Energy Flash Cards
Kinetic Energy
The energy a moving object has because of 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
Energy stored by objects due to their position above Earth’s surface
Mechanical Energy
It is the total amount of potential and kinetic energy in a system and can be expressed by ME = PE +KE
Law of Conservation Energy
States that energy cannot be created or destroyed
Work
The transfer of energy that occurs when a force makes an object move
Power
The amount of work done in one second
Machine
A device that makes doing work easier
Input Force
The force that is applied to the machine
Output Force
The force applied by the machine
Mechanical Advantage
Calculated by dividing the input distance by the output distance
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 one simple movement
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 a long 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 rotted together
Inclined Plane
A sloping surface, such as a ramp that reduces the amount of force required to do work
Screw
An inclined plane that 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
