Energy Basics
Learn about the definition of energy, the forms that it comes in, and the difference between renewable and nonrenewable sources.
Energy Units Basics
How do we compare different types of fuels? One practical way is to convert the physical units of the fuels into British thermal units or “Btu.” A Btu is a precise measure of the heat content of fuels.
Periodic Table
Coal, natural gas, and oil are hydrocarbons — made up of hydrogen and carbon atoms. Learn more about hydrogen, carbon, and the other chemical elements in this standard periodic table.
Forms of Energy
Energy forms are either potential or kinetic. Potential energy comes in forms that are stored including — chemical, gravitational, mechanical, and nuclear. Kinetic energy forms are doing work — like electrical, heat, light, motion, and sound.
Energy Calculators
From gallons to British thermal units (Btu), kilowatthours to megajoules, short tons to metric tons — this handy calculator converts from one energy unit to another.