The six major forms of energy are: 1. Mechanical 2. Thermal 3. Chemical 4. Electrical 5. Electromagnetic 6. Nuclear
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2 The six major forms of energy are: 1. Mechanical 2. Thermal 3. Chemical 4. Electrical 5. Electromagnetic 6. Nuclear
3 Mechanical Energy Energy associated with the motion and position of everyday objects. Examples 1. Speeding Train 2. Bouncing balls 3. Sprinting Athletes
4 Thermal Energy Total potential and kinetic energy all the microscopic particles in an object Examples 1. Friction 2. Boiling Water 3. Heating Pad
5 Chemical Energy Energy stored in the chemical bonds in compounds. When these bonds are broken, the released energy can do work. Examples 1. Fireworks 2. Burning Wood 3. Gasoline
6 Electrical Energy Energy associated with electrical charges. Examples 1. Lightning Bolts 2. Television 3. Toaster
7 Electromagnetic Energy Energy that travels through space in the form of waves. Examples 1. Visible Light 2. X-Rays 3. Tanning Beds (UV Light)
8 Nuclear Energy Energy stored in atomic nuclei Examples 1. Nuclear Power Plant (Reactor) 2. Sun 3. Nuclear Weapons
9 Two Laws of Energy 1. Energy Conversion 2. Law of Conservation
10 1. Energy Conversion Energy can be converted from one form to another
11 Elastic Potential Energy is in the compressed spring. When the spindle unwinds, elastic potential energy is converted to kinetic energy of the toys moving parts.
12 2. Law of Conservation Energy can not be created or destroyed, it can only change form.
13 Where does the kinetic energy of a bike go when you stop the bike? The bike slowed down and stopped because of friction. Friction changes the kinetic energy into thermal energy.
14 Energy Conversion / Energy Conservation
15 Draw a pendulum and show where potential energy is the highest, and kinetic energy is the highest
16 Draw a pendulum and show where potential energy is the highest, and kinetic energy is the highest
17 Where is the greatest PE and KE points on the following pendulum?
18 Quiz Time!! #1) What type of energy cooks food in a microwave oven? Electromagnetic Energy #2) What type of energy is the spinning plate inside of a microwave oven? Mechanical Energy
19 #3) Electrical energy is transported to your house through power lines. When you plug an electric fan to a power outlet, electrical energy is transform into what type of energy? Mechanical Energy
20 #4) What energy transformation occurs when an electric lamp is turned on? ELECTRICAL ENERGY ELECTROMAGNETIC ENERGY
21 #5) What 2 types of energy is shown below? (Sort of a trick question Think!!!) Mechanical Thermal Energy (Don t forget friction)
22 #6) What 4 types of energy is shown below? Electrical (power to TV) Mechanical (Push the button on the remote) Electromagnetic Energy (Infrared rays to TV from remote and the light rays from the TV) Chemical (Batteries to the remote)
23 #7) What type of energy is shown below? Thermal Energy
24 Question #1 Which of the following phrases describes a situation in which potential energy is not changed into kinetic energy? a. An apple falling from a tree b. A dart being shot from a spring-loaded gun c. The string of a bow being pulled back d. A waterfall flowing over a cliff
25 A car s engines gears Power Lines Friction in the engine creating heat Heating Soup Moving Automobile Nuclear Fusion (sun and stars) Gasoline Foods people eat Mechanical Electrical Thermal Thermal Mechanical Nuclear Chemical Chemical
26 Nuclear Fission (Inside the earth s core) Lightning Radio Waves Melting Ice Cream Leaping Frog The car battery Visible Light Nuclear Electrical Electromagnetic Thermal Mechanical Chemical Electromagnetic
27 As a group, find the five steps (four types of energy) that a match uses to convert energy. Use a flow chart to describe
28 1. You use chemical energy in your muscles to move your hand (mechanical) and strike the match 2. Friction between the match and matchbox converts mechanical energy into thermal energy 3. Thermal energy triggers a reaction in the match tip releases stored chemical energy and lights the match 4. The stored chemical energy is converted into thermal energy 5. Thermal Energy to electromagnetic energy (flame waves)
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