Energy

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Across
  1. 2. the standard unit of work or energy
  2. 4. a large body of matter with no definite shape
  3. 5. the strength and vitality required for sustained physical or mental activity
  4. 7. the degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.
  5. 8. activity involving mental or physical effort done in order to achieve a result
Down
  1. 1. is defined as a form of energy which transfers among particles in a substance
  2. 3. is a type of kinetic energy with the ability to form types of light people can see as well as invisible waves.
  3. 6. the standard unit of force