# HEAT AND TEMPERATURE || RELATION BETWEEN HEAT AND TEMPERATURE

#### INTRODUCTION:

• When we touch the heat it's feel 'hot' but water kept in the refrigerator feels 'cold' .

#### HEAT:

Heat is a form of energy which makes us feel hot or cold. The molecules of a body are in a state of rapid motion and the higher the temperature the faster they move . Heat can be identified with the kinetic energy of the molecules in motion.

• unit of heat is :calorie

#### TEMPERATURE

• The degree of hotness of a body , compared with some standard of the temperature of body,
• unit of temperature
The SI unit of temperature is kelvin (k). and other common unit of temperature used in degree Celsius (⁰C) and Fahrenheit (⁰F) .

K = C + 273

Where , K = Temperature in kelvin scale
C = Temperature in Celsius scale

#### Freezing and Boiling points in different temperature

 Scale Freezing point Boiling point Centigrade (⁰C) 0⁰C 100⁰C Fahrenheit (⁰F) 32⁰F 212⁰F Kelvin (K) 273K 373K

#### FORMULA

Convert centigrade to Fahrenheit & to kelvin

1.  C/5 = (F - 32) / 9
2.  C/5  = (F - 32 ) / 9 = (K - 273) / 5