Make A Thermometer (continued)

Changing Temperature Scales

The Fahrenheit scale was named after Gabriel D. Fahrenheit who lived from 1686 to 1736. He devised a way of measuring temperature. The Celsius scale was named after Anders Celsius, its inventor, who lived from 1701-1744. The Celsius scale is also called Centigrade. The Centi in centigrade means 1/100 (one one-hundredth) for the 100 equal divisions on the scale and is used by scientists. It is the temperature scale used by most of the world. The difference between the temperature where water freezes and boils is an even number of degrees...100. In the Fahrenheit scale, the difference between freezing (32� F) and boiling (212� F) is 180.

You can change the temperature in Fahrenheit into Celsius using math.
Take your number; subtract 32� from it; and divide the remainder by 1.8.

Example

Change 75 degrees Fahrenheit into Celsius.

75 - 32 = 43

43 / 1.8 = 23.88� C

So, 75� F is equal to 23.88� C

To change the temperature in Celsius to Fahrenheit using math.
Multiply your number by 1.8 and add 32�

Example

Change 12 degrees Celsius into Fahrenheit.

12 x 1.8 = 21.6

21.6 + 32 = 53.6� F

So, 12� C is equal to 53.6� F