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24 Cards in this Set

  • Front
  • Back

Conduction

the transfer of thermal energy from object to object or particle to particle where there is physical contact

Conductor

a material that permits the flow of heat

Convection

the transfer of thermal energy by the movement of a fluid

Efficiency

the percentage of the input work that is converted to output work

Electric Field

the area around a charged object called a source charge that exerts force on other charged objects

Energy

the ability to do work or cause change

Force

A push or a pull.

Friction

the force that two surfaces exert on each other when they rub against each other

Heat

the transfer of thermal energy from a warmer to a cooler object

Input Force

the force you exert on a machine

Kinetic Energy

energy that an object has due to its motion

Law of Conservation of Energy

the rule that energy cannot be created or destroyed

Lubricant

a substance such as oil or grease that reduces friction between moving surfaces

Machine

a device that makes work easier by changing the amount of force exerted, the distance over which a force is exerted, or the direction in which a force is exerted

Mass

the amount of matter in an object

Mechanical Advantage

the number of times a machine increases a force exerted on it

Output Force

the force exerted on an object by a machine

Potential Energy

the energy an object has because of its position, condition, or the arrangement of its atoms and molecules

Radiation

the transfer of energy through space by electromagnetic waves

Temperature

the measure of the average kinetic energy of the particles of a substance

Thermal Energy

the total internal kinetic energy of all the particles of an object

Thermal Insulator

a material that does not permit the flow of heat

Weight

a measure of the force of gravity acting on an object

Work

force exerted on an object that causes it to move a certain distance