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FORCES

MS MAHFUDZAH BINTI ZAINOL

Science year 6

Chapter 2By

t

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ALL ABOUT FORCES

Forces exist allaround us all thetime

Force act on allobjects, like thiscar.

Forces are needed tomake the car: Speed up

Slow down Change direction Stay on the ground

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WHAT IS FORCE?

A force is a push orpull

Lifting, stretching,

twisting, pressing

Cannot be seen. Itseffects can be seen and

felt

Has magnitude (value)and direction

Jeremy Ernst Animator Rigger - Push and

Pull Animation

http://gambar/Jeremy%20Ernst%20Animator%20Rigger%20-%20Push%20and%20Pull%20Animation.flvhttp://gambar/Jeremy%20Ernst%20Animator%20Rigger%20-%20Push%20and%20Pull%20Animation.flvhttp://gambar/Jeremy%20Ernst%20Animator%20Rigger%20-%20Push%20and%20Pull%20Animation.flvhttp://gambar/Jeremy%20Ernst%20Animator%20Rigger%20-%20Push%20and%20Pull%20Animation.flvhttp://gambar/Jeremy%20Ernst%20Animator%20Rigger%20-%20Push%20and%20Pull%20Animation.flvhttp://gambar/Jeremy%20Ernst%20Animator%20Rigger%20-%20Push%20and%20Pull%20Animation.flvhttp://gambar/Jeremy%20Ernst%20Animator%20Rigger%20-%20Push%20and%20Pull%20Animation.flv

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GRAVITY

Why do we stay on groundand not float off?

why do objects drop

straight down when welet go of them?

its all due to the forceof gravity

Click one of the smiley

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ALL ABOUT FORCES

There are many differenttypes of forces

Gravity is the forcethat pulls objects

towards the Earth.

GENTINGHIGHLAND

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GRAVITY

In this tightrope act, what happens ifthe performer falls?

Performer floats

Performer goes upwards

Performer drops to the ground

Now test your prediction by clicking the performer

to knock him off from the rope

Gravity pull the performerto the ground

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Friction

Friction is anotherforce that is all

around us

Friction occurswhenever twoobjects are in

contact with eachother

For example, there isfriction between

the shoes and thefloor surface

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Frictional force

It causes movingobjects to slow

down. It is aresistive force.

If theengine is turned off,friction slows the

train down until itstops.

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Friction

The amount offriction depends onthe roughness of

the surfaces incontact

There is morefriction if thesurfaces are

rougher. There isless friction if thesurfaces aresmoother

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Frictional force

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ALL ABOUT FORCES

Magnetic forces exist betweenmagnets and other magnets,and also between magnets

and magnetic materials. The

force can be attraction orrepulsion

Magnetic forces are

often very strong.

They can be used to lock

doors and gates.

N S N S

N S S N

Attracts

Repels

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Summary

Between any 2 objects there is a force of

Force is

Gravity is a force that

objects towards

the earth

attraction

Push or pull

pull

stretching magnetism

surface

Changecolor

push

twistingPlease click

nextWrong, tryagain

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Summary

Friction acts whenever two surfaces are in

Friction forces tend tomoving objects.

Smoother contact surfacesthe friction force

water contact trouble

Slow down Speed up

Blow up

reduce stopincrease

Wrong try againThats it..now

press next

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ALL ABOUT FORCES

WELL DONE

You have completed thismodule

Again

Back

- replay this whole module

-replay the last scene