Energy Concepts
The ability to do work
Energy
the product of force and distance
Work
The force a person exerts on a machine
Input
A wheel with a rope used to lift objects
Pulley
Energy changing from one form to another is called
Transformation
Energy that is stored as a result of position or shape
Potential
Power is equal to work divided by:
Time
The force exerted by a machine
Output
A flat surface set at an angle to make lifting easier
Inclined Plane
A toaster changes electrical energy into:
Thermal
The energy of an object due to its motion
Kinetic
Unit of work
Joule
A screw is a type of:
Inclined Plane
A simple machine made of a bar that pivots on a point
Lever
A moving car converts chemical energy into:
Kinetic
Energy stored in bonds between atoms and molecules
Chemical
If the speed of an object doubles, what happens to its kinetic energy?
Quadruples
A machine that makes work easier by changing the size or direction of a force
Simple Machine
A wheel with a rod through its center
Wheel and Axle
A stretched rubber band has ______ energy, and when released becomes ______ energy
Potential → Kinetic
Friction causes kinetic energy to be converted into what kind of energy?
Thermal
Work is only done when a force causes an object to:
Move (or Change Position)
The point on a lever where it pivots
Fulcrum
A device that splits materials apart
Wedge
Solar panels convert sunlight into:
Electrical