Ss Chapter 7
- 1. Chapter 7 Energy, Work, and Momentum GEE Science Summer Remediation Mr. Nash Donnie Bickham Middle School Room 204
- 2. Overview Energy is the ability to do work. Work is the process of moving matter. Two Categories of Energy: Potential Energy Kinetic Energy Pg. 139
- 3. Potential Energy Stored energy due to an object’s position or state. Examples: Water behind a dam Chemical energy stored in a match or lump of coal Electrical energy of a battery Pg. 139
- 4. Kinetic Energy Energy of motion as an object moves from one position to another. Examples: Moving car Water going over a waterfall Rock rolling down a hill Electrons moving in a circuit Pg. 139
- 5. Energy can have many forms: Type of Energy Heat Sound Electromagnetic Chemical Electrical Mechanical Nuclear Examples Fire, friction Thunder, doorbell Sunlight, microwave Battery, wood, match Lightning, generator Gasoline motor, windmill Radioactive elements Pg. 139
- 6. Law of Conservation of Energy Energy is never destroyed, but it can be transferred from one form into another. Example: A match has stored, potential, chemical energy. When struck it is transferred into light and heat energy. Pg. 139
- 7. Practice 1: Types of Energy Complete Section B (1-5) in your notebook. Complete one question from Section C. Remember your 5 sentence paragraph structure. Pg. 140
- 8. Work, Efficiency, and Power Work occurs when the force applied to an object moves the object a certain distance. Work is calculated by: W = F x d Force is measured in Newtons (N) and distance is measured in meters (m). One Joule (J) equals one Newton Meter. Work is measured in Joules (J). Pg. 141
- 9. Activity 1: Work Complete Activity 1: Work in your notebook. (1-7). Pg. 141
- 10. Activity 1: Work 15 J 450 J 300 J 32 J 990 J 90 J 14.4 J Pg. 141