PARTICLE THEORY OF MATTER, CONDUCTION - SCIENCE

AIM - TO OBSERVE CONDUCTION ALONG A METAL ROD

METHOD - 1. SET UP AND LIGHT A BUNSEN BURNER
                     2. SMEAR A SMALL AMOUNT OF PETROLEUM JELLY ON THE HEAD OF                                 EACH DRAWING PIN
                     3. ATTACH THE DRAWING PINS AT EVEN INTERVALS ALONG THE                                          LENGTH OF THE METAL ROD
                     4. CLAMP ONE END OF THE METAL ROD TO A RETORT STAND
                     5. POSITION THE RETORT STAND SO THE UNCLAMPED END OF THE                                      METAL ROD IS IN THE BUNSEN FLAME
                     6. RECORD THE TIME IT TAKES FOR EACH PIN TO DROP IN THE TABLE                                 BELOW


DISCUSSION - When particles at one end of a metal rod are heated, they begin to vibrate more. Vibrating particles collide within sticking particles making them vibrate faster and transferring they energy along the bar.

PIN NUMBER	Time to drop (sec)
1	3 sec
2	8 sec
3	13 sec
4	13sec
5	13sec