3.7 where does energy go?

Question 1

what is useful energy?

Answer 1

when energy is changed the way we want

Question 2

what is wasted energy

Answer 2

energy that is changed in way we do not want and do not use

Question 3

what is dissipated energy

Answer 3

energy that spreads out where there is no use for it

Question 4

define recovered

Answer 4

collected and used again

Question 5

draw an energy conversion diagram to show what happens when water is heated

Answer 5

chemical > thermal

Question 6

draw an energy conversion diagram to show energy transferred in motorcyles. which energy is wasted or dissipated and which energy is useful?

Answer 6

chemical > thermal
> kinetic
> sound

thermal — wasted

kinetic — useful

sound — wasted

Question 7

how much energy is transferred into useful energy and how much energy is transferred into wasted energy?

Answer 7

25% useful

75% wasted

Question 8

draw an energy conversion diagram to show energy transferred in light bulbs. which energy is wasted or dissipated and which energy is useful?

Answer 8

chemical > light
> thermal

light is useful energy
thermal is wasted energy