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What is energy?
What is energy?
In science, energy is the ability to do work or heat objects. It is a scalar physical quantity, which means it has magnitude, but no direction. Energy is conserved, which means it can change from one form to another, but isn’t created or destroyed.
Etimology
Etimology
The word "energy" comes from the Latin energīa, which is taken from the Greek ἐνέργεια ("enérgeia," meaning force or capacity for action). It is composed of ἐν- (en-, as in "encephalon"), ἔργον (ergon = action, work), and the Greek suffix -ía (< eia), which indicates quality.
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