Energy Glossary | Young Education

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E

efficiency

the ratio of useful output or work done to the total input or energy expended. It's like the yardstick that measures how effectively we utilize our resources and get the most bang for our buck.

elastic

both momentum and kinetic energy are conserved in this collision

elastic potential

the energy stored in an elastic object, such as a stretched or compressed spring, when it is deformed from its equilibrium position. It's like the hidden energy waiting to be released, as if the object is eagerly anticipating its chance to bounce back.

energy

the capacity to do work or bring about change. It's like the cosmic fuel that drives the motion and transformations we observe in the world around us.

energy density

the amount of energy stored in a given volume or mass of a substance. It's like the measure of how much energy is crammed into a tiny space, ready to be unleashed.