What is Energy?

Energy is basically stored work; the ability to do work or move against a resistance.

What is Heat?

Heat is a form of energy. Most people would know heat by how it is measured. It effect on the temperature. There is heat until the temperature reaches absolute zero.

Atmospheric Pressure

The weight of the atmosphere that is exerting force on every point in contact with the said atmosphere.

Air

By definition, air is a gas consisting of a mixture of 23.2% (by weight) of oxygen, 75.5% nitrogen, 1.3% argon and small amounts of several other gases.