Energy Flashcards
What energy conversion is about to take place in this picture.
Elastic Energy
to
Translational Kinetic Energy
Defined as “the ability to cause a change.”
Energy
Stored Energy is often called
Potential Energy
In science, work is often defined as
The change in energy caused by a force.
Work = Force x Distance
What energy conversion took place before the apple hit Newton in the head?
Gravitational Potential Energy
to
Translational Kinetic Energy
What energy conversion takes place in a hydroelectric dam?
Gravitational Potential Energy in the water held behind the dam is converted to Electrical Energy.
What type of energy is contained in the food you eat?
Chemical Potential Energy
What energy storage mechanisim is present here?
Rotational KInetic Energy
What energy conversion is taking place in the plants in the greenhouse?
Radiant Energy
to
Chemical Potential Energy
(This is what photosynthesis does)
What energy storage mechanism is pictured here?
Gravitational Potential Energy
The Law of Conservation of Energy states that:
Energy cannot be created or destroyed.
(It can, however, be converted in to different types of energy)
The percent of “work” put into a machine that is converted into useful “work” output.
Efficiency
A device, such as a lever or pulley, that increases or decreases the force (or simply changes the direction of the force).
Machine
How much work is done divided by the time it takes to do that work is called….
Power
The unit of power.
(It is a joule/second)
Watt
The product of the force applied to an object and the distance the object moves.
(This assumes the force and movement are both in the same direction)
Work
A push or a pull is a ____________.
Force
How quickly work gets done.
Power
GPE
stands for
Gravitational Potential Energy
TKE
stands for
Translational Kinetic Energy
(energy of an object moving from one place to another)
RKE
stands for
Rotational Kinetic Energy
(The energy of a spinning object)
