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Sci ch 4 9-24

QuestionAnswer
Work is force applied through a distance.
Machine is a device that changes the force or increases the motion from work.
Simple Machine is a machine that does work with only one movement of the machine.
Compound Machine Combination of two or more simple machines
Efficiency is the ratio of output work to input work.
Mechanical Advantages is the ratio of the output force to input force.
Energy is the ability to cause change.
System is anything around which you can imagine a boundary.
Kinetic Energy is energy due to motion.
Potential energy is energy that is stored due to the interactions between objects.
Elastic Potential Energy is energy that is stored by compressing or stretching an object.
Chemical Potential Energy is energy that is due to chemical bonds.
Gravitational Potential Energy is energy that is due to the gravitational forces between objects.
Law of Conservation of Energy states that energy cannot be created or destroyed.
Mechanical Energy is the sum of the kinetic and potential energy of the objects in a system.
Power is the rate at which energy is converted.
Created by: sloancaston
 

 



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