TEMPERATURE AND ITS MEASUREMENTS

Temperature

Temperature is defined as the degree of hotness or coldness of a body.  The S.I unit of temperature is Kelvin.  The Kelvin scale is called the absolute or thermodynamic scale.  Other common scales of temperature are centigrade or Celsius (⁰C) and Fahrenheit (⁰F).

0 ⁰C = (0 + 273) K

The need to have two reference or fixed points of temperature called the upper and lower fixed points gave rise to different temperature scales. 

Upper fixed point: This is the temperature of steam from pure water boiling at standard atmospheric pressure. On the Celsius scale, it has the value of 100⁰C.

Lower fixed point: This is the temperature of pure melting ice at standard atmospheric pressure.  On the Celsius scale, it has the value of 0⁰C.

The interval between the upper and lower fixed points is called the fundamental interval.

Topics for SSS 1 to SSS 3 based on my Physics Scheme of Work

Recently, WAEC added some topics to the Physics syllabus in Nigeria and they started testing students on these topics in the 2014 May/June examination.  In case you are not aware, I'll advise you to download the new WAEC (Physics) syllabus here. 
These topics have been incorporated in the scheme of work that I use in school as a Physics teacher and I think it will also be nice to post the topics in my new scheme of work online.  This is because I will base all my online Physics tutorial for Senior Secondary Schools on these topics.

The topics are divided into year 10, year 11 and year 12 i.e. SSS 1 to SSS 3. The new topics are asterisked.