Help quick How can you observe the law
of conservation of energy in
action at the skate park? How
does this show that energy
was not created or destroyed?

The law of conservation of energy states that energy cannot be created or destroyed but can be converted or transferred. So when you're eating a burger which has chemical energy, it is transferred to mechanical energy if you go out and ride a bicycle. Another example is when the Sun which is thermal energy shines on the apple tree, it is converted to chemical energy because the apple has chemical energy. Transferred is pretty similar.

i think tornado but not 100%