What is the definition of potential energy?
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Stored up energy that has the potential of becoming kinetic energy (not moving at the present time but has the potential to move).
100
What is the definition of kinetic energy?
Energy an object has because of its motion.
100
What is gravitational potential energy?
Potential energy due to an object's height above the ground.
100
What is elastic potential energy?
The energy of an object that can be stretched and then goes back to its original shape
100
What is mechanical energy?
The total amount of energy in an object.
200
How can you tell if an object has potential energy but not kinetic energy?
It will not be moving.
200
How can you tell if an object has kinetic energy?
It is moving
200
What two factors determine the amount of gravitational potential energy an object has?t
Height and weight (how high and how heavy)
200
What is an example of an object that would have elastic potential energy?
rubber band, trampoline, headband etc.
200
True of False: An object can have potential energy and kinetic energy at the same time.
True
300
When bouncing a tennis ball, and which times was the energy potential?
When it was in someone's and and for the very short time it hit the ground before it bounced.
300
What is work?
The transfer of energy
300
What force in nature are you working against when you lift an object off of the ground?
Gravity
300
Name an item that would not be an example of an item containing elastic potential energy
aluminum foil, paper, etc. Something that would not go back to it's original shape.
300
Name an example and situation in which an item would have potential and kinetic energy at the same time.
airplane flying in the air, students standing on books and moving feet, etc.
400
How is potential energy different from kinetic energy?
It is stored energy and the object is not moving
400
What is the definition of energy ?
The ability to do work or cause change.
400
When you lift an object off the ground, why is it considered work?
You are working against the force of gravity that wants to keep objects off the ground.
400
Your little sister is standing up and playing with a slinky. What two forms of energy are contained in the slinky as your sister is playing with it?
elastic potential and gravitational potential energy
400
To have mechanical energy, does an item have to contain both potential and kinetic energy?
No it is the total of all energy, whether it is potential, kinetic or both
500
What is the Law of Conservation of Energy?
Energy cannot be created or destroyed, it just changes into different forms.
500
How is the scientific definition of work different than the definition used in every life?
The scientific definition of work is the transfer of energy and the everyday definition often refers to a place of employment.
500
With a rubber band, when is the potential energy stored in the rubber band and when is the kinetic energy released?
Potential energy is stored when the rubber band is stretched out of shape, and kinetic energy is released when the rubber band goes back to its original shape (or flies through the air).
500
True or False: When we were bouncing the basketballs, the potential energy of the basketballs were both gravitational potential energy and elastic potential energy and this energy was converted into kinetic energy.
True because the basketball was off the ground and when the ball hit the ground it was stretched by the floor and then it went back to it's original shape.
500
Please name at least three of the forms of energy we read about yesterday other than the one on our jeopardy board.