Energy

Energy is a property of matter and fields, which can be transferred between systems or transformed into different forms but cannot be created or destroyed.

• Everything contains energy including all forms of matter and so all objects.
• Energy is evident in all forms of movement, interactions between, and changes to the forms and properties of matter.
• At an atomic level, energy is evident in the movement of electrons around the nucleus of an atom. Energy is stored in the nucleus of atoms as a result of the forces that bind protons and neutrons together.
• Energy can be transferred between objects, and converted from one form to another, but cannot be created or destroyed.
• Everything in the universe uses energy in one form or another.
• When it comes down to it, matter is energy.
• Light has energy but no mass so does not occupy space and has no volume.
• Energy is often described as either being potential energy or kinetic energy.
• Energy is measured in joules.