# The Nature of Energy - PowerPoint PPT Presentation

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The Nature of Energy. Motion, Force & Energy Chapter 5.1 Pages 140-145. What is Energy?. Energy is the ability to do Work or cause a change Measured in Joules, like Work. Kinetic Energy. Kinetic Energy is the energy of motion All moving objects have Kinetic Energy ( KE )

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The Nature of Energy

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## The Nature of Energy

Motion, Force & Energy Chapter 5.1

Pages 140-145

### What is Energy?

• Energy is the ability to do Work or cause a change

• Measured in Joules, like Work

### Kinetic Energy

• Kinetic Energy is the energy of motion

• All moving objects have Kinetic Energy (KE )

• What determines an object’s KE?

• Mass & Velocity determine the KE of an object.

### Potential Energy

• Potential Energy (PE ) is stored energy

• It has the potential or “possibility” to do work

• Gravitational PE is energy that depends on height

• Elastic PE is for objects that can be stretched.

### Mechanical Energy

• Energy associated with motion (KE & PE)

### Thermal Energy

• Energy of particles in an object

### Chemical Energy

• Energy stored in chemical bonds

### Electrical Energy

• Moving electric charges

### Electromagnetic Energy

• Waves of energy, such as light

### Nuclear Energy

• The fusion or fission of atoms

Which of the following is an example of Kinetic Energy?

A bow string that is pulled back and ready to fire is…

## Exit Pass

What is the difference between Kinetic and Potentialenergy? Give an example of each.