ENERGY TRANSFORMATION

Bab II. Work and Energy
ENERGY TRANSFORMATION
I. Objective:
Observe the energy transformation.
II. Equipment and Materials:

a. A light bulb
b. A battery
c. 3 connecting cables
d. 2 clips
e. An electric switch

III. Basic theory:
If you heat water up with a petroleum stove, then the chemical energy contained in petroleum changes into heat energy in the water. The energy can change in form. The change of energy from one form to another is called energy transformation.
A battery stores chemical energy. If the battery is connected to an electric circuit, then electric energy would flow through the connecting wire. If there is a light bulb in the circuit, then electric energy will heat the wolfarm wires in the bulb. As a result of the heating, the wolfarm wire will glow and radiate a light. Hence, its happen transformation energy.
( Prasodjo, Budi ;2009 : 57)

IV. Procedures :
1. Set the instrument like the picture below.

2. Turn on the light bulb by pressing the switch.
3. After a few moment, hold the bulb! what do you feel?
4. Write all the data of activity result in the following table.

V. Observation Table :


No. Observasion
Before switch After switch





VI. Question :
1. How many kinds of energy which participate in the circuit?
2. What is your conclution about from the activity above?