energy transformation

electric fan

• input :electric output:heat

• input :electric output:Kinetic

• input:kinetic output:electric

water dam

• input:kinetic output:electric

• input:electric output:kinetic

• input :GPE output:kinetic

microwave

• input:electric output:thermal

• input :thermal output:kinetic

• input :thermal output:electric

the law of conservation of energy states that:

• energy is never created but it can be destroyed

• energy is created but never destroyed

• energy can never be created nor destroyed

when a ball is on a hill which of the following is true

• it has both GPE and kinetic energy

• it has only kinetic energy

• it has only GPE

if the mechanical energy of a ball on the hill is 500J then as it falls just before touching the ground

• the mechanical energy will be 500J

• the kinetic energy is 500J

• the GPE is 500 J

A leaf

• input:kinetic output:light

• input:light output:chemical

• input:electric output:chemical

burning wood logs to make fire

• inptut:chemical output:heat

• input :heat output:light

• input:light output :heat

Torch

• input:electric output light

• input:chemical output:electric

• input:chemical output:light

Television

• input:electric output:kinetic

• input:electric output:GPE

• input:electric output:light