What is energy and what are energy resources? Do Now Please: Planner-READ/STUDY 5-1 Complete #9 due tomorrow 2. Table of Contents- #8 Notes Ch 5 #9 Forms of Energy 3. #6 Quizlet use the board to complete your vocabulary. 4. Read p.2-3 Science World What is energy and what are energy resources? Chapter Introduction

Lesson 1 Reading Guide - KC Forms of Energy What is energy? What are potential and kinetic energy? How is energy related to work? What are different forms of energy? Lesson 1 Reading Guide - KC

What is energy? What is energy? Lesson 1-1

So… Energy is the ability to cause change or do work. Energy can cause changes in the motions of objects. Lesson 1-1

Kinetic energy is energy due to motion. Kinetic Energy—Energy of Motion Kinetic energy is energy due to motion. All moving objects have kinetic energy. The faster an object moves, the more kinetic energy it has. If two objects move at the same speed, the object with more mass has more kinetic energy. Lesson 1-2

2. The kinetic energy (KE) of an object depends on its speed and its mass. The vertical bars show the kinetic energy of each vehicle. Lesson 1-2

Potential Energy—Stored Energy Potential energy is stored energy due to the interactions between objects or particles. Lesson 1-3

The gravitational potential energy stored between an object and Earth depends on the object’s weight and height. Elastic potential energy is energy stored in objects that are compressed or stretched. Chemical potential energy is energy stored in the chemical bonds between atoms.

Talk with your partner: In what way are all forms of potential energy the same? Lesson 1-3

Energy and Work Work is the transfer of energy that occurs when a force is applied over a distance. W = f x d Joules = newton x meter Whenever a force is applied to an object, causing the object to move, work is done by the force. If a force is applied but the object doesn't move, no work is done Lesson 1-4

All energy can be measured in joules (J) All energy can be measured in joules (J). After James Prescott Joule (1818-1889) a student of John Dalton. Joule worked later with Lord Kelvin. Lesson 1-5

Example: The girl does work on the box as she lifts it Example: The girl does work on the box as she lifts it. The work she does transfers energy to the box. The colored bars show the work that the girl does (W) and the box’s potential energy (PE). Lesson 1-4

Talk with your partner: How is energy related to work? Lesson 1-4

Lesson 1-5

Lesson 1-5

Which type of energy is described as the total energy of an object or group of objects due to large-scale motions and interactions? A. electric energy B. mechanical energy C. radiant energy D. thermal energy Lesson 1 – LR1

What is the transfer of energy that occurs when a force is applied over a distance? A. kinetic energy B. work C. potential energy D. electric energy Lesson 1 – LR2

Which term refers to energy due to motion? A. kinetic energy B. potential energy C. sound energy D. stored energy Lesson 1 – LR3

Energy is the ability to cause change. The gravitational potential energy between an object and Earth increases when you lift the object. You do work on an object when you apply a force to that object over a distance. Lesson 1 - VS