physics - energy

• energy is the ability to do work or make change happen
• what unit of measurement is used to measure energy?

  Joule
• the law of conservation of energy is energy can not be created or destroyed but can be transferred or transformed
• temperature is a measure of the average kinetic energy of the particles in a substance that result in how hot or cold the substance is
• radiation is heat transfer as a wave which can even travel through the vacuum of space