2.  Differentiate between potential and kinetic energy  PA Anchor: S8.C.2.1

3.  What does it mean when you say “I have no energy?”

4.  The ability to do work or cause change  What kinds of things can do work?  Units: Joule (J)

5. (1) Kinetic Energy  Energy an object has while it’s moving  From Greek: “kinetos” = “moving” (2)Potential Energy  Energy an object has while it’s not moving Elastic Gravitational

6.  Depends on:  Mass  Velocity / Speed

8.  Depends on:  Mass  Gravity = 10 m/s 2  Height PE = mgh

10.  Identify different forms of energy  PA Anchor: S8.C.2.1

11.  Mechanical  Thermal  Chemical  Electrical  Electromagnetic  Nuclear

12.  Analyze how energy can be converted from one form to another  PA Anchor: S8.C.2.1

13.  Most forms of energy can be converted  Toaster Electrical  thermal + mechanical  Body Chemical  mechanical  Car engine Electrical  thermal  chemical

14.  Apply the Law of Conservation of Energy  PA Anchor: S8.C.2.1

15.  The law of conservation of energy states:  Energy cannot be created or destroyed, it can only change forms

16.  Identify examples of heat transfer as radiation, convection, and conduction  Differentiate between radiation, convection, and conduction  PA Anchor: S8.C.2.1

17.  Conduction  Convection  Radiation

18.  Heat is transferred without the movement of matter  Ex: You touch a hot pot with your hand

19.  Transfer of heat within a substance  Ex: Boiling water

20.  Transfer of energy by Electromagnetic (EM) waves  Ex: Bonfire

22.  Identify conductors and insulators  PA Anchor: S8.C.2.1

23.  Conductors  Transmit energy well  Examples: Metal Tile Floor Water  Insulators  Don’t transmit energy well  Examples: Wood Paper Air

24.  Discuss energy conservation techniques  PA Anchor: S8.C.2.1

25.  Insulation  Made of fiberglass  Seal around windows and doors  Prevent air flow  convection currents

26.  Differentiate between renewable and nonrenewable resources  PA Anchor: S8.C.2.1

27.  Renewable  A resource that can be replaced in nature at a rate close to the rate at which it is being used  Ex: Wind, tidal, geothermal  Nonrenewable  A resource that exists in a fixed amount  Ex: Coal, oil, natural gas

28.  Discuss advantages to using alternative sources of energy  Describe the impact of using nonrenewable resources on the environment  PA Anchor: S8.C.2.1

29.  Advantages:  Won’t run out if used correctly  Less environmental impact  Disadvantages:  May be available only in limited locations  May be more expensive to use

30.  Advantages:  “Ample” supply  More cost efficient than alternative sources  Disadvantages:  Huge environmental impact (mining)  Huge environmental impact (pollution)  Will eventually run out

31.  Explain the sun’s impact as a source of energy  PA Anchor: S8.C.2.1

32.  All energy can be traced back to the sun…  One example: Coal / Fossil Fuels These are made by the remains of dead plants / animals. Plants get their energy from the sun (photosynthesis) Animals get their energy from plants which get their energy from the sun