Potential Energy
What is potential energy?
Stored energy in an object
What is kinetic energy?
The energy in a object due to its motion
Define Work
When a force moves something
Can energy be destroyed?
Nope- it just changes into a different type of energy (potential, kinetic, chemical, heat, sound, electric, light)
What type of energy does a windmill have?
kinetic energy
Give an example of potential energy.
Answers varey:
- domino's waiting to fall
- roller coaster at a top of a hill
- a ball waiting to drop
Give an example of kinetic energy.
Answers varey:
- car rolling down a hill
- domino's falling
- basketball being bounced
Define Energy
The ability to do work
Describe the following energy transfer:
Domino 1 hits into domino 2
- Potential energy changes into kinetic energy.
- Sound energy is created when the domino's hit together
What type of energy does a light bulb have?
Electrical, Light, and heat
Potential energy depends on what two things?
Mass and position
What effects kinetic energy?
Mass and Speed
Define position
An objects location
What type of energy does a tv have?
- electric
- sound
- light
What type of energy does a fire have?
heat and light
Which has more potential energy?
1. The cup sitting on top of the table
or
2. The cup sitting on the ground under the table
1. The cup on top of the table
(its higher which causes more kinetic energy if it falls)
What has more kinetic energy?
1. A 250 LB car traveling at 50mph
or
2. A 250 LB car traveling at 75mph
2. The car traveling at 75mph (it has more speed, which means it has more kinetic energy)
Define motion
The change in the objects position.
What type of energy does a rock have?
- potiental energy
What type of energy does a flower have?
Chemical Energy
True or false:
A stuffed animal sheep sitting on a couch has potential energy?
True
True or false:
A roller coaster sitting at the top of a track has kinetic energy?
False: If it is just sitting it is not moving, so it doesn't have kinetic energy yet
Define energy transfer
The movement of energy from one place to another place
How was energy created?
God created all energy
What types of energy does a waterfall have?
- kinetic and sound