People also ask


  • Is energy always conserved?

  • Energy Can Neither Be Created Nor Destroyed Is energy always conserved, even in the case of the expanding universe? The conservation of energy is an absolute law, and yet it seems to fly in the face of things we observe every day. Sparks create a fire, which generates heat鈥攎anifest energy that wasn鈥檛 there before. A battery produces power.

  • What happens to energy when it changes form?

  • Sparks create a fire, which generates heat鈥攎anifest energy that wasn鈥檛 there before. A battery produces power. A nuclear bomb creates an explosion. Each of these situations, however, is simply a case of energy changing form.

  • Are we aware of the existence of energy?

  • We’re definitely aware it exists, and we’ve called it energy. No problem there. Living with it, trying to figure it out, and working with it is hard.

  • How much energy was created when the universe came into existence?

  • Hence, no energy needed to be 鈥渃reated鈥?when the universe came into existence. While it seems obvious that there is a huge amount of energy in the particles and radiation that pervade the universe, this energy may be balanced by negative energy caused by the gravitational attraction between the particles.

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