Energy Unit Vocab Flashcards
Vocab Flashcards
Kinetic Energy
The energy a moving object has because of its motion.
Potential Energy
Stored energy due to position.
Elastic Potential Energy
Energy stored by something that can stretch or compress, such as a rubber band or spring.
Chemical Potential Energy
Energy stored in chemical bonds.
Gravitational Potential Energy
Anything that can fall has stored energy.
Mechanical Energy
The total amount of potential and kinetic energy in a system and can be expressed by this equation.
Law of Conservation of Energy
States that energy cannot be created or destroyed.
Work
Transfer of energy that occurs when a force makes an object move.
Power
The amount of work done in one second, the rate at which work is done.
Machine
A device that makes work easier.
Input Force
The force that is applied to the machine.
Output Force
The force applied by the machine.
Mechanical Advantage
The ratio of the output force to the input force.
Efficiency
A measure of how much of the work put into a machine is changed into useful output work by the machine.
Simple Machine
A machine that does work with only one movement of the machine.
Lever
A bar that is free to pivot or turn around a fixed point.
Pulley
A grooved wheel with a rope, chain, or cable running along the groove.
Wheel and Axle
A simple machine consisting of a shaft or axle attached to the center of a larger wheel, so that the wheel and axle rotate together.
Inclined Plane
A sloping surface that reduces the amount of force required to do work.
Screw
An inclined plane wrapped in a spiral around a cylindrical post.
Wedge
An inclined plane with one or two sloping sides.
Compound Machine
Two or more simple machines that operate together.
