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Energy and Work

# Energy and Work

Energy can be quantified as amount of work that can be done by a force. There are many forms of energy such as kinetic, potential, thermal, gravitational, sound, light, electromagnetic, chemical and nuclear energy. Energy can be changed from one form to another, but total energy in an isolated system remains constant, it can neither be created nor destroyed. Play Quiz Games : NeoK12 is iPad & Android tablet ready. Science Games, Diagrams & Activities : Identify and Label the Forms of Energy Jigsaw Puzzles Slide Puzzles Identify and Label the Types of Forces Vocabulary Games - Types of Forces Pictures & School Presentations :
 Presentations on Energy and Work : Science Videos & Lessons:  (Reviewed by K-12 teachers) Work, Force, Energy and MotionGrade: 5 - 12In this lesson learn how to calculate the force, energy, motion and work of an object. Find out how these properties compare with one other. The lesson also explains the difference between potential and kinetic energy as well as how to calculate gravitational potential energy with help of examples.8:50 Work, Energy and PowerGrade: 5 - 12Learn about the meaning of "Work" in physics, and how it relates to energy and power.9:55 Work and Energy, part 1Grade: 8 - 12Introduction to the concepts of - work and energy.9:15 Work and Energy, part 2Grade: 8 - 12Introduction to kinetic energy and potential energy.9:50 What is Work?Grade: 5 - 12The lesson demonstrates the relationship between work, force and distance. An example problem illustrates how to calculate work.8:25 Potential and Kinetic EnergyGrade: 5 - 12What is potential and kinetic energy? Find out with the help of a roller-coaster!3:05 Lesson - InertiaGrade: 5 - 12The lesson introduces the concept of inertia, the first law of physics - Things like to keep on doing what they're already doing.4:50 Lesson - MassGrade: 5 - 12Building on the idea of inertia, this lesson introduces the concept of mass, tells how it's measured, and shows how it differs from size. It explains that inertia increases with mass.4:50 Lesson - SpeedGrade: 5 - 12The lesson introduces the concept of speed to the inertia-mass relationship. It explains that force varies with mass and rate of change of speed.4:50 Lesson - Acceleration, part 1Grade: 5 - 12Learn about the concept: Force = mass x acceleration. The lesson illustrates this important rule of physics with the examples of a bicycle and a baseball player.4:50 Lesson - Acceleration, part 2Grade: 5 - 12The lesson explains how acceleration works, and how to calculate it with the help of an animated locomotive. It stresses the importance of reasonable units, and that acceleration is measured in m/s².4:50 Lesson - GravityGrade: 5 - 12The video explains the force of gravity with the help of Isaac Newton's celebrated falling apple. It also explains the unit with which the force of gravity is measured.4:50 Lesson - Weight vs. MassGrade: 5 - 12Learn about the difference between mass and weight, and understand how only mass of an object is the same on the moon and on the earth, but not its weight.4:50 Lesson - WorkGrade: 5 - 12Understand the concept that Work = Force x Distance. In the lesson, a circus troupe helps present the physics definition of work.4:55 Lesson - Kinetic EnergyGrade: 5 - 12Learn about kinetic energy - the energy of motion. Animated billiard balls help demonstrate kinetic energy.4:50 Lesson - Potential EnergyGrade: 5 - 12Learn about potential energy, which is the energy of position. A rock teetering on the edge of a cliff is demonstrated to have potential energy.4:50 Introduction to FrictionGrade: 5 - 12Lesson on force of friction. Force of friction can be classified as static or kinetic force of friction depending on whether the body is at rest or in motion. It explains that the frictional force is directly proportional to the weight of the body.7:00 Conservation of EnergyGrade: 8 - 12Using the law of conservation of energy, the lesson explains how potential energy is converted into kinetic energy.10:05 Work and Energy problem with FrictionGrade: 8 - 12A conservation of energy problem where it seems all of the energy is not conserved.10:05 Introduction to MomentumGrade: 8 - 12The lesson explains what momentum is. It illustrates a simple problem involving momentum.9:15

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