Page 150 - Science Class 06

During the process of transferring charges This lightning conductor is made up of a
from one cloud to another a great amount pointed conductor and good quality wire.
of energy is also released that causes a loud The metallic rod is placed at the highest point

sound called thunder. of the building and a wire is connected with it
Lightning Conductor properly. The other end of the wire is
properly earthed in the ground. When the
A scien st named Franklin proved that
charge is discharged from the clouds and it
lightning is a form of electricity. He
comes near the building, the lightning
suggested that if a metal rod is installed on
conductor a racts the charge and let it pass
the top of the building and connected by
through it to the ground. In this way, the
wires to the ground, and lightning occurring
building is protected.
near the structure would pass through the
metal rod and into the ground without Precau ons During Lightning
harming the building. This equipment is To avoid the effect of lightning we should
called a lightning conductor. keep following points in our mind:

v We should not stand near a tall tree or
metallic pole.

v Remove the cord of antennae from the
television.

v We should not adjust television antennae.

Benjamin Franklin
1. What is lightning? How does it occur?

2. What is thunder?
3. Why do we use lightning conductors?

4. What precau ons should we take to
avoid the impact of lightning?

A Lightning Conductor

Evaporation : Turning of water into water vapours due to heat
Condensation : The process in which vapour turns into liquid

Cloud : Mass of water droplets or ice crystal formed due to condensation of water
vapour
Melting point : The temperature at which a solid melts
Boiling point : The temperature at which a liquid boils

150 Science-6