Absolute Zero:

Sham S. Misri

The lowest temperature of all is called absolute zero. 0⁰ Kelvin, (-273⁰ C) or (-460⁰ F). Molecules stop moving. Scientists have cooled substances almost to absolute zero, but the exact temperature can never be reached.

Near absolute zero, the physical properties of some materials change substantially; For example, some metals lose their electrical resistance and become superconductive.

At absolute zero temperature molecules become motionless. Oxygen, which is a gas, becomes liquid at (-218⁰ C).

Celsius temperatures are marked with a ‘C’, (also called Centigrade) scale of temperature. In this scale, water   freezes at 0⁰ C and boils at 100⁰ C.

Temperature at the centre of the sun is about 15 million Celsius.

Temperature at the centre of the Earth is about 4500⁰ Celsius.

Normal body temperature is 37⁰ C or 98.6⁰ F