Page 132 - Science Class 6 Times Publication

Conductivity

The property of matter to transfer heat and electricity from one
point to another is called conductivity. Hence, the conductors are
the substances which transfer heat and electricity from one point to
another. Metals are the good conductors of heat and electricity.

Activity 12.2
To identify conductors

Materials required:

An electric circuit, iron nail, thin and short piece of wood, plastic,
coin, steel spoon, thread, long hair, piece of paper, aluminium
wire, ribbon, etc.

Procedure

1. Construct an electric circuit by connecting a bulb with two ends
of a battery with the help of copper wire as shown in the  gure.

2. Break the wire at any point and connect the two ends of wires
with the materials mentioned above. Then observe the cases
when the bulb glows.

Observation

When the two ends of wire are connected with the metal pieces such
as iron nail, steel spoon, coin, aluminium wire, etc the bulb glows. It
does not glow in other cases.

Conclusion: The metals are the good conductors of electricity. So,
electricity easily passes through them and the bulb glows.

Times' Crucial Science and Environment 128 Book 6