# Energy Laws & Types.

## Presentation on theme: "Energy Laws & Types."— Presentation transcript:

Energy Laws & Types

Energy: the ability to do work or cause change

Energy is always involved when physical or chemical changes occur in matter

You can detect the effects of energy when matter is moved, when it reacts, or when energy is transformed from one form to another form

Law of Conservation of Energy: Energy cannot be created or destroyed, it can only change from one form to another

2 Main Types of Energy: Potential or Kinetic

Potential energy is stored energy that has not been used.

Examples Potential Energy

Batteries Potential energy

Food

Gasoline (fuel)

Pulled back Bow and Arrow
A stretched back arrow has potential energy

Rollercoaster at top of hill
Potential energy at top of coaster.

Do you have more examples of potential energy?

An object has potential energy because of its position, shape, or chemistry

An object’s potential energy is increasing as it gets higher

The more mass an object has the more potential energy it has

Kinetic energy is energy of motion.

Examples Kinetic Energy

Swinging a Hammer

Throwing a Ball

Running

Weather

Bowling Kinetic energy of ball is transferred to pins

Do you have more examples of kinetic energy?

The amount of kinetic energy an object has depends on its mass and speed

The faster the object goes, the more kinetic energy the object has

An object with a larger mass will have more kinetic energy than a smaller object at the same height

As the potential energy increases, the kinetic energy decreases

As the potential energy decreases, the kinetic energy increases

Examples both Potential and Kinetic energy

Pendulum Wrecking ball has potential energy. Hand has kinetic energy

Trampoline Potential energy when you are at top of bounce. Potential energy when trampoline is stretched down towards ground.

Avalanche

Waterfall

Energy Skate Park

What is the relationship of potential and kinetic energy?

Potential and kinetic energy are inversely proportional