Unit 5 Lesson 1 What Is Energy? Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 5 Lesson 1 What Is Energy? Florida Benchmarks SC.5.P.10.1 Investigate and describe some basic forms of energy, including light, heat, sound, electrical, chemical, and mechanical. SC.5.P.10.2 Investigate and explain that energy has the ability to cause motion or create change. Copyright © Houghton Mifflin Harcourt Publishing Company
Energy All Around Energy is the ability to cause changes in matter. Unit 5 Lesson 1 What Is Energy? Energy All Around Energy is the ability to cause changes in matter. Energy can transform, or change, from one form into another. Energy is never used up. It just changes form. Copyright © Houghton Mifflin Harcourt Publishing Company
The Ups and Downs of Energy Unit 5 Lesson 1 What Is Energy? The Ups and Downs of Energy Potential energy (PE) is the energy an object has because of its position or condition. Kinetic energy (KE) is the energy an object has because of its motion. PE is stored energy. KE is energy of motion. Copyright © Houghton Mifflin Harcourt Publishing Company
The Ups and Downs of Energy Unit 5 Lesson 1 What Is Energy? The Ups and Downs of Energy Energy can be stored as chemical energy. Potential energy can be changed to kinetic energy. Kinetic energy can be changed to potential energy. Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 5 Lesson 1 What Is Energy? Loud, Soft, Hot, Cold Sound energy is a form of energy that is carried as waves in vibrating matter. Sound energy is a type of kinetic energy, because particles of matter are moving. Sound energy is the cause of all the sounds you hear. Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 5 Lesson 1 What Is Energy? Loud, Soft, Hot, Cold Thermal energy is the total kinetic energy of the particles that make up a substance. You can sense thermal energy as temperature. The more thermal energy an object has, the greater its temperature. Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 5 Lesson 1 What Is Energy? See a Sea of Energy Light energy is a form of energy that can travel through space. Light energy travels as waves. Some objects give off light. Other objects reflect light. Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 5 Lesson 1 What Is Energy? See a Sea of Energy Electrical energy is energy caused by the movement of electric charges. Electrical energy can change to other types of energy you can use. Copyright © Houghton Mifflin Harcourt Publishing Company
Energy in Machines and Food Unit 5 Lesson 1 What Is Energy? Energy in Machines and Food Mechanical energy is the total energy of motion and position of an object. Mechanical energy = KE + PE Machines use mechanical energy to do work. Copyright © Houghton Mifflin Harcourt Publishing Company
Energy in Machines and Food Unit 5 Lesson 1 What Is Energy? Energy in Machines and Food Food contains energy. Chemical energy is energy that is stored in matter and that can be released by a chemical reaction. When your body breaks down food, potential chemical energy is released, producing heat. Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 5 Lesson 1 What Is Energy? Spotlight on Energy Musicians and performers rely on different forms of energy to complete their shows. Potential, kinetic, chemical, light, heat, mechanical, and sound energies are used. Copyright © Houghton Mifflin Harcourt Publishing Company