energy 20marksII

kinetic energy- 動能- When an object is moving, it has kinetic energy.
eg. a running horse, a flying plane...

potential energy-勢能- It is a form of stored energy. An object in a stretched(伸展) or compressed(壓縮) state may have potential energy.
eg. a stretched bowstring(弓弦), a compressed spring(彈簧)

Others: Heat energy(熱能) eg. heater
Light energy(光能) eg. lightning
Sound energy(聲能) eg. piano
Electrical energy(電能) eg. TV
Chemical energy(化學能) eg. Food and Human
Nuclear energy(核能) eg. ...

chemical energy即係....battery個d....

potential energy即係.....調起佢......即係.

..eg我令起枝pen,係半空,,

就係kinetic energy change to potential energy

heat energy..即係熱啦.....

,electrical energy 即係電啦....

light energy 光啦////