###
English system

a nondecimal system of measurement without basic units

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metric system

a decimal system of measurement with basic units

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meter

the basic unit of length in the metric system

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gram

the basic unit of mass in the metric system

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liter

the basic unit of volume in the metric system

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second

the basic unit of time in the metric system

###
International System

a comprehensive system of measurement with seven base units

###
unit equation

a statement of two equivalent values, for example, 1 in = 2.54 cm

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exact equivalent

a statement of two exactly equal values, for example 1 m = 100 cm

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unit factor

a ratio of two quantities that are equivalent, for example, 1 lb/454 g

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reciprocal

the relationship between a fraction and its inverse, for example, 1 qt/946 mL and 946 mL/1 qt

###
unit analysis method

a procedure for solving problems that proceeds from a given value to a related answer by the conversion of units

###
cubic centimeter

the volume occupied by a cube 1 cm on a side

###
volume by displacement

a technique for determining volume from the amount of water displaced

###
density

the amount of mass in one unit of volume

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specific gravity

the ratio of the density of liquid compared to the density of water at 4°C

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heat

the flow of energy from an object at a higher temperature to an object at a lower temperature

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temperature

the average kinetic energy of molecules in motion

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Fahrenheit degree

the basic unit of temperature in the English system

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Celsius degree

the basic unit of temperature in metric system

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Kelvin unit

Basic unit of temperature in the SI system

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specific heat

amount of heat required to raise 1g of substance 1°C

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calorie

amount of heat required to raise 1g of water 1°C

###
joule

unit of energy in the SI system

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