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by Procheta Mallik

Introduction

Rub a balloon on different surfaces, e.g. hair, cotton cloth, silk, plastic etc. and see if it attracts or repels different materials.

Video Overview

    • Handle round pin and scissors with care

  1. Using a scissors make a small hole on foam piece. Mount a 15 cms stiff straw on Foam piece. Mount a 15 cms stiff straw on Foam piece.
    • Using a scissors make a small hole on foam piece.

    • Mount a 15 cms stiff straw on Foam piece.

  2. Take another straight straw and  Insert a  round pin at  the centre. Insert the round pin on the mounted straw so that the first straw is perpendicular to second straw. Blow a balloon and tie the end. Now rub the balloon  on the straw for 2 minutes.
    • Take another straight straw and Insert a round pin at the centre.

    • Insert the round pin on the mounted straw so that the first straw is perpendicular to second straw.

    • Blow a balloon and tie the end. Now rub the balloon on the straw for 2 minutes.

    • When two electrostatic materials are rubbed, electrons move from one material to the other.

    • Rub the balloon against straw and then start moving the balloon around the straw.

    • Materials should be electrostatic.

    • Good rubbing of electrostatic material around 1 minute is required.

    • Give electrostatic examples , from daily life .

    • Observe the bending of water using different electrostatic materials other than balloon.

    • Try bending different liquids like salt water, dil HCl etc.

    • Bending water with static electricity produced by rubbing an inflated balloon on your head.

    • To show how static electricity bends a thin stream of water flow.

    • Paper cup, balloon, skewer stick, water container.

  3. Using a skewer, make a hole at the bottom of the paper cup. Using a skewer, make a hole at the bottom of the paper cup. Using a skewer, make a hole at the bottom of the paper cup.
    • Using a skewer, make a hole at the bottom of the paper cup.

  4. Blow the balloon as shown. Seal the balloon by tying a knot.
    • Blow the balloon as shown.

    • Seal the balloon by tying a knot.

  5. Take the balloon and rub it on your head. When you rub a balloon on your head, it causes opposite static charges to build up both on your hair and the balloon. Fill the paper cup with water. Allow the water to flow through the small hole.
    • Take the balloon and rub it on your head.

    • When you rub a balloon on your head, it causes opposite static charges to build up both on your hair and the balloon.

    • Fill the paper cup with water. Allow the water to flow through the small hole.

    • The water flow must be in a narrow stream.

    • Slowly move balloon towards the stream of water (without touching it).

    • We observe that the stream of water bends towards the balloon.

Finish Line

Suchitha Vishwa

Member since: 05/02/2017

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