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Heat and Thermodynamics

A series of free High School Physics Video Lessons from Brightstorm online Physics series.

Temperature
Temperature is the measure of the average kinetic energy of the particles in an object. Temperature in science is measured in Celsius or Kelvin.

Heat
Heat is the transfer of kinetic energy from one object to another. According to the 2nd Law of Thermodynamics, heat always transfers from a hot object to a cold one, never the reverse.

Pressure
Pressure is defined as force per unit of square area. Pressure is measured in pascals (Pa) which is equal to one Newton per square meter.

Kinetic and Potential Energy of Atoms
Kinetic and potential energy of atoms result from the motion of electrons. When electrons are excited they move to a higher energy orbital farther away from the atom. The further the orbital is from the nucleus, the higher the potential energy of an electron at that energy level. When the electron returns to a low energy state, it releases the potential energy in the form of kinetic energy.

Conservation of Energy

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