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PS CH 4 VOCAB JM

Section 1 and 2

QuestionAnswer
Sum of the potential energy and kinetic energy in a system. Mechanical Energy
Energy a moving object has because of its motion. Kinetic Energy
SI unit of energy Joule
Stored energy an object has due to its position. Potential Energy
Energy stored when an object is compressed or stretched. Elastic Potential Energy
Energy stored in chemical bonds. Chemical Potential Energy
Energy stored by objects due to their position above Earth's surface. Gravitational Potential Energy
States that energy can never be created or destroyed. Law of Conservation of Energy
A push or pull. Force
A device that makes doing work easier. Machine
The force that is applied to the machine. Input Force
The force applied by the machine. Output Force
The ratio of the output force to the input force. Mechanical Advantage
A measure of how much of the work put into a machine is changed into useful output work by the machine. Efficiency
Movement- lever, pulley, wheel, and axle, inclined plane, screw, and wedge. Simple Machine
Simple machine consisting of a bar free to pivot about a fixed point called the fulcrum. Lever
Along the groove; can be either fixed or movable. Pulley
Wheel, so that the shaft and the wheel rotate together. Wheel and Axle
Increasing the distance over which the force is applied. Inclined Plane
Plane wrapped in a spiral around a cylindrical post. Screw
Simple Machine that is an inclined plane with one or two sloping sides. Wedge
Machine that is a combination of two or more simple machines. Compound Machine
Created by: 2TRAYS!!!!
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