1. Energy Quiz Outline

2. What you need to know for the quiz
1. The different forms of energy from the notes.
2. Know details about the form of energy.
3. Know what is work and power.
4. Know how to calculate work and power.

3. 1. Different forms: A. Mechanical B. Thermal C. Chemical D. Nuclear
E. Electrical
F. Light
G. Sound

4. 2. Details
A. Mechanical
Mechanical energy is the most familiar form of energy.  It is the energy a substance or system has because of its motion or position (state).
Gravitational Potential Energy
Elastic Potential Energy
Kinetic Energy

5. 2. Details B. Thermal energy that comes from heat.
3 methods of transfer
a. Conduction
b. Convection
c. Radiation

6. 2. Details Chemical Energy stored in the bonds of chemical compounds
Exothermic reaction
Examples: batteries, biomass, petroleum, natural gas, coals
New substance is formed after expending all the chemical energy

7. 2. Details Nuclear energy Stored in the nucleus of atoms Two types
Fission – split of atoms (example: nuclear power plants)
Fusion – combining atoms (example: sun)

8. 2. Details Electrical Movement of electrons
Require a circuit to transport energy
AC and DC

9. 2. Details Light Electro-magnetic radiation Cannot be stored
Always in motion
Wave and particle at the same time
Energy in form of photons

10. 2. Details Sound Energy is carried in waves
Energy is from a source that causes vibrations in a medium.
Energy in motion

11. 3. Work and Power Work is the product of force and distance.
Net Force applied in the same direction of motion.
Examples: stretching a bow, raising a ram of a pile driver, push ups.
Power is the rate of work done per unit time.
Unit of work is Joules and unit of power is Watts.

12. 4. Calculating work and power
W = Fd
P = W/t or P = Fd/t