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UPSR CLINIC 2008 (FASA 1) SCIENCE A. After attending this KLINIK UPSR 2009 (Fasa 1), the participants would be able to: 1 Prepaire themselves with the latest and best technics and strategy of learning science. 2 Identify the exact format and types of science questions. 3 Learn and understand science process skills thoroughly. 4 Apply Critical and Creative Thingking Skills (CCTS) while answering question. 5 Realise that science can be learedn step by step for easy understanding. 6 Connecting the learning of science through simple experiments. 7 To prepare oneself to achieve maximum marks using KLINIK UPSR (Fasa 2) as a guide. B. IDENTIFIYING OF SCIENCE UPSR PAPER SECTION TYPE OF QUESTIONS NUMBER OF QUESTIONS TOTAL MARKS PERCENTAGE (%) A Objective: 1. Multiple choice questions 2. Multiple combination questions 30 30 60 % B Subjective: 4 – 5 20 40 % TOTAL 50 100 The UPSR Science Questions - Analysis (2004 – 2008) Theme 2004 200 5 200 6 200 7 200 8 Living things 7 8 9 6 8 Force and Energy 9 5 9 7 6 Materials 5 9 6 9 6 The Earth and The 6 3 2 5 5

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Page 1: Bahan Klinik UPSR

UPSR CLINIC 2008 (FASA 1)SCIENCE

A. After attending this KLINIK UPSR 2009 (Fasa 1), the participants would be able to:

1 Prepaire themselves with the latest and best technics and strategy of learning science.

2 Identify the exact format and types of science questions.3 Learn and understand science process skills thoroughly.4 Apply Critical and Creative Thingking Skills (CCTS) while answering question.5 Realise that science can be learedn step by step for easy understanding.6 Connecting the learning of science through simple experiments.7 To prepare oneself to achieve maximum marks using KLINIK UPSR (Fasa 2) as a

guide.

B. IDENTIFIYING OF SCIENCE UPSR PAPER

SECTIONTYPE OF

QUESTIONSNUMBER OF QUESTIONS

TOTAL MARKS

PERCENTAGE (%)

A

Objective:1. Multiple choice

questions2. Multiple

combination questions

30 30 60 %

B Subjective: 4 – 5 20 40 %

TOTAL50 100

The UPSR Science Questions - Analysis (2004 – 2008)

Theme 2004 2005 2006 2007 2008Living things 7 8 9 6 8Force and Energy 9 5 9 7 6Materials 5 9 6 9 6The Earth and The Universe

6 3 2 5 5

Technology 3 5 4 3 5Total 30 30 30 30 30

Section a Science Questions - Analysis (2004-2008)

Type of Questions 2004 2005 2006 2007 2008Facts 2 2 4 4 5Terminology 2 1 2 2 2Sequencing 2 3 2 3 2Method 3 - 2 2 -Classification 2 2 2 1 2

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Principle / Concept 4 7 3 2 1Translation 4 - 2 3 1Interpretation 2 5 5 5 5Prediction 5 4 2 5 4Application 4 6 6 3 8Total 30 30 30 30 30

Distribution of Marks for UPSR Science PaperSection B Science Process Skills (2004 – 2008)

Science Process Skills 2004 2005 2006 2007 2008Inferencess 4 5 4 4 2Variable 4 4 2 6 6Hypothesis 1 1 4 3 3To Predict 3 4 2 2 3Analysis Data 8 6 8 5 6Application - - - -Total 20 20 20 20 20

C. EXAMPLES CCTS QUESTIONS

Section A

1) Classification (Creative Thinking Skills)

Diagram 1 shows three types of animals.Rajah 1 menunjukkan tiga jenis haiwan.

J K L M

Diagram 1Rajah 1

What is the breathing organ for these animals?Apakah organ pernafasan bagi haiwan-haiwan ini?

J K L M

A Moist skinKulit lembap

GillsInsang

Trachea systemSistem trakea

GillsInsang

BTrachea systemSistem trakea

LungsPeparu

Moist skinKulit lembap

Lungs and moist skin

Peparu dan kulit lembap

C Trachea systemSistem trakea

Moist skinKulit lembap

Lung booksPeparu buku

LungsPeparu

D Trachea system Lungs Moist skin Lungs and moist

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Sistem trakea Peparu Kulit lembapskin

Peparu dan Kulit lembap

2) Make Sequences:

(Critical Thinking Skills)

The following are a few planets.Berikut adalah beberapa planet.

Which of the following shows the arrangement in descending order, for the period of revolution of the planets around the Sun?Antara yang berikut, yang manakah susunan mengikut tertib menurun, bagi tempoh pusingan planet mengelilingi Matahari?

A P R Q SB S Q R PC S R P QD Q P R S

3) Prediction:(Creative Thinking Skills)

Time / minutesMasa / minit

0 5 10 15 20 25

Temperature / ºCSuhu / ºC

27 42 57 72 87 ?

Table 1Jadual 1

Table 1 shows the temperature against time for heating of water. Would the temperature be at 25 minutes?Jadual 1 menunjukkan suhu mengikut masa semasa pemanasan air. Apakah suhu pada minit ke-25?

A 92º CB 97º CC 100º CD 102º C

Section B:

1) Making Conclusion(Critical Thinking Skills)

P Mars Q Mercury R Saturn S NeptuneMarikh Musytari Zuhal Neptune

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When four tissue papers are moisted, their total weight is 200g. The tissue papers are put to dry and their weights are recorded every hour. The result of the investigation is recorded in the Table 2.Apabila empat helai kertas tisu dilembapkan, jumlah beratnya ialah 200g. Kertas tisu itu dibiarkan kering dan beratnya dicatatkan pada setiap jam. Keputusan penyiasatan itu dicatatkan dalam Jadual 2.

Table 2 Jadual 2

Questions:Soalan:

State one conclusion from this experiment.Nyatakan satu kesimpulan daripada penyiasatan ini.

___________________________________________________________________ [1mark][1 markah]

2 Making Inference:(Creative Thinking Skills)

Remaining number of animal X Bilangan haiwan XYang tinggal

100 80 60 40 20

0 Jan Feb Mac Apr May Month

Bulan

Diagram 2 Rajah 2

Diagram 2 shows a graph about the remaining number of animal X for five months.Jadual 2 menunjukkan sebuah graf tentang bilangan haiwan X yang tinggal untuk lima bulan.Question:

TimeMasa

Total weight of eight tissue papers / gJumlah berat lapan kertas tisu / g

1 hour1 jam

170

2 hours2 jam

150

3 hours3 jam

125

4 hours4 jam

100

Page 5: Bahan Klinik UPSR

State one inference about the number of animal X from January to May based on the information in the diagram.Nyatakan satu inferens tentang bilangan haiwan X dari bulan Januari ke Mei berdasarkan maklumat dalam rajah.

___________________________________________________________________ [1mark][1 markah]

3 Tabulating Data:(Creative Thinking Skills)

Diagram 3 shows object P, Q and R are of the same size, shape, and material. P, Q and R were blown with equal strength. It was found R toppled fisrt, followed by Q and P.Rajah 3 menunjukkan object P, Q dan R yang mempunyai saiz, bentuk dan bahan yang sama. P, Q dan R ditiup dengan kuatan yang sama. R didapati tumbang dahulu, diikuti Q dan P.

P Q R

Diagram 3 Rajah 3

What is the relationship between manipulatied variables (the things you changed) and responding variables (to measured)?Apakah hubungan antara perkara permboleh ubah dimanipulasi (yang diubah) dan pemboleh ubah bergerak balas (yang diperhati)?

___________________________________________________________________ [1mark][1 markah]

D. SCIENCE LEARNING STRATEGY

1. 3 Phases of Learning Science

How do I plan for a systematic and affective way of learning science?

3 PHASES OF

LEARNING SCIENCE

BEFOREPrepare earlier for the next topic

Pay attention Take down

notes Ask questions

Page 6: Bahan Klinik UPSR

2 Sequences for Experimentall Activities Observation

Inferences Prediction Controlling variables Experimenting Collecting Data Tabulating Data Making Conclusion

These skills will assess by the UPSR Science Practikal Work Assessment (UPSR PEKA)

UPSR PEKA is to enable the students to Master the Scientific Skills: - Science Process Skills (20 marks) - Science Manipulative Skills (30 marks)

4 Techniques of Making Notes during Science Revision

Guide line and steps in making note:

Types of notes Examples1) Collecting important point

- Energy

A WHILE

AFTER Assessment Enrichment Reflection

Sources of energy: - The wind- The sun- Food- Water- Batteries- Fuels

Forms of Energy:- Light energy- Solar energy- Heat energy- Sound energy- Potential energy- Kinetic energy- Chemical energy

Complete set of stationery Write down the topic

Read the specific notesIdentifiy keywords

Detect the main idea and concept

Simplify the main points

Using symbols / colours to differientiate main points

Rearrange the key words and their explanation according to your own choice of note

Page 7: Bahan Klinik UPSR

2) Mind / Concept map

3) Flow chart Pickling Process

Cut the fruit into pieces

Mix the fruit with salt

Wash and rinse the fruit

Put the fruit into concentrated sugar solution

Add some vinegar

Seal the bottle tightly

4) Diagram The correct way to measure the temperature of boiling water

Water takes the shape of its container

Basic Needs

Page 8: Bahan Klinik UPSR

5) TablePROPERTIES OF SOLIDS, LIQUIDS AND GASES

Properties Solid Liquid Gas

Has mass / / /Has a fixed volume / / XOccupies space / / /Has a fixed shape / X XCan be compressed X X /

6) Summary note 1) Shapes of objects in Structures- Buildings are built on shapes such as cone, sphere,

cuboid, cube, cylinder and pyramid- Most buildings are built by combining several

shapes2) The strength of a structure depends on:

- the types of materials used - the size of the structure - the shape of the structure

7) Neumonic The nine planets in the Solar

System with the nearest to the Sun

Mercury My Venus Very Earth Excellence Mars Mother Jupiter JustSaturn Serve Uranus Us Neptune NinePluto Pizza

THE IMPORTANT TOPICS FOR UPSR SCIENCE (YEAR 4, 5 AND 6)

A INVESTIGATING LIVING THINGS

Complete the boxes and statements with their details.

1 Basic Needs

Humans Animals PlantsShelter Shelter SunlightFood Food WaterWater Water AirAir Air

Year 4

SAMBALBIRU

MERAHAsid

Alkali

Page 9: Bahan Klinik UPSR

2 Life Process

HumansBreathing The lungsExcreation and Defecation

The lungs, skin, kidneys

Response The skin, eyes, nose, ears, tongueReproduction Giving birthBad habits Smoking, taking drugs, drinking alcohol

AnimalsBreathing The lungs, moist skin, trachea system, gillsExcreation and Defecation

The lungs, kidneys, skin, gills

Reproduction Giving birth, laying eggsLife cycles Mosquito, frog, butterfly

PlantsResponse To sunlight, water, gravityReproduction By seeds, spores, suckers, stem cuttings, leaves

3 Protection

Animal Protect Themselves by:

Danger and their enemies

Hard scales Tortoise, pangolin, crocodile, snailBad smell Skunk, bed bug Change colour Chameleon, arctic foxStrong thorns Buffaloo, Goat, cow Long legs and strong muscels

Horse, mouse deer,

Breaking off tail LizardMove in groups Wild bulls, wolvesProduce poison Cobra, bee, scorpionSharp spines Porcupine, Pretend to be dead Beetle, millipede

Extreme weather condition

(polar region)

Curl up body Milipede, pangolinHide in shell Snail, garden snailThick fur BearThick fat Seal, penguin

Extreme weather condition

(desert habitat)

Migrate Flamongo, swallow, swanHibernate Bear, mouse

Wallowing Buffaloo, hippopotamusHump Camel

Plants Protect Themselves

Danger and their enemies

Thick and hard bark Coconut tree, shorea treeFine hairs Pumpkin plant, bambooProduce latex Papaya tree, rubber tree, jackfruit Thorns Cactus, durian, pineapple, mimosaProduce poison Mushroom, yam plant

Extreme weather Drop leaves Rubber tree, bougainvilla

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condition(hot and dry

regeion)

Hairy leaves Watermelon plant, pumpkin plantWaxy leaves Pandan leaves, banana tree, hibiscusCurls up leaves Banana tree, lallang, maize plant

Extreme weather condition

(strong wind)

Divided leaves Coconut tree, nipah treeCan sway Needle-like leaves Casuarina, pines, conifersButtress roots Flame of the forest, mangrove plant

4 Microorganisms:- Microorganisms are classified as living things because they carry out life

processs such as breathing, growth and movement.- 4 main types of microorganisms.

Match the microorganisms with their details.

Microorganisms ShapeBacteria

Viruses

Fungi

Protozoa

- Useful Microorganisms : Making tapai, bread, tempe, fertilisers

- Harmful Microorganisms : Cause illnesses, food poisoning, food to turn bad, tooth decay

5 Survival of Species

Survival of Animals

Protecting the eggs or young

By keeping in the mouth Crocodile, guppiesBy carrying their young Kangaroo, scorpionBy staying in herds Buffaloo, elephants, buffaloBy laying slimy eggs Frog,By attacking their enemies Hen, tiger, catBy feeding their young Bird

Survival of PlantsDispersal of seeds

PlantsBy the wind Lallang, shorea, angsana, cottonBy water Coconut, nipah, lotus, pong-pongBy animals Rambutan, mango, durian, cillies, love grassBy explosive Sword bean, balsam, rubber, chesnut

Year 5

Page 11: Bahan Klinik UPSR

mechanism

6 Food Chains and Food Webs

Class or animals foodHerbivores Goat, cow, butterfly, grasshopper, mouse deer, caterpillarCarnivores Tiger, lion, mosquito, snake, eagle, frog, shark, wolf,Omnivores Bear, rat, chicken, duck, pig

7 Interaction among Living Things

Group animalsFor safety and foodEx : Lion, champanzie, buffalo, zebra, ants, bees, elephants

Solitary animalsTo avoid competition for food and spaceEx : Eagle, pangolin, snake,

Competition:- Among animals for : Space, foods, mate

- Among plants for: Sunlight, water, space

Protecting Endangered Species:

Animals that are extinct Ex : Dodo, dinasour, Tasmanian tiger, mammothEndangered animals Ex : Pangolin, tiger, hornbill, rhino, tapirEndangered plants Ex : mangrove, rafflesia, pitcher planFactors Human activities : Illegal or excessive logging, hunting,

developmentWays to prevent Campaign, educating the public, re-plant, enforcing law

B INVESTIGATING FORCE AND ENERGY

Complete the boxes and statements with their details.

1 Measurements:

LengthTools Ruler, measuring tapeUnits mm, cm, m, km

AreaFormula Length x widthUnits mm², cm², km²

VolumeCube, cuboid Length x width x heightLiquid By beakers, measuringUnits mm³, cm³, ml, l

MassTools Lever balance, electronic valanceUnits mg, g, kg

Time Tools Clock, stopwatch

Year 4

Year 6

Page 12: Bahan Klinik UPSR

Units Second, minute, hour, day, month

2 Energy

Sources of Energy (7) Forms of Energy (7)1 The wind 1 Light energy2 The sun 2 Heat energy3 The water 3 Kinetic energy4 The fuels 4 Potencial energy5 Batteries 5 Solar energy6 Food 6 Sound energy7 Coal 7 Chemical energy

- Renewable energy: Solar energy, wind energy, water energy, biomass fuel

- Non-renewable energy: Natural gas, petroleum, coal

3 Electricity

Sources of electricity: 1Dry cells__________ 2 Accumulator

3 Solar cells 4 Dynamo

Which are the series circuits and parallel circuits?

Parrallel Circuit Series circuit

4 Light

- Light travels in a straight line. The formation of shadow is

a phenomenon that shows light travels in a straight line when an opaque

object blocks a ray of light.

- When light travels in a straight line and strike the surface of an object, it will Reflected

5 Force

A force can cause:- Stationary objects to start moving- A change in the shape of an object- A change in the motion of an object

Year 5

Year 6

Page 13: Bahan Klinik UPSR

FrictionEffects - Make the surface warm, makes a moving object slow down

and stopFactors - Depends on the condition of surfaces and on the weight of an

objectAdvantages - Ex: Allow us to walk or run without slipping, vehicles to travel

on the road safely and enables us to hold things.Disadvantages- causes surfaces which are touching each other to wear out.Ways to reduce- Using rollers, ball bearings and using lubricants

6 Movement

- Speed shows how fast an object moves.- Objects that remain stationary do not have speed.- Formula: Speed = Distance

Time

C INVESTIGATING MATERIALS

Complete the boxes and statements with their details.

1 Properties of Materials:

Conduct electricity Nail, screw, thumbtack, copper wireConduct heat Metal spoon, paper clip, nail, needleAbsorb water Towel, cloth, tissue paper, paperFloat on water Cork, straw, wooden ruler, boatElastic Spring, rubber bandTransparent Glass, plain water, lensTranslucent Ice cube, tracing paper, Opaque Umbrella, roof wood,

Natural materils: Wood, metal, leather, soil, cotton, fur, rubber, silk, coal, clay

Man-made materials: Nylon,plastic, glass, synthetic rubber, synthetic cloth

2 Rusting of Materials:

Rusty objects Iron rod, Iron nail, drink can, zinc roof, needleNon-rusty objects Gold-ring, pencil, clay, glass, sink, plastic Factors which cause rusting Reaction of iron with oxygen and water

Ways to prevent rusting

PaintingCoating with oil or greaseElectropatingGalvanizing

Year 4

Year 5

Page 14: Bahan Klinik UPSR

3 Heat

- The Sun is our main source of heat. The temperature of an object is a measurement of its degree of hotness or coldness.

- Matter expands when heated and matter contract when cooled.

4 States of Matter

Properties Solid Liquid Gas

Has mass / / /Has a fixed volume / / XOccupies space / / /Has a fixed shape / X XCan be compressed X X /

ExamplesMarble, chalk,

wooden block, ice cube

Shampoo, glue, tomato sauce, water, oil, milk

Oxygen, nitrogen, hydrogen, air

Change of state of waterMelting Solid liquidBoiling Liquid gasEvaporation Liquid gas

Water vapor liquidFreezing Liquid solid

5 Acids and Alkalis

6 Food Preservation

- Food preservation is important because it makes food last longer and its kills bacteria and fungi.

Blue litmus paper

Red litmus paper

TasteExamples

AcidicTurn to red Unchanged Sour

Fizzy drink, vinegar, grapes, orange

AlkalineUnchanged

Turn to blue

BitterDetergent, shampoo,

baking powder, toothpaste

NeutralUnchanged Unchanged

Tasteless, sweet, salty

Sugar cane, common salt, mineral water, rice

Year 6

Page 15: Bahan Klinik UPSR

- Bacteria and fungi can easily grow in damp and warm conditions.- We can preserve food by killing the bacteria and fungi.

Preservation process ExamplesDrying Fish, prawns, cuttlefish, fruitsBoilingCooling Vegetables, fruits, eggs, cakeVacuum packing Nuts, crackers, powdered mikPickling Fruits, vegetables, chilliesFreezing Chicken, meat, prawns, cuttlefishCanning Meat, curry, red beansPasteuring Ice cream, juices, milk

7 Waste management

Ways of Disposing WasteProper Improper

Reuse or recycle LitteringBury waste that can decay in soil Open burningDispose of waste in the right place Release of waste into the riversTreat waste before disposing of into the darin Release of smoke into waste

D INVESTIGATING THE EARTH AND UNIVERSE

Complete the boxes and statements with their details.

1 The Earth and the Universe:

Match the objects for their details.

The Sun Rock or metal that orbit around the SunPlanets A star in the centre of the Solar System

Natural satellites Rock and metal which lie between the orbits of Mars and Jupiter

Comets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto

Meteors Ice and dust that orbit around the SunAsteroids The moon around the planets

2 Day and night

- The Earth rotates on its own axis from west to east.- Its cause the day and night to the Earth.- The earth also moving around the Sun

3 Constellations- A group of stars which form a certain shapes.

Year 4

Year 5

Page 16: Bahan Klinik UPSR

- Four main types of constellations are:_big dipper, orion, southern cross, scorpio

4 Phases of Moon

New Moon New crescent New half-Moon New gibbous Full Moon Old gibbous Old half-Moon Old crescent

5 Eclipse

Eclipse of the Sun Eclipse of the Moon

- Caused by the Moon revolving around the Earth. The Earth and Moon also revolve around the Sun.

- Also occurs because light travels in straight lines and light cannot pass through an opaque object.

E INVESTIGATING TECHNOLOGY

Complete the boxes and statements with their details.

1 Technology around us

Devices and Inventions ExamplesCommunication devices Telephone, satellite, cell phone, internetKitchen appliances Rice cooker, oven, electric kettle, Electronic games and toys Robot, control car, computer gameBuilding and structures Penang bridge, KLCC tower, condominiumDevices for performing calculations Calculator, computer,

2 Development of technology

Field of Example

CommunicationSmoke signal beating drum carrier pigeion telegraph telephone cell phone teleconferencing

Land transportationWalk riding animal bullock steam poer car petrol car

Water transportation Tree trunk canoe raft sailing ship cruiseAir transportation Hot air balloon airship glider aeroplene

Agriculture Sticks & animal bones hoe & rake plough tractorBuildings Cave hut wooden house concrete house

condominiumBridges Tree trunk wooden bridge concrete bridge concrete

& steel bridge

Year 6

Year 4

Page 17: Bahan Klinik UPSR

3 Strength and Stability

- Shapes of Objects

Pyramid hemisphere cylinder cube cuboid sphere cone

- The strength of an object depends on the types of material, the shape of the object and how the object is placed

- The srability of an object depends on base area and the height of an object

4 Machines

Simple Machines Examples Lever Bottle opener, claw hammer, see-saw, pliers, scissorsPulley Raising or lowering a flag, lifting a heavy objectWedge Axe, knife, saw, ice pick, needle, arrowScrew Drill bit, spanner, tapGear In bicycle, in a watchIncline plane The staircase, Wheel and axle Car spanner, screw driver, pencil sharpener

- A tool with more than one simple machine is called a __________________

SCIENCE TERMINOLOGIES

Excreation – is the process by which waste materials are dischgarged from the human body(Upsr 2003, 2004)

Defecation – is the process in which faeces is removed from the human bodyReproduction – is a process to produce offspringDrugs – are substances that can affect the functions of human’s bodyAlcohol – is a substance used to make alcoholic drinksArea – is the size of surface (Upsr 2004)Length – is the distance between two pointsVolume – is the amount of space taken up by the object (Upsr 2007)Mass – is the amount of matter in an objectTime – is the period between two momentsNatural Material- object originated from plant, animal and trock (Upsr 2007)Man-made Material object are obtained through chemical processes (Upsr 2001)Conductor – is a material that conducts electricity or heatInsulator – is a material that does not conduct electricity or heatTransparent - materials that allow most of the light to pass through them (Upsr 2001,

2005)Translucent - materials that scatter light and allow some light to pass through them

Year 5

Year 6

Year 4

Page 18: Bahan Klinik UPSR

Opaque - materials that do not allow any light to pass through themReusing - use waste materials again for purposes other than its original useRecycling - process waste materials to produce new ojectsNatural Satellites- are the natural objects which orbit around planetsAsteroids - are small pieces of rocks mixed with metals orbiting the SunComets - are small pieces of ice and dust that orbit round the SunMeteoroids - are small pieces of rock or metal floating in outer spaceMeterors - are meteroroids which enter the Earth’s atmosphereTechnology - the use of scientific knowledge in practical ways to design devices and

machines.

Bacteria - are a major group of living microorganismsViruses - are the tiniest of the microorganismsProtozoa - are the biggest microorganismsSurvival of species - the ability of a species to survive in this world (Upsr 2000)Dispersal - means scattering or distributing the seeds to other places for

GerminationCarnivore - animal only eat other animalsHerbivore - animal only eat plants (Upsr 2008)Omnivore - the animals eat bothh other animals and plantsFood chain - a relationship between living thingsFood Webs - a relationship between all the living things in a habitatRenewable energy- energy that can be replenished when used up (Upsr 2008)Non-renewable energy - that energy can’t be replenished when used upSeries Circuits- is a circuit in which the bulbs are arranged one after another in the

same pathParallel Circuits- is a curcuit in which the bulbs are arranged in two or more branchesMelting - is the process when a solid changes to a liquidCondensation - is the process when a water vapour changes to waterEvaporation - is the process when a liquid changes to gasConstellations - the arrangements of a group of stars with certain shapes or

imagesPhases of the Moon- are the different shapes of the Moon that can be seen from the Earth

Competition - occurs when two or more living things have the same needs that are limited

Preservation – to maintain the condition of habitats so that living things can live naturally (Upsr 2006)

Conservation - to care for something by improving it towards its original state to avoid extinction

Extinction - occurs when all the animals or plants of that species dieEndangered - animals or plants are facing the threat of becoming extinctFriction - is a force that opposes the movement of an objectFood preservation- makes food last longer by delaying it from becoming badMachines - are tools that help us to do most of our workSimple machines- is a device that allows us to use less force to make it easier and faster

for usComplex machines- is a tool with more than one simple machine to work

Year 5

Year 6