11.1 Temperature
What is temperature?
Temperature
 hotness or coldness of a
material.
 where the heat should flow
 higher temperature to lower
temperature
Length, Mass, Temperature
m = length
g = Mass
? = Temperature
 Fahrenheit
Celsius
Kelvin
11.1.1
Temperature Scales
The scientists …
Daniel Gabriel
Fahrenheit
Anders Celsius
Lord William Thomson
Kelvin
11.1.1.1
The Fahrenheit Scale
Daniel
Gabriel
Fahrenheit
11.1.1.2
The Centigrade or
Celsius Scale
Anders
Celsius
11.1.1.3
The Kelvin
Scale
Lord
William
Thomson
Kelvin
Absolute
Scale
11.1.1.4
Temperature
Conversions
Formulas
Example 1
An ordinary room temperature in the
Philippines, 26.0°C, in °F?
Solution: Using the formula
then substitute
Example 2
A body temperature of 98.6°F in
Celsius?
Solution: Using the formula
then substitute
Example 3
Very cool day in Baguio City,
14.0°C in Kelvin?
Solution: Using the formula
then substitute
Now, it’s your turn.
Problem:
Express normal body
temperature, 98.6°F, in
°C and K.
Solution
The Fahrenheit to Celsius conversion equation may
be expressed in this form:
To solve for Celsius:
°C = (98.6 °F – 32) x 5/9
°C = (66.6) x 5/9
°C = 37.0
To solve for Kelvin:
K = °C +273
K = 37.0 + 273
K = 310
Answer
98.6 °F is equal to 37.0°C
and 310 K
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