Mind Map Upsr-complete[1]

8/4/2019 Mind Map Upsr-complete[1]

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Basic Needs

Of Human

food

shelter

air

water

To protect from

�

�

�

1.1 Understanding that humans have basic needs



Basic Needs

Of Animals

food

Shelter

air

water

To protect from

�

�

�

1.2 Understanding that animals have basic needs

Types :�

�

�

�



Plants Have Basic Needs

air Sun lightwater

With :

�

�

�

Without :

�

�

�

1.3 Understanding that plants have basic needs



2.1 Analysing life processes that humans undergo

Analysing Life Processes ThatHuman Undergo

± take in air

± give out air

Nose/Mouth Wind-pipe Lungs

A process to produce

Their young or offspring

Number of chest movement

In a period of time

Organs

- Sight

- Smell

- Taste

- Sound

- Touch

( Carbon dioxide

+ water vapour )

( urine + mineral salt )

( Sweat + mineral salt )

Faeces

Purpose :

�

�



2.2 Being aware that certain behaviour can disturb life processes

Behaviour That Can DisturbLife Processes

Effects

��

Effects

�

��

How to avoid



2.3 Analysing the life processes that animals undergo

Animals LifeP

rocesses

breathexcrete reproduce

Lay Eggs Give BirthOrgans

Monkey

� bird

� whale

� fish

� prawn

� crab � frog

� earthworm

� insects

defecate

To get rid of waste product

from their bodies



2.4

Life processesplants undergo

plants respond to stimuli.

water, sunlight, touch, gravity.

why plants need to reproduce

to ensure the survival of the species.

various ways plants reproducethrough«seeds, spores, suckers, stem cutting,leaves, underground stem.

what will happen to the world if

plants do not reproduce.

no food supply.

plants reproduce.

Seeds ± balsam, corn, durian

Spores ± fern, mushroomSuckers ± banana, pineapple

Stem cutting ± hibiscus, rose, tapiocaLeaves ± bryophyllum, begonia

Stem ± potato, onion, ginger and lily

the part of plant that responds

to touch.


to sunlight.

Shoot


to gravity.

Roots

the part of plant that respondsto water

Roots

Science Year 4

INVESTIGATING LIVING THINGS

2. Living Things Undergo Life Processes



Special characteristicsof animals that protect them

from danger.

special behaviour of animals that protect them

from danger.

The special characteristics andbehaviour of animals help to

protect them from danger.

3.1 animals have specific characteristics and

behaviour to protect themselves

Thick and hard skin

To prevent their enemies from injuring

Hard shell

Snails and tortoise retract their head

And legs into the shell when the are

Attacked by enemies

Hard scales

Pangolins and crocodiles have hard

scales To protect their bodiesfrom injuries

Spines

Raise the sharp spines when

the enemies

Advance towards them

Horns

Use their horn to attack enemies.

Sharp claws

To protect themselves and their

Young from the enemies- lion ,cat,

Bears, and eagle.

Spray black ink

Dark surrounding helps the animal not

to been seen by enemies

± e.g: octopus, squid

Poisonous sting or fangs

Can hurt and kill enemies-e.g..: scorpion,

centipede snake , bee.

Camouflage

Has body colour or patterns that that are

Similar to the surrounding

Pretend to dead

To trick their enemies ±e.g.: beetle



3.2/3.3

Animals have specific characteristics

and behaviour to protect themselves from

extreme weather and survive

how specific characteristics and

behavior of animals help to protect

them from very hot or cold weather.

specific characteristics and

behavior of animals that protect

them from very hot and cold weather.

Hot weather Cold weather

Wrinkled Skin

Elephant ,hippopotamuses and buffaloes

lose body heat through wrinkled skins

Wallowing

Elephant, hippopotamuses and buffaloes

keep their body cool by wallowing in

mud holes

Humps

Camels store food and water in the form

Of fats in the humps on their back.

Thick Fur

Polar bears have thick fur to prevent the body

From losing heat to cold surroundings.

Fat Layers Under The Skins

Penguins, seals, and whales have fat layers under

their skin to keep their bodies warm

Small Ears

Seals and Walruses have small ears to prevent

Heat loss from their bodies.

Hibernate

Polar bears hibernates during extreme cold

Weather



3.4 Plants have

specific characteristics to protect

themselves from enemy

The specific characteristics

of plants that protect them

from enemies

How the specific

characteristics of

plants help toprotect them

from enemies.

characteristics that

protect plants.

Have thorns

poisonousHave fine hairs

Produces

latex

Close leaflets

when touch



3.5 Plants have specific characteristics to

protect themselves from dry region and

strong wind

strong winddry region

Eg : cactus.

a. Long roots to absorb water

b. Succulent stem can store

water

c. Thorn can can prevent

the excessive loss of

water

Eg: Coconut tree, bamboo tree,

mangrove tree

a. Have stems that bend easily

b. Have buttress roots

c. Have separated leaves

d. Needle- shaped leaves



INVESTIGATING FORCE AND

ENERGY



Volume

MEASUREMENT1.1 Length

1.2 Area

1.5 Mass

1.6 Time1.7 Standard units

1.3 Solid

1.4 Liquid



1.1Length

Terminology

- The distance

between two

points/place/position

Ways to measure

Measuring tape

Cubit

Arm spanString

Ruler

Standard Tools

Measuring tape Ruler

Unit

mm cm m km

Correct technique

- The eye must be

directly above the

end of object



1.2 Area

- Area is the amount of

Space taken up by the

surface of an object.

Terminology

- Using square card with a

sides of 1 centimetre

Standard unit

- Square millimetre (mm2)

- Square centimetre (cm2)

- Square metre (m2)

- Square kilometre (km2)

- Using formula

Area = length X width

1cm

1cm

Different ways to measure area

2cm

4cm

= 4cm X 2 cm

= 8cm2

3cm

3cm

- by placing uniform

objects such as tiles,

books and stamps

on the surface of the objects



V olume

Terminology

The amount of space that

something takes up

1.3 Solid

1.4 Liquid

Formula

Length x width x height

Standard Units

mm3, cm3, m3

Tools

Standard Units

measuring

cylinder

ml, l Correct technique

a) taking the reading at the

lowest part of the meniscus.

b) eyes must be at the same level

as the lowest part of the meniscus



1.5 Mass

Terminology

- Amount of matter in

an object

Tools

Electronic

balance

Simple

balance

Beam

balance

Kitchen

scale

Bathroom

scale

Lever

balance

Standard unit

mg g kg

Correct technique



1.6 Time

Terminology

- Duration between

two event

Way to measure

- Sundial , sand clock ,

candle clock

Process that repeats uniformly

can be used to measure time

-Swinging pendulum

-Pulse rate candle

-water dripping

-Changing day and night

Tool

Standard unit

- Second , minute , hour

- Digital clock , watch ,

wrist watch , clock

Old clock

Events can be used measuring time



1.7 The Importance of Standard Units

- for accuracy and

consistency

- easy to communicate

and understanding



Investigating

Materials



1.1

The properties of materials

Insulator

Float on water

C onduct electricity

metal

conduct heatSink in water

Light to passthrough

Can be stretch

wood

stone rubber ring

glasscarbon plastics

metalwood



1.2

Applying knowledge

properties of materials in everyday life

Suggest ways

to keep things hot

Covered with insulators

Suggest ways

to keep things cold

hot thing cold thing

To prevent

heat loss

prevent from

absorbing heat



1.3

Uses of

materials based on their properties

List of object

and materials that they

are made of

object materials properties

spoon metal hard

tissue wood Soft

glasses glass transparent

Reason why particular

materials are used tomake an object

cheap

easy to get

strength

good quality



natural

materials

Man-made

materials

wood metal

rubber

cotton plastics synthetic cloth

glass

State that man-made materials

comes from natural materials

reducing reusing recycling

public transport plastic bag bottle plastics glass

1.4

The importance of

reuse, reduce and recycle of materials



RUSTING CAN PREVENTED

DIFFERENTW AYS TO

PREVENT OBJECTS FROM

RUSTING

Coating with non

rusting materials

*paint

*oil

*grease

THE NECESSARY TO

PREVENT RUSTING

*Everlasting Live

*Save Natural

material

*Save Cost

*Looking good

1.6

*Conclusion; Rusting can be avoided by preventing iron contact

with air and water.



UNDERSTANDING THAT SOME

MATERIALS CAN BE RUST

RUSTY OBJECTS NON RUSTY

OBJECTS

OBJECT MADE OF

IRON AND STEEL

OBJECT MADE OF

GLASS PLASTIC,

WOOD, CLAY AND SILK

*Nail

*Spoon

*Knife

*Needle

*Glass

*Bottle

*Cup

*Pencil



INVESTIGATING

THE EARTH

AND

THE UNIVERSE



1.1

The solar system

List of constituents

List of planets

Planets

move around

the Sun

-Nine Planets

-Natural satellites

-Meteors

-Comets-Asteroids

Mercury ± My

Venus ± Very

Earth ± Excellent

Mars ± Mother

Jupiter ± Just

Saturn ± Served

Uranus ± Us

Neptune ± Nine

Pluto ± Pudding

THE

SOLARSYSTEM



1.2 The relative size

and distance between

the Earth, the Moon

and the Sun

Size of the Sun

relative to the size

of the Earth.

Size of the Earth

relative to the size

of the Moon.

The relative distance from

the Earth to the Sun compared

to the relative distance from the

Earth to the Moon.

the Sun

1

the Earth

100

the Earth

1

the Moon

4

the Sun

the Earth the Moon

150 000 000 km 382 500 km

1 : 400





INVESTIGATING

TECHNOLOGY



1.1.Understanding the importance of technology in everyday life

Limitation of human abilityExamples of human limitations are

� Unable to see fine objects

�Unable to speak loud

�Unable to walk for long distance

�Unable to see far away objects

Devices to overcomehuman limitation

Microscope

- The usage of lens to see fine

features of objects and microbes

Microphone

-To increase the voice volume

Telephone

-To communicate from long distance

Bicycle, motorcycle, airplanes

-Can travel long distance

in a shorter time

Telescope, binocular

- To see far away objects





Problems they

encounter in their daily life

TECHNOLOGY

Ideas to solve

the problems identified

Device to solve

the problem identified.

Demonstrate that deviceinvented can be used to

solve the problem

identified

1.3

Synthesising

how technology

can be used to

solve problems

Cannot move and lift heavy thing

Cannot move farther

Sketch the model

Brain storming

lever

wheelbarrow

Pully ± can lift everything Wheel barrow ± can move heavything easily



1.4 Analysing That Technology Can Benefit Mankind If Used Wisely

Advantages of Technology Disadvantages of Technology

�Communication

Enable human to learn more about

things happening around the world

�Transportation

Enable human to travel

far away places in shorter time

�Agriculture

Machines make it easier to plants

and harvest their crops

�Construction

Roads, highways, bridges and

building is easier and faster to build

Environmental pollution from increase

In waste materials

Environmental destruction result from

excessive usage of natural resources

Social problem

Bad effects on health result from

environmental pollution and excessive

use of chemicals









1.1 Understanding that some microorganism are harmful and some are useful

Some Organisms Are Harmful And

Some Are Useful

Useful Harmful

Can cause

Illness Food

poisoning

Food

stale

Tooth

decay

Making bread/

tapai/tempe/fertilizer

Prevention

Disease

Stomach upsetMeasles/cough

Tooth decay

Conjunctivitis/mumps

Washing hand

Drink boiled water

Covering mouth &

nose when coughing& sneezing



2.1

Survival of Animal

Species

Examples animals that take

care of their eggs and young.

how animals take care of

Their eggs and young.

Why animals take care of

their eggs and young.

Bird - Eggs with shell covering

Frog - Eggs are thick, slimy and having bad smell Spider - kept in a bag underneath its body

Fish - keep their young in their mouths

Snake, Tiger - attack in order to protect their eggs

Turtle - hide their eggs

Kangaroo - carry their young in their pouches

Elephant - stay in herds

2.3

Importance

Shortage of food resource

Animals and plants species

may face extinction.

Bird, Frog, Spider, Fish, Snake,

turtle, Kangroo, Elephant

To ensure the survival

of their species



2.2

Survival of

Plant

Species

Water

Explosive

mechanism

Wind

Animal

� Light

� Air Space in the fruits

� Not water absorbent

� Light

� Small in size

� Winged

� Dry when ripe

� Explodes when mature

� Brightly coloured

� Edible

� Have smells

� Have hook

� Coconut

� Lily

� Shorea

� Angsana

� Lalang

� Rubber fruit

� Balsam fruit

� Chestnut

� Rambutan

� Mango

� Love grass

� Mimosa

Agents of dispersal Special characteristic Examples



3.1 Food Chain

Animals and the

food they eat

Classify animals into

herbivore, carnivore

and omnivore.

Producer Consumer Construct food chain

Green plant obtainenergy from

the sun to makefood. Green

Plant as a producer

Herbivore :Animals that eat plants only.

e.g.: cow, goat, deer

Carnivore:Animals that eat other animals.

e.g.: tiger, lion

Omnivore:Animals that eat plants and

other animals

Animals that eat plantor other animals

are called consumers.

The food relationshipamong living things

can be shown bya food chain.

To construct foodchain It must start

with plant as

a producer.

In a food chainthe arrow

means µeaten by¶

All living things needfood to survive.

Green plant can make their own food. However

animals cannotmake their own make

their own food.



3.2 Synthesizing food chain

to construct food web.

Food

web

What will happen

If there is a change in

population of a certain

species in a food web

Food

web of different

habitats

What will happen

to a certain species

of animals if they

eat only one type

of food

Paddy field

garden

A change in the population

of a certain species

will effect the Population

of other species

They will face difficulty

to survive ± if the

Source of food

runs out



1 Energy

2 Electricity

3 Light

4 Heat



INVESTIGATING FORCE AND ENERGY

ENERGY 1.1 The Uses of Energy

Why energy

is needed?

- by living things to carry

out life processes.Ex : moving, breathing,

growing

The Sources of Energy

Sun

- main source of energy

- produces light and heat

Food

- food contains

stored energy

Wind

- Moving air

- Used to pump

water, drive

small sawmills

- to move, boil, melt,

or bounce non-living things

FuelBatteries

- wood, coal,

petroleum,

natural gas

- device that

generated

electrical energy

from chemical energy

Water

- moving or

falling water

produceenergy





INVESTIGATING FORCE AND ENERGY

ENERGY

1.3 Renewable and

Non-renewable Energy

Renewable energy

Energy that

cannotbe replaced

Resources ±

solar, wind,

biomass fuel,water

Non-renewable energy

Energy that be

replenished whenit is used up

Resources ±

natural gas,

petroleum,

coal

Why use energy wiselyHow to use energy

Some energy

resources cannot

be replenished

when used upTo save

cost

Avoid

wastage

Reduce

pollution

Turn off the

television when

no one

watching it

Switch off the

lights before

going to leave

the room



Electricity Sources

Dry cell

Accumulator

Dynamo

Solar cell

Type of circuit

Name Symbol

Dry cell

Connecting

wire

Switch

Bulb

Symbol and componentParallel circuit Series circuit

Precautions

Differences

The bulb in the parallel circuit is brighter

then the bulb in the series circuit

Danger of mishandling

electrical appliances

Fire Burn

Electric shock

Electrocution

Safety

precautions to be

taken when using

appliances

Do not touch electricalappliances with wet hand

Do not repair electricalappliances on your own



Light

Can be reflected

How ?

Uses of reflection

Side mirror of a car

Periscope Kaleidoscope

Travel in a straight line

How shadow

is formed

When light is

completelyor partially

blocked by

an opaque

object

The light that

falls on objectsµbounces off¶

the objects and

comes to your

eyes

mirror

Shadow form

Opaque object

Light



Heat Gain

Loss Cooler

Warmer

How to measure temperature

using the correct technique

The effects of heaton matter

Matter expandswhen heated

Matter contractwhen cooled



Investigating

Materials

t ilk id



1.1 Matter exist in the form of solid, liquid or gas

solid liquid gas

has mass

Properties of solid Properties of liquid Properties of gas

fixed

volume

fixed shape

has mass

examples

water milk air

no permanent shape

fixed volume

stem

wood

stone

can't fixed

shape

has mass

Can't fixed

volume

can compressed



1.2

CHANGINGSTATES OF

WATER

gas - liquid

liquid - gas

liquid - gas

solid - liquid melting

Boiling

Affected by windy and hot

weather

evaporation

condensation

Freezing



1.31.3

Understanding the water cycle.Understanding the water cycle.

Circulation of water inCirculation of water in

the environment.the environment.

Formation of cloudsFormation of clouds

and rain.and rain.Importance of water.Importance of water.

Changes in the states of Changes in the states of

matter in the water cyclematter in the water cycle

Liquid to gas (evaporation)Liquid to gas (evaporation)Droplets of water willDroplets of water will

become bigger andbecome bigger and

heavier heavier rain

evaporation

condensation

sea

Gas liquid (Condensation)Gas liquid (Condensation)



1.41.4

Appreciating the importanceAppreciating the importance

of water resources.of water resources.

To prevent living aquatic from beingTo prevent living aquatic from being

destroyed and undergoing extinctiondestroyed and undergoing extinction

Reasons to keep our Reasons to keep our

water resources clean.water resources clean. To ensure the cleanlinessTo ensure the cleanliness

of water supplyof water supply

To regulateTo regulate

the formation of the formation of

clouds and rainclouds and rain

To avoid infectedTo avoid infected

diseasesdiseases

Ways to keep our water Ways to keep our water

resources cleanresources clean

Keep the rivers cleanKeep the rivers clean Cleanliness campaignCleanliness campaign



2.1 The properties of acid,2.1 The properties of acid,

alkaline and neutral substances.alkaline and neutral substances.

Identify the taste of acidicIdentify the taste of acidic

and alkaline food.and alkaline food.

Identify acidic, alkalineIdentify acidic, alkaline

and neutral substancesand neutral substances

using litmus paper.using litmus paper.

�� Conclude the properties of Conclude the properties of

acidic, alkaline and neutralacidic, alkaline and neutral

substances.substances.

Changes in colourChanges in colour

of litmus papersof litmus papers

blue to redblue to red red to bluered to blue

no changeno change

bitterbitter soursour

Properties of alkaliProperties of alkali

Properties of acidProperties of acid

Properties of Properties of

neutral substancesneutral substances Taste bitter & change Taste bitter & change

red litmus paper bluered litmus paper blue

Taste sour & change Taste sour & change

blue litmus paper redblue litmus paper red

Other tastesOther tastes ² ²

no changes in litmus paperno changes in litmus paper

acidacid alkalinealkaline

neutralneutral





Show

directions

Indicates

Seasons

A group of stars that form acertain pattern in the sky

Importance of

constellation

Identify

constellation

What constellation is

1.1 Understanding

the constellation

Constellation

Big dipper

Scorpion

Orion

Southern Cross

North

NorthSouth April ± June

Kite or Cross

Scorpion

Hunter

Water dipper

south

December - January

June - August

planting harvesting

desert

sea



2.1

The movements

of the Earth, the Moon

and the Sun

Earth rotates

on it axis

Earth rotates

and at the

same time

moves around

the sun

Moon rotates

on it axis

Moon rotates

and at the

same time

moves around

the Earth

The Moon and

the Earth move

round the Sun at

the same time

The earth

rotates on its axis

from west to east

The changes

in length and position

of the shadow

throughout the day

THE EARTH , THE MOON

AND THE SUN



2.2

The occurrence of day and night

It is day time for the part

of the Earth facing the Sun.

It is night time for

the part of the Earth facing

away from the Sun.

Day and night occur

due to the rotation of the Earth

on its axis.

the Sun the Earth

night night--timetime

daytimedaytime

axisaxis

west west east east



2.3 Phases Of The Moon

The Moon Does Not Emit Light

The Moon appear bright

when it reflect sunlight

Describe the phases

of the moon

1-New moon, 3- New half moon, 5- Full moon

7- Old half moon



INVESTIGATING

TECHNOLOGY









INVESTIGATING LIVING

THINGS

1 11 1



1.11.1

AnimalsAnimals

Somelive in solitary

(Animals that live by themselves)

SomeSomelive in groupslive in groups

(Animals that live together)(Animals that live together)

zebra giraffesgiraffesbees ants tigerlizardcatsnake

For safety

For Food To av oid competition f or f ood

To avoid competition for space

Cooperation is a

form of interaction



1.21.2Understanding that competition is a form of Understanding that competition is a form of

Interaction among living thingsInteraction among living things Animals

Plants

Factors for compete

Food

Water

Mate

Shelter

Space

Limited food resources

Limited water resources

Trying to get mate to breed

Defending or looking for shelter

Defending or looking for space

Factors for compete

Nutrient

Sunlight

Water

Space

Limited sunlight can reach them

Limited water resources

Limited space

Limited nutrient

Reason

Reason

Dodo birdDinosaur

Tiger RaflessiaPit h l t



1.3

Understanding the

responsibility of human beings

in protecting endangered species

Extinct animal Endangered animal

Endangered plant

Factors

of Extinction

ways to prevent

extinction

DinosaurAuk bird

Desert rat kangarooMammothQuagga

Tasmanian wolf

TurtleOrang UtanPandaRhinocerosHornbill

Blue Whale

Pitcher plant Venus fly trapWild orchid

Illegal HuntingElephant Tusk

Tiger Skin & Bone

Blue Whale Fat Giant Panda FurRhinoceros - Horn

Illegal LoggingHuman cut treesForest clearing

The destruction of habitat

Excessive developmentWater & air PollutionMany habitat has

destroyed

Extreme WeatherLong dry season

Flood

Forest fire

Campaign against

excessive LoggingEducate the public about

the importance of protecting& conserving animals & plant Avoid consuming or buying

products made fromendangered speciesEnforcing the law

ReplantingSelective logging

Setting up forest reservedSetting rehabilitation centreEncourage recycle , reuse

& reduce Campaign





1.Force 2.Movement

INVESTIGATING FORCEAND ENERGY









E lExample :



1.2 Food Preservation(Process whereby food turning

bad is slowed down)

DryingBoiling Cooling Vacuum

packing

Pickling

Freezing

Example :fish, prawn, fruits

Reason :

Bacteria and fungi cannot

grow without water

Example :Eggs, water

Reason :

Boiled will killed bacteriaand fungi

Example :eggs, vegetables, fruits

Reason :

Cold temperature slowdown the growth of bacteria and fungi

Example :Biscuits, crackers,

Reason :

Bacteria and fungicannot grow

without water

Reason :Prevents the growth

of bacteria andfungi

Example :

Fruits, chili, fish

Bottling/canning

PasteurisingSalting

Reason :

Bacteria and fungicannot active at a

very low temperature

Example :

Fish, meat

Reason :

Bacteria and fungicannot grow

without air

Example :

Meat, fish, fruits

Reason :

Destroymicrooganism

Example :

Milk, yogurt

Reason :

Bacteria and fungicannot grow in very

salt substances

Example :

Fish, eggs

Reason :

Dry the food

Example :

Fish, meat

Reason :Slow down theloss of water

Example :

Fruits

Smoking

Waxing



1.3 The Importance of

Preserving Food

Food can be kept

for a longer time

Easier to

store

Easier to

carry

To prevent the

wastage of food





� Animal extinction

� Habitats destruction

�Spoil natural beauty

�Change Climate

� Tin can

� Plastic

� Synthetic

� Glass� Metal objects

� Give out

poisonous gas

� Unpleasant

smell

� Return nutrient

to soil

� Prevent rubbish

from accumulate

�Paper

�Wood

� Food

� Meat

� Fungi

� Bacteria

2.2 Some Waste

Can Decay

Waste that decay

Waste that do not decay

Microbes that cause

waste to decay

Advantages of waste decaying

Disadvantages of waste decaying

What will happen if

waste do not decay



INVESTIGATING THE EARTH

& THE UNIVERSE



ECLIPSE OF THE MOON

The Earth is

between the Sun

and the Moon

The Earth, the Moon

and the Sun are

positioned in a

straight line

The Earth¶s position

blocks sunlight from

reaching the Moon.

The Earth¶s shadow

is formed on the

Moon surface and

cause an eclipse of the Moon

Sun Moon

Earth



ECLIPSE OF THE SUN

The Moon is

between the Sun

and the Earth

The Earth, the Moon and

the Sun are positioned in

a straight line

The Moon¶s blocks

the sunlight from

reaching the Earth

The Moon¶s shadow

is formed on the

Earth¶s surfaceSUN

Earth

Moon

The place that experienced full eclipse is completely dark during the day time

PHASES OF THE SUN DURING THE ECLIPSE



INVESTIGATING

TECHNOLOGY

A device that allows us to use



WHEEL AND AXLE

1.1. Simple machine

LEVER

WEDGE

PULLEY

GEAR

INCLINED PLANE

SCREW

-To carry or move heavy objects

- e.g. hammer , spoon , scissor

-To lift heavy objects easier

e.g. stairs , slanting wooden plank

-To carry to move heavy objects easily

e.g screw driver , car spanner

-To carry or lift objects to a higher place

-e.g flag pole , crane

-To cut or separate objects-E.g knife , saw , axe

-To fix two objects together

-E.g drill bit , spanner

-To move objects easily

-Gear in a watch

A device that allows us to use

less force to make work easier

or faster



1.2 Analysing a

complex

machine

Made up of more

than one simple

machine.Wheelbarrow

Lever, wheel and axle

CraneGear, pulley, lever

Egg Beater

Gear, wheel and axle

Bicycle

Gear, lever,

wheel and axle ScissorsLever, wedge

Hand DrillWedge, wheel and axle





Documents

Mind Map Upsr-complete[1]