1  

2  

3

4  

5  

CluesClues1.1. This rubbing action applies a force which makes This rubbing action applies a force which makes

insulators become charged.insulators become charged.2.2. This is what happens when like (the same) charges This is what happens when like (the same) charges

are close together.are close together.3.3. This is what happens when opposite charges come This is what happens when opposite charges come

together.together.4.4. This allows electrons to move through it.This allows electrons to move through it.5.5. This does not allow electrons to move through it.This does not allow electrons to move through it.

1 FF RR II CC TT II OO NN  

2 RR EE PP EE LL  

3 AA TT TT RR AA CC TT

4 CC OO NN DD UU CC TT OO RR

5 II NN SS UU LL AA TT OO RR  

CluesClues1.1. This rubbing action applies a force which makes This rubbing action applies a force which makes

insulators become charged.insulators become charged.2.2. This is what happens when like (the same) charges This is what happens when like (the same) charges

are close together.are close together.3.3. This is what happens when opposite charges come This is what happens when opposite charges come

together.together.4.4. This allows electrons to move through it.This allows electrons to move through it.5.5. This does not allow electrons to move through it.This does not allow electrons to move through it.

Lesson.1: Lesson.1: Static ElectricityStatic Electricity

ObjectivesObjectives State how an object gains an electrostatic State how an object gains an electrostatic

charge.charge. State which type of materials can gain a State which type of materials can gain a static charge through friction.static charge through friction. Explain the experimental observations using Explain the experimental observations using

your knowledge of electrostatics.your knowledge of electrostatics.

P.4 Radiation for LifeP.4 Radiation for Life

Static Electricity : Static Electricity : Charging by frictionCharging by friction

Some materials become Some materials become

positive when rubbed positive when rubbed

giving electrons to the cloth.giving electrons to the cloth.

The charge of the cloth is equal and opposite to the The charge of the cloth is equal and opposite to the charge of the rod.charge of the rod.

Some become negative Some become negative

taking electrons from the taking electrons from the

cloth.cloth.

Static Electricity : Static Electricity : Law ofLaw of ChargesCharges

Like charges repelLike charges repel

Unlike charges attractUnlike charges attract

DEMO Gold leaf electroscope

Lightning can be reproduced in the lab!Lightning can be reproduced in the lab!

Plenary

Learning Objectives

• Describe and recognise that insulating materials can become charged when rubbed with another insulating material.

• State that there are two kinds of charge:positive;negative.

• State and recognise that like charges repel and unlike charges attract.

• State and recognise that electrostatic phenomena are caused by the transfer of electrons.

• Describe static electricity in terms of the movement of electrons:a positive charge due to a lack (or loss) of electrons;a negative charge due to an excess (or gain) of electrons.

Van der Graaff time!!!

Plenary