Description: A motet for Christmas Day from Selectae quaedam cantiones sacrae, Nuremberg, 1571. Published as the pendant second part of the motet Hodie Christus natus est, this edition is offered as an independent piece.
The universe is made up of matter and energy. Matter â anything that has mass and takes up space â is pretty straightforward and easy to grasp, but energy is a bit more abstract. In physics, energy is the ability to do work, or the ability to move or elicit change in matter.
Heat energy, also referred to as thermal energy, is really the effect of moving molecules. Matter is made up of molecules, which are in continual motion and in a solid, vibrate about a mean position. The motion of any molecule increases when the energy of the substance is increased.