Energy Examples Food: Chemical energy is converted to thermal energy when we burn wood in a fireplace or burn gasoline in a car's engine Plants use Electromagnetic (Radiant/Solar) Energy to convert into chemical energy (photosynthesis). Herbivores eat the plants, taking some of the energy and then they are prey and the energy is transferred to the predator

9. Thermal Energy  Kinetic Energy  Known as heat  Occurs as a result of the movement and vibrations of the molecules and atoms of the substance (the faster they move, the hotter the substance). The increase/decrease of movement can cause substances to change phases; for example, heating water in order to produce steam.

10. Thermal Energy Examples Geothermal energy Volcano Boiling a pot of water Melting Ice Cream Transferred through Convection, Conduction, Radiation

11. Electrical Energy  Potential energy when a circuit is open, Kinetic energy once the switch is flipped (closed) and the charges move!  Occurs as electrical charges (electrons) are forced to be in motion. when an electrical source such as a battery or generator is connected in a complete circuit to an electrical device

12. Electrical Energy Examples Lightning The movement of electrical charges through a wire (like our circuits, electrical outlets) *Anything plugged in or a switch that closes to allow flow of electricity!

13. Electromagnetic Energy  Kinetic energy  Travels in waves that are transverse through open spaces and through a vacuum!  Can be visible or invisible

14. Electromagnetic Energy Light X-rays Gamma rays Radio waves Ultraviolet rays Infrared rays

15. Nuclear Energy  Potential Energy  Energy is stored in the nucleus of an atom, holding it together.  Energy is released when: o The nuclei are combined (fusion) i.e., when hydrogen atoms combine from the power of the sun. o The nuclei are split apart (fission) i.e., when uranium atoms are split in a nuclear power plant.

16. Nuclear Energy Examples Stars (like our sun)— – Fusion –Nuclei Combine

17. Nuclear Energy Examples Nuclear reactors—Fission-Nuclei are split- *Nuclear Power

18. The bottom line is….. That there are several types of energy and those types of energy can be converted into each other. BECAUSE: Energy cannot be created nor destroyed, only changed or converted!! This is the Law of Conservation of Energy!