Charging By Rubbing
Chapter Name : Some Natural Phenomena |
Sub Topic Code : 101_08_15_02_01 |
Topic Name : Charging By Rubbing |
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Sub Topic Name : Charging By Rubbing |
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Introduction
When two objects are rubbed, they can transfer the charge between them.
Pre-Requisites:
Some charges may get introduced when two objects are rubbed.
Activity:
While travelling in a bus, when you slide down from your seat, try to touch the iron pole in front of you. Does it produce shock? ?
Real Life Question:
“Why does a comb sometimes attracts the pieces of paper?” “Have you ever seen a balloon sticking with our hair, why this is so?”
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Charged objects | When an object is rubbed with another object, it receives some charges. That object is called charged object. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| A balloon, comb, paper pieces, refill | All these objects can be charged by rubbing. |
Real life uses :
To produce charges in the body, lightning.
Places to visit :
You have enough materials at home to understand the science behind it. Like, comb, pieces of paper, balloon, refill, plastic, polythene etc.
Practical examples around us
| Examples | Explainations |
|---|---|
| Eraser and wool | Rub the eraser with wool, and find does eraser attract the pieces of paper? |
What you learn in Theory:
When two objects are rubbed with each other, they acquire charge and have tendency to attract the other object.
What you learn in Practice:
Lightning is the process in which charges are collected on the clouds due to rubbing between clouds.