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Skills Page

Temperature Conversions
By Aldo Terranova, Class of 2000

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Celsius Scale

The Celsius scale is a scale for measuring temperature. The Celsius scale

is a part of the metric system of measurement. People in most countries

of the world use the Celsius scale for everyday temperature measurement.

Scientists throughout the world also use this temperature scale. On the

Celsius scale, 0 is the freezing point of water and 100 is its boiling

point. The scale is divided into 100 equal parts between those fixed

points. The Celsius scale is often called the centigrade scale because

this word means divided into 100 parts.


Absolute Zero & The Kelvin Scale

Absolute zero is the theoretical temperature at which the atoms and

molecules of a substance have the least possible energy. This

temperature, which scientists believe is the lowest attainable, equals

-273.15 C. The use of these values for absolute zero is based partly on

observations of the relationship between the temperature and pressure of

a gas. When the temperature of a gas confined in a fixed volume is

lowered, its pressure decreases in direct proportion, as though it would

become zero at -273.15 C. A temperature scale that has absolute zero for

its zero point is called an absolute temperature scale. One such scale

is the Kelvin Scale, the international standard for scientific

temperature measurement. On the Kelvin scale, absolute zero equals zero

Kelvin (0 K). The word degree and the degree symbol are not used with

Kelvin temperature readings.


Conversion Rules & Guidelines

The Kelvin scale is related to the Celsius scale. A Kelvin temperature

can be obtained by adding 273.15 to a corresponding Celsius temperature.

For example, 20 C equals 293.15 K.

 

ABSOLUTE ZERO = -273.15 C = 0 K

K = C + 273

Examples

 

I Conversion temperatures from Kelvin to Celsius :

a. +86 K - 273 = -187 C

b. 191 K - 273 = -82 C

c. 533 K - 273 = 260 C

d. 321 K - 273 = +48 C

 

II Conversion temperatures from Celsius to Kelvin :

a. +23 C + 273 = 296 K

b. +58 C + 273 = 331 K

c. -90 C + 273 = 183 K

d. +18 C + 273 = 291 K

 

 


abu006.gif (306 bytes) RETURN TO FORDHAM PREP HOMEPAGE

abu006.gif (306 bytes) CONTINUAL INFORMATION CONCERNING CONVERSIONS

abu006.gif (306 bytes) THE ORIGIN OF THE CELSIUS SCALE

abu006.gif (306 bytes) THE ORIGIN OF THE KELVIN SCALE


TERRANOVA PRODUCTIONS®

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Please forward all questions, comments and criticisms to Gregory L. Curran.
© Copyright 2004 Fordham Preparatory School, All Rights Reserved.
Last Modified February 07, 2008