Conservation of Energy

Kinetic Energy

the energy of an object due to its motion

Potential Energy INCREASES as

mass and height increase

Kinetic Energy increases as

mass or speed increases

Potential Energy

Energy that an object has due to its position, condition or chemical composition

Energy

The ability to do work or cause change

Energy Transformation

a change of energy from one form to another

Law of Conservation of Energy

Energy cannot be created or destroyed; it may be transformed from one form into another, but the total amount of energy never changes

The main purpose of a hydroelectric dam is

to create electricity by generating friction due to water over the top of the dam

Points 1 and 5

At what point does the pendulum below have the most potential energy?

You drop pennies off of a 1-story and 10-story building. Which one had the most gravitational potential energy?

The one you drop from the 10th-story

Which of the following is true at the point where you reach the highest point of your ride on a swing?

The potential energy is at a maximum

When there is friction on a roller coaster, some of the potential energy is not converted into:

kinetic energy

Mechanical energy

mechanical energy is the sum of potential energy and kinetic energy.

After a bow is stretched, it has ___ energy

potential

A coal burning power plant uses steam-driven turbines to produce electrical energy. This is an example of

Energy transformation

The thermal energy of a substance changes with the _____ of its particles

speed

The energy you give to an object when you use a force that goes against the force of gravity

Gravitational Potential Energy

When a bat hits a baseball, what is transferred from the bat to the ball?

energy

Point 3

At what ONE point does the pendulum have the most kinetic energy?

The process of changing energy from one kind to another is the process of energy _____________.

Transformation

A basketball falls from the rim and bounces several times. Each bounce is lower and then it stops. Why does it stop?

Energy is transferred to the air and the ground until there is none left for bouncing.

The roller coaster's PE is greatest at

the beginning of the ride

Why did the paper clips have more potential energy than the paper even though the paper was higher off the ground?

Because GPE is related to both mass and height above the ground and the paper clips had greater mass