Question

A battery lights a bulb. Describe the energy changes involved in the process.

Answer 1

A battery contains Chemicals and supply electric energy. So a battery converts chemical energy into electrical energy.

In an Electric bulb electrical energy is first converted into heat energy. This Heat energy causes the filament of bulb to become white hot and produce light energy.

So the energy changes involved when a battery lights up a bulb are:

Chemical energy------->electrical energy----->heat energy ----->light energy

================================================================

Hope this will help you...

Answer 2

A battery converts chemical energy into electrical energy. This electrical energy is further converted into light energy and heat energy.

Chemical---->Electrical --
energy. energy
------->Heat ---->Light
energy energy