Forms of Energy

Chapter 5Energy and

Energy Resources

Lesson 1

Mr. NighScience 7

Energy

Energy is the ability to cause change

All the activitiestaking place inthis picturerequire energy

EnergyHasMany Forms

Kinetic EnergyThe energy due to motion

Kinetic Energy increases as mass

increases

Kinetic Energy increases as speed

increases

Potential Energy-Stored Energy

Theenergy

of Position

Or Chemical

composition

Gravitational Potential Energy

• Gravitational Potential Energy increases when weights are held overhead

Elastic Potential Energy

• The rubber bands elastic potential energy increases when you stretch the rubber band. Or compress a spring

Chemical Potential Energy

• Chemical potential energy is energy stored in the chemical bonds between atoms. It is released when chemical reactions take place.

Work

Work is the transfer of energy that occurs when force is applied over a distance.

ThisIs

Work

Not Work

Forms of Energy

Mechanical Energy

The energy that

moves objects

Sound Energy

Sound results from the vibration

of particles in solids, liquids, and

gasses***Since sound

needs tooriginate from

particles in the air

vibrating, it cannot travel

through

Empty Space

Thermal EnergyThe total amount of energy from

the movement of particles that make-up objects

Always moves from warmer to colder

objects

Electric Energy• When you turn on a fan, electric current runs

through the motor. Electric energy is the energy that an electrical current carries.

Radiant Energy

Energy transmitted through space in the form of electromagnetic waves

Nuclear EnergyThe center of an atom-the nucleus is

where nuclear energy is stored. When a heavy atom breaks apart

(fission) or when two small atoms join together (fusion) energy is

released

The Sun a controlled

fusion reaction due to vast amounts of heavy

elements

Chemical EnergyEnergy that is stored

in the chemical composition of matter

Study Questions1. Which type of energy increases when

you compress a spring?2. Which type of energy increases when

you lift a large box? 3. What is the energy of motion?4. What form of energy is due to the motion

of particles?5. What form of energy can travel through

space?6. What form of energy is stored in the

nucleus of an atom?