Tuesday 16 April 2013

4.3 understand that energy is conserved


Energy can never be lost, only transferred. Energy will always carry on, just in a different form.
For example, when you switch on a light, you are not loosing energy from a battery (chemical), you are just converting it to light energy!

6 comments:

  1. Just to clear up some confusion. On the macro scale (Like black holes and the universe) energy is not conserved. Cosmological redshift is an example of energy not being conserved. The definition of energy starts to get muddy when you explore the massive.

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  3. that was actually rlly helpful im in yr 7 studying physics and dont listen to the other idiots

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