Energy

First some review… Write down your definition of energy.

Energy is …is the ability to make things move the ability to do work Energy can not be created or destroyed

Energy is divided into All Energy Potential Energy Kinetic Energy

What is Energy What is Kinetic Energy What is Potential Energy http://studyjams.scholastic.com/studyjams/jams/science/matter/energy-and-matter.htm

What is Potential Energy? Energy that is stored and waiting to be used later

Substances like wood, coal, oil, and gasoline have stored energy because of their chemistry – they can burn Stored energy is potential energy

What is Kinetic Energy? Energy an object has due to its motion K.E. = .5(mass x speed2)

Potential Energy can be changed into Kinetic Energy Also Kinetic Energy can be changed into Potential Energy

The seven types of energy… Chemical - gasoline, Light – flash light, Heat – burner on a stove, Nuclear - sun, Mechanical - car, Sound – music on the radio, Electrical - lightning https://www.brainpop.com/science/energy/formsofenergy/

A Roller Coaster A roller coaster speeds along its track. It has kinetic energy because it is moving.

As it slows to a stop at the top of a hill, it has potential energy because of where it is. It has the potential to move because it is above the ground and has somewhere to go.

What type of energy is this? (Remember the seven types?)

Right, mechanical. What if the cars crashed and burned Right, mechanical. What if the cars crashed and burned? What type would it be?

Right, heat.

Do Now Look around the room and give 2 example each of how energy can change from one form to another. Make sure you use the all seven types of Energy.