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Energy Definition and Explanation PDF | Download eBooks

Learn Energy definition in biology with explanation to study “What is Energy”. Study energy explanation with biology terms to review biology course for online degree programs.

Energy Definition:

  • Energy is defined as the capacity to cause change, for instance, by doing work.

    Campbell Biology by J.B. Reece, L.A. Urry, M.L. Cain, S.A. Wasserman, P.V. Minorsky, R.B. Jackson



Energy Explanation:

Energy is the ability to do work. It is the property that comes from different sources such as motion, heat, direction etc. and can be transferred from one entity to another but it cannot be created or destroyed. The total energy on earth for example is in a constant form. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed. The SI unit of energy is the joule, which is the energy transferred to an object by the work of moving it a distance of 1 meter against a force of 1 newton.

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