Collection of Science Question

7/31/2019 Collection of Science Question

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Name :. Class:

COLLECTION OF SCIENCE QUESTION

CHAPTER 1 : THE WORLD THROUGH OUR SENSES

1. Diagram 1 shows a defect of human eyes.

Diagram 1

Which of the following lenses can be used to correct this defect?

A C

B D

2. Diagram 2 shows a ray of light travelling from medium P tomedium Q.

Diagram 2

Which of the following could be medium P and Q?

ABCD

Medium P Medium QAir GlassAir Water

Water GlassGlass Water

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3. Diagram 3 shows cross section of a human ear.

Diagram 3

Which of the following shows the correct sequence of thepathway of sound wave into the ear?

A T P S R C P Q S R

B T S Q R D T S Q R

4. A student with normal vision wears the spectacles of his friendwith long-sight. His vision becomes blurred. Which of thefollowing shows the correct position of image in his eyes?

A C

B D

5. Which part of the plant shows positive hydrotropism?

A Root C StemB Leaf D Shoot

6. Which of the following shows the reflection of light?

A C

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B D

7. Diagram 4 shows the limitation of sight.

Diagram 4

This limitation of sight is called

A Blind spot C Stereoscopic visionB Optical illusion D Monocular vision

8. Diagram 5 shows a type of response in plant.

Diagram 5

The type of tropism shown by the plant is

A Phototropism C ThigmotropismB Hydrotropism D Nastic movement

9. The diagram 6 shows a cross-section of a human skin.

Diagram 6

Which are the parts labelled A, B, C or D is most sensitive topain?

10. Which of the following instruments can help human overcomehearing limitations and hearing defects?

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I Stethoscope III MicrophonesII Hearing aids IV Loudspeakers

A I and II only C I, II and III only

B III and IV only D I, II, III and IV

11. Diagram 7 shows the structure of human ear.

Diagram 7

Which of the labelled parts P, Q, R and S produces impulses tobe sent to the brain?

A P C RB Q D S

12. Diagram 8 shows a chart of human senses.

Diagram 8

R and S are used in

A Tasting the chicken curry C Watching a movie

B Selecting a good durian D Mother hugging a baby

4

PQ

R

S


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13. Diagram 9 shows two types of eye defects and their correction.

Diagram 9

What type of eye defects are represented by X and Y?

ABCD

X YShort-sightedness Long-sightedness

Astigmatism Long-sightednessLong-sightedness Short-sightednessShort-sightedness Astigmatism

14. Diagram 10 shows a cross section of a students eye.

Diagram 10

The student that has a normal sight is wearing a spectacleswhich is used by his father who suffers from long sightedness.

A P C RB Q D S

15 Diagram 11 shows an experiment to study the response ofseedling.

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Diagram 11

Why does radicle bend upward?

A It needs water to grow

B It needs sunlight to growC Radicle shows positive phototropismD Radicle shows negative hydrotropism

STRUCTURE:

1. Diagram 1.1 shows a cross section of the human ear.

Diagram 1.1

(a)

Label parts P, Q and R using the following words.

Inner ear Outer ear Middle ear

P :

Q :..

R:[3 marks]

(b)

Draw line to match each type of structure of ear with itsfunction.

6

Eardrum

Semicircularcanal

Eustachiantube

Pinna

Detect the position andmovement of the head to help

us keep our body balance

Collects and directs sounds into

the ear canal

Equalises the air pressure onboth sides of the eardrum,

preventing it from damage


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A Q secretes hydrochloric acidB Q receives bile from the liverC Enzymes in Q change starch to glucose

D Enzymes in Q change fat to fatty acid and glycerol

4. Table 2 shows the end products of digestion in the smallintestine.

Organ Class of food End product of digestion

Smallintestine

Carbohydrates JProteins K

Fats LTable 2

Which of the following represents J, K and L?

A

B

C

D

J K L

Amino acidsFatty acids and

glycerolGlucose

Fatty acids andglycerol

Amino acids Glucose

Fatty acid andglycerol

Glucose Amino acids

Glucose Amino acids

Fatty acids and

glycerol

5. The information shows a menu in Restaurant X.

A cup of coffee with sugar

Two slices of bread

Butter

Two half boiled eggs

This menu is not a balanced diet because it lacks in

A Iron C Vitamin CB Protein D Carbohydrates

6. Where does the reabsorption of water take place when foodpasses through alimentary canal?

A Mouth C Small intestineB Stomach D Large intestine

7. Table 3 shows the results of a food tests carried out on a foodsample.

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Food test ResultIodine test No change

Millons test No changeBenedicts test Brick-red precipitate

Table 3

Which of the following is present in the food sample test?

A Fat C GlucoseB Fibre D Protein

8. Diagram 2 shows two boys suffering from a disease due to lack

of certain nutrient.

Diagram 2

What is their lacking of?

A Fat C IodineB Iron D Protein

9. Diagram 3 shows organs in the human digestive system.

Diagram 3

The reabsorption of water from undigested food occurs in thepart which is labelled

A Q C SB R D T

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10.

Diagram 4 shows a digestive system in a human.

Diagram 4

Where is digestion of fats takes place?

A W C YB X D Z

STRUCTURE :

1. Diagram 1.1 shows a food pyramid.

Diagram 1.1

(a)

(i) State the class of food that is found in level Q.

[1 mark]

(ii)

Give one example of food for your answer in (i)

[1 mark]

(b) The diagram shows a food test carried out on a food sampletaken from level P.

P

Q

Mineral & Vitamin

Carbohydrate

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What can be observed when the mixture is shaken?

[1 mark]

(c) A boys diet lacks of vitamin A and vitamin C. State one

example of disease caused by the deficiency of eachvitamin.

(i) Vitamin A :

(ii)

Vitamin C :

[2 marks]

(d)

Table shows the calorific value for three classes of food.

Classes of food Energy value per gram (kJg-1)Carbohydrate 17

Protein 22Fat 39

Calculate the quantity of energy in a food that contains 10gof carbohydrates, 5g of protein and 2g of fat.

[1 mark]

2. Diagram 2.1 shows a part of human digestive system.

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Food sample + water + alcohol


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Diagram 2.1

(a

)

On diagram 2.1, label part P, Q and R using the following

words:

Gall bladder Liver Pancreas

[3 marks]

(b)

What is a function of organ Q?

[1 mark]

(c) Which of the organ that produces gastric juice?

[1 mark]

(d)

The pancreas produces enzymes. Name the enzymes.

[1 mark]

3. Diagram 3.1 shows the various types of food that consume daily.

Diagram 3.1

(a)

Name the main class of food found in the food samplesshown.

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[1 mark]

(b

)

Diagram 3.2 shows an experiment on the absorption of food.

Diagram 3.2

The experiment in diagram 3.2 is then carried out. After 30minutes, 2 cm3 of distilled water from the beaker is boiledwith Benedict solution. The result of the experiment is shownin the table 3.1 below.

Type of food indistilled water

Beginning ofexperiment

End of experiment

Starch Absent AbsentGlucose Absent Present

Table 3.1

(i) What is present in the distilled water at the end of theexperiment?

[1 mark]

(ii)

Give one reason for your answer in 3 (b)(i).

[1 mark]

(c) Diagram 3.3 shows part of the human digestive system.

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Diagram 3.3

(i) Label Z at the part of human digestive system in

diagram 3.3 that absorption of digested food take place.[1 mark]

(ii)

Complete the sequence of carbohydrate digestion in thehuman body.

[1 mark]

(d) Diagram 3.4 shows part of a human small intestine.

Diagram 3.4

(i) Name the parts label P.

[1 mark]

(ii)

Name two end product of digested food that absorbed inthe structure P.

[2 marks]

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CHAPTER 3 : BIODIVERSITY

1. The information below are true about organism Q.

Lives both on land and in water

Body temperature changes with the surroundingtemperature

Carries out external fertilization

Organism Q probably

A A tortoiseB An anteaterC A salamanderD A tapir

2. Diagram 1 shows two different animals.

Diagram 1

What is the similarity between the two animals?

A Furry

B Lay eggsC Have scalesD Warm blooded

3. Which of the following classification of animals is correct?

ABCD

Animals ClassDuck ReptileSnake AmphibianWhale Mammal

Crocodile Fish

4. The information shows a list of animals which of commoncharacteristics.

Snake

Bird

Whale

What are the common characteristics?

A Lay eggs

B Cold-bloodedC Have backbones

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D No backbones

5. The following information shows the characteristics of a plant.

Soft stem

Fibrous root system Parallel veins leaves

Which plants have these characteristics?

A BananaB PapayaC CoconutD Balsam

6. Diagram 2 shows a graph of body temperature versussurrounding temperature for an animal.

Diagram 2

Among the following, which is the animal?

A EelB BatC ToadD Monitor lizard

7. Which of the following groups of animals consists of invertebrate

only?

A Turtle, fish, snakeB Prawn, mosquito, lizardC Seahorse, beetle, butterflyD Prawn, cockroach, grasshopper

8. Diagram 3 shows examples of vertebrates.

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Diagram 3

Box X can best be represented by

A ToadB Penguin

C TurtleD Platypus

STRUCTURE:

1. (a)

Diagram 1.1 shows a cross section of dicotyledonous seed.

Diagram 1.1

(i) On diagram 1.1, label structure P, Q and R using thefollowing words:

Radical Cotyledon Plumule

[3 marks]

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(ii) State the function of cotyledon in Diagram 1.1.

[1 mark]

(b)

Diagram 1.2 shoes four plants.Mark () in the box below the plants reproduce using seeds.

Diagram 1.2[2 marks]

CHAPTER 4 : INTERDEPENDENCE AMONG LIVING ORGANISMS ANDENVIRONMENT

1. Which of the following shows mutualism interaction?

A C

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B D

2. Diagram 1 shows types of organisms in a paddy field.

Diagram 1

Which of the following food web is found in the habitat?

A

B

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C

D

3. Diagram 2 show a food web.

Diagram 2

Which organism has the biggest population?

A Organism P C Organism RB Organism Q D Organism S

4. Diagram 3 shows the components in an ecosystem.

Diagram 3

Which of the following represents P, Q, R and S?

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A

B

C

D

P Q R SNon-living

thingsLiving things Soil Plants

Living things

Non-living

things Plants Soil

Living thingsNon-living

thingsSoil Plants

Non-livingthings

Living things Plants Soil

5. Diagram 4 shows a food web.

Diagram 4

Which of the following pair of organisms are competitors for thesame type of food?

A U and R C T and RB U and S D Q and R

6. Diagram 5 shows an interaction between two organisms.

Diagram 5

Which of the following interaction is similar to the diagram?

A Algae and fungi C Parasites in human intestinesB Remora fish and sharks D Bacteria in termites

intestines

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7. Diagram 6 shows a pyramid of numbers

Diagram 6

Which of A, B, C and D represents secondary consumers?8. A group of organisms from the same species living in a

particular area is called

A Habitat C PopulationB Ecosystem D Community

9. Diagram 7 shows a food web

Diagram 7

What is the interaction between the bird, chicken and lizard?

A Parasitism C Prey-predatorB Competition D Commensalism

10. Diagram 8 shows a food web.

A

B

C

D

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Diagram 8

How many food chains are there in the above food web?

A 1 C 3B 2 D 4

11. Diagram 9 shows the relationship between a few components inthe living process of plants.

Diagram 9

Which of the following will not happen if the plants aredestroyed?

A The temperature of the earth increasesB The oxygen composition increases

C The amount of mineral salts increasesD The carbon dioxide composition increases

12. The remora fish lives by attaching itself under a shark andeating the scraps of food left by the shark. This interaction isknown as

A Mutualism C Prey-predatorB Competition D Commensalism

13. Diagram 10 shows a food chain.

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Diagram 10

What do P, Q, R and S represent?

A

B

C

D

P Q R S

Snake Frog Grasshopper Plants

Plants Grasshopper Frog Snake

Plants Frog Grasshopper Snake

Snake Grasshopper Frog Plants

14. Photosynthesis is a natural process. What is the importance ofphotosynthesis to the environment?

I Reduce formation of hazeII Increase oxygen in the atmosphereIII Reduces carbon dioxide in the atmosphere

A I and II only C II and III only

B I and III only D I, II and III

STRUCTURE :

1. Diagram 1.1 shows the steps in testing for the presence of starchin a green leaf.

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Diagram 1.1

(a)

(i) Arrange the steps in correct sequence by filling theboxes with the letter R, S, T and U.

[1 mark]

(ii) Draw line to match the steps with their purposes.

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[2 marks]

(b)

Diagram 1.2 shows a variegated leaf which has been in thesun for a few hours.

Diagram 1.2

(i) Label P on diagram 1.2 the part that will turn dark blueafter step R has been conducted.

[1 mark]

(ii) What conclusion can be made after the solution Q isadded onto the leaf.

[1 mark]

(c) State two importance of photosynthesis.

i

ii..[2 marks]

2. Diagram 2 shows two potted plants that was placed in the darkfor two days. The apparatus was then placed under the sun for afew hours. A leaf from each plant was then plucked and tested forstarch.

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Diagram 2

(a)

State the aim of the experiment in Diagram 2?

..[1 mark]

(b)

The two plants were placed in the dark for two days beforecarrying out the experiment. Why?

..[1 mark]

(c) What is the function of potassium hydroxide solution in belljar B?

..[1 mark]

(d)

Record your observation in Table 1 after the leaves weretested for the presence of starch.

Test for starch Colour of iodine

Leaf from bell jar A

Leaf from bell jar B

Table 1[2 marks]

(e)

Complete the word equation for photosynthesis

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[1 mark]

3. Diagram 3.1 shows the factors needed for photosynthesis.

Diagram 3.1

(a)

On diagram 3.1, label the factors necessary forphotosynthesis.

[3 marks]

(b)

Diagram 3.2 shows the apparatus set-up to investigate andidentify the gas given off during photosynthesis.

Diagram 3.2

(i) State one test to identify the gas collected in the test

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tube. State the observation for the test.

Test :.

Observation :

..[2 marks]

(ii) What is the purpose of the oil layer?

[1 mark]

CHAPTER 5 : WATER AND SOLUTION

1. Diagram 1 shows distillation of river water.

Diagram 1

The water undergoes process M in the condenser before it iscollected in the beaker.What is process M?

A Boiling C CondensationB Evaporation D Filtration

2. Diagram 2 shows a filter used by some villagers to filter riverwater.

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Diagram 2

What will still remain in the filtrate?

A Microorganism only

B Suspended solidC Microorganism and mineral saltsD Microorganism, mineral salts and suspended solid.

3. Diagram 3 shows the pH scale and the pH value of somesubstances.

Diagram 3

Which of the following represents P?

A Tomato C Lime waterB Toothpaste D Milk of Magnesia

4. Diagram 4 shows the electrolysis of acidified water.

Diagram 4

Which of the following shows the correct confirmation tests forgas X and Y?

A

BC

D

Gas X Gas YA glowing wooden splinter is

ignitedA pop sound is produced

with a lighted splinterLime water turns chalky Red litmus paper turns blue

A glowing wooden splinter isignited

Lime water turns chalky

A burning wooden splinter is

put out

A glowing wooden splinter is

ignited

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5. Diagram 5 shows how solution P, Q and R are prepared bydissolving 10 g, 5 g and 12 g of salt in 100cm3, 20cm3 and150cm3 water respectively.

Diagram 5

Arrange solution P, Q and R in ascending order of concentration,starting from the most dilute solution to the most concentratedsolution.

A R, P, Q C Q, P, RB R, Q, P D P, Q, R

6. Table 1 shows the pH values of material X, Y and Z.

Material pH valueX 5Y 7Z 8

Table 1

Which of the following represents material X, Y and Z?

ABCD

X Y Z

Vinegar Toothpaste Distilled waterToothpaste Vinegar Distilled waterVinegar Distilled water Toothpaste

Distilled water Vinegar Toothpaste

7. Diagram 6 shows an experiment on electrolysis of water

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Diagram 6

Gas X is

A Oxygen C Carbon dioxideB Hydrogen D Sulphur dioxide

8. Table 2 shows the functions of chemical Q, R and S. Thesechemicals are added in the process of water purification.

Chemical FunctionQ Kills the bacteria in waterR Prevents tooth decayS Makes the suspended particles to settle to the

bottomTable 2

Which of the following is true about chemicals Q, R and S?

ABCD

Q R SFluoride Chlorine AlumFluoride Alum ChlorineChlorine Alum FluorideChlorine Fluoride Alum

9. Diagram 7 shows the process of electrolysis of water.

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Diagram 7

Which of the following occurs when the switch is turned on?

A Oxygen is collected at electrode YB Hydrogen is collected at electrode XC No gas is released at both electrode X and YD Hydrogen is collected at the negative electrode and oxygen is

collected at the positive electrode

10. Diagram 8 shows two wet towels of the same size, P and Q hungon a cloths line.

Diagram 8

P dries up faster than Q. What is the factor that causes P to dry

faster?

A Surface area C Surrounding humidityB Movement of air D Surrounding temperature

11. The information below shows three characteristics of one waterpurification method.

Kills microorganisms

Does not get rid of impurities

Sometimes endangers health

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This method is most probably

A Boiling C DistillationB Filtration D Chlorination

12. Diagram 8 shows the process of electrolysis of water.

Diagram 8

When the switch is on, gas J and K are collected in the test tuberespectively. If 4 cm3 of gas K is collected in the test tube, whatwould be the volume of gas J?

A 2 cm3 C 6 cm3

B 4 cm3 D 8 cm3

13. Diagram 9 shows a pH values of substances S.

Diagram 9

Which of the following may be substances S?

A Orange juice C Lime waterB Distilled water D Hot coffee

14. Diagram 10 shows a method used to purify water.

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Diagram 10

What is the characteristic of distillate formed in the beaker?

A Salty C Contains microorganismB Suitable for drinking D Has a boiling point of 100C

STRUCTURE :

1. A student mixes salt into two beakers containing cold water andhot water. The student realizes that the salt dissolves faster inhot water.

Diagram 1.1 Diagram 1.2

(a)

Based on the observation in Diagram 1.1 and 1.2, state thedifference in the time taken for the salt to dissolve.

[1 mark]

(b

)

What inference can be made based on Diagram 1.1 and 1.2?

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[1 mark]

(c) State your hypothesis based on your observation in Diagram1.1 and 1.2.

[1mark]

(d)

(i) A student carried out an experiment to investigate thesituations in Diagram 1.1 and 1.2. The experiment wascarried out at different temperatures. Write thetemperature for the 4th experiment in the space.

Diagram 1.3[1 mark]

(ii) Using Diagram 1.3, draw a graph of the time taken forthe salt to dissolve against the temperature of water.

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[2 marks]

(iii) State the relationship between the temperature ofwater and the time taken for the salt to dissolve.

[1 mark]

(iv) State the variables involved in this experiment.

Manipulated variable :.

[1 mark]

(v) Based on your graph in (b)(ii), deduce the time takenfor the salt to dissolve when the temperature of the

water is 70C.

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[1 mark]

(vi) Based on Diagram 1.3, state the operational definitionfor the rate of dissolving.

[1 mark]

2. Diagram 2 shows the result of an experiment to determine thecomposition of water. In this experiment, water is broken down toits elements using electricity.

Diagram 2

(a)

What is the name of the process shown in Diagram 2?

.[1 mark]

(b)

Which carbon rod functions as negative electrode?

.[1 mark]

(c) When the circuit is closed, gases is collected in each testtube. What is the gas collected in test tube Q?

.[1 mark]

(d)

State how to identify the gas collected in test tube Q?

.

[1 mark]

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(e)

If the gas collected in test tube P is 10cm3, calculate thevolume of gas collected in test tube Q.

[2 marks]

(f) State one uses of gas collected in test tube P.

.[1 mark]

3. (a)

The diagram 3.1 below shows some wet clothes hung on aline under different conditions.

Diagram 3.1

(i) Based on your observations in the Diagram 3.1, state

the difference in the time taken for the clothes to dry inCondition A and Condition B.

[1 mark]

(ii) What inference can be made based on Condition A andCondition B in the diagram above?

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[1 mark]

(iii) State one hypothesis based on your observations in thediagram above.

[1 mark]

(b)

A student carried out an experiment to investigate ConditionA and Condition B. The diagram 3.2 shows an experiment todetermine how the temperature of the surrounding affectsthe rate of evaporation.

Diagram 3.2

Based on the Diagram 3.2, record the time taken for the dropof water on the cobalt chloride paper to dry in the tablebelow.

ConditionTime taken for drop of wateron the cobalt chloride paper

to dry (min)

With heat source

Without heat source

[2 marks]

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(c) Based on the readings in the table above, draw a bar chart toshow the time taken for the drop of water on the cobaltchloride paper to dry in different conditions.

[2 marks]

(d)

Based on the bar chart in (c), what can be said about thetime taken for the drop of water on the cobalt chloride paper

to dry?

....

.[1 mark]

(e)

Based on the experiment, state the relationship between thetemperature of the surrounding and the rate of evaporation.

.

.[1 mark]

(f) State the variables involved in this experiment.

Manipulated variable :..

Responding variable :

Fixed variable :

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[3 marks]

4. Diagram 4.1 shows four substances P, Q, R and S.

Diagram 4.1

All the substances can be classified based on their reaction to thelitmus paper.

(a)

Based on diagram 4.1, state the colour change of the foursubstances when tested with blue litmus paper.

P :

Q :..

R :

S :[4 marks]

(b)

Classify P, Q, R and S into two groups based on theirreaction to the litmus paper.

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[4 marks]

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CHAPTER 6 : AIR PRESSURE

1. Diagram 1 shows the balloon will expands when water is pumpedinto the bottle.

Diagram 1

What conclusion can you make from this activity?

A Size of air particles in the balloon increaseB The air particles collide more frequently in the balloonC The air particles will compress to enter the balloonD The air pressure in the bottle will decrease

2. Diagram 2 shows evaporated milk flowing out from a tin.

Diagram 2

Milk can flow out from the tin because

A Air pressure in the tin increasesB Air pressure in the tin decreasesC Milk mixes with the air in the tinD Air pressure in the tin is the same as the atmospheric

pressure

3. Which of the following statement describes the condition of airmolecules in a tyre being inflated?

A The rate of collision between the air molecules in the tyre

increases.B The distance between the air molecules in the tyre increases.

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C The size of air molecules in the tyre decreases.D The mass of air molecules in the tyre decreases.

4. Diagram 3 shows a rubber plunger which is being used to removea blockage in a sink-pipe.

Diagram 3

Which of the following is true?

A Air pressure in P is lower than in Q.B Air pressure in Q is lower than in P.C Air pressure in P equal to air pressure in Q.D Atmospheric pressure is higher than air pressure in P and Q.

5. Which of the following statements explain the kinetic theory of

gases?

A Movement of gas particles follows a specific pattern.B Air pressure is caused by movement of air particles.C Collision of the gas particles with the wall of container exerts

pressure.D The number of air particles increases when the temperature

increases.

6. Diagram 4 shows a U-tube.

Diagram 4

When the piston is pulled upward, the level of water at P moves

up. Why?

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A The air pressure at X is the same as the air pressure at YB The air pressure at Z is the same as the air pressure at XC The air pressure at X is higher than the air pressure at YD The air pressure at Z is higher than the air pressure at Y

7. Condensed milk can be poured more easily from the milk tin if thetin has two punctured holes as shown in diagram 5.

Diagram 5

This is because the

A Air can go into the milk tinB Air can dilute the condensed milk

C Outside air enter the milk tin and pushes out the milkD Air pressure outside the milk tin is lower than air pressureinside the milk tin

8. Diagram 6 shows a suction pump is used to remove the dirt thatblocks a sink pipe.

Diagram 6

Which of the following comparison of air pressure in areas K and Lis true?

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A

B

C

D

K L

Low Low

Low High

High High

High Low

CHAPTER 7 : DYNAMICS

1. Diagram 1 shows an iron nail attracted to X.

Diagram 1

What forces cause this?

A Magnetic force C Electrostatic forceB Frictional force D Gravitational force

2. Diagram 2 shows a student pushing a box through a distance of3.0 m with a force of 60 N.

Diagram 2

Find the work done by him.

A 20 J C 120 JB 63 J D 180 J

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3. The magnitude of the frictional force acting on an object movingon a flat surface depends on

I The weight of the object

II Size of the base area of the objectIII The type of surface it comes in contact with

A I and II C II and IIIB I and III D I, II and III

4. A box weighing 800 N is lifted to a vertical height of 2.0 m. Howmuch work is done in lifting the box?

A 16 J C 1600 JB 400 Nm D 1600 N

5. Diagram 3 shows two women with body masses of 45 kg and 55kg respectively in a lift.

Diagram 3

In the lift moves through a distance of 30 m in 1 minute, calculatethe power of the lift.[1 Kg = 10 N]

A 50 W C 500 W

B 100 W D 3000 W

6. Below is the information about friction.

A layer of air that exists between the two surfaces helps toreduce friction

Which of the following uses the principle mentioned above?

I Air pack III Ball bearings

II Hovercraft

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A I, II and III C II and III onlyB I and II only D I only

7. Diagram 4 shows that the length of the spring is 10 cm before itis being pulled. When the spring is pulled, its length becomes 22

cm.

Diagram 4

If the work done is 30 J, how much force is acting on the spring?

A 150 N C 250 NB 200 N D 275 N

8. In which of the following surfaces will the frictional force begreatest?

A A wet surfaceB A surface with oil on itC A smooth polished surfaceD A surface with sandpaper on it

9. Diagram 5 shows a student with a body weight of 400 N runningup stairs.

Diagram 5

If the power generated is 150 W, what is the time taken by theboy to reach the top of the stairs?

A 5.6 second C 8.0 second

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B 7.8 second D 8.8 second

STRUCTURE :

1. Diagram 1.1 shows three situations A, B and C.

Diagram 1.1

(a)

Based on Diagram 1.1, state the situation where

(i) work is done

[1 mark]

(ii) no work is done

[1 mark]

(iii) Give one reason for the answer in 3(a)(ii).

.[1 mark]

(b)

Diagram 1.2 shows a student dragging his luggage through adistance of 3.0 m with a force of 60 N.

Diagram 1.2

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(i) Is the student considered doing work? Explain

.[2 marks]

(ii) Write the formula for work

[1 mark]

(iii) Calculate the work done by the student.

[2 marks]

2. (a)

Diagram 2.1 shows workers pulling boxes of 40 kg each ondifferent surfaces

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Diagram 2.1

(i) State the frictional force in any three situation of P, Q,R and S.

P :

Q :..

R :..

S:.[3 marks]

(ii) State the differences in frictional force that exists insituation R and situation S.

.

[1 mark]

(iii) State one inference based on above situation.

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.

[1 mark]

(iv) State the relationship between the mass and thefrictional force.

.

.[1 mark]

(b)

Classify P, Q, R and S into two groups based on theirfrictional force.

CHAPTER 8 : SUPPORT AND MOVEMENT

1. Diagram 1 shows two types of animals with a different supportsystem.

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P QDiagram 1

Which of the following shows the correct support system ofanimals P and Q?

A

BCD

P QHydrostatic Exoskeleton

Exoskeleton EndoskeletonExoskeleton Hydrostatic

Endoskeleton hydrostatic

2. Diagram 2 shows three animal R, S and T.

Diagram 2

What are the support systems for R, S and T?

A

B

C

D

R S THydrostatic

skeletonEndoskeleton Exoskeleton

Endoskeleton ExoskeletonHydrostatic

skeleton

Exoskeleton EndoskeletonHydrostatic

skeleton

ExoskeletonHydrostatic

skeletonEndoskeleton

3. Diagram 3 shows the support system in plants.

Diagram 3

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Which of the following is true about the support system in plant Pand plant Q?

A Both plants have soft stem.

B Both plants are supported by tendrils.C Both plants have woody plants.D Plant P grows in lower regions while plant Q grows in higher

regions.

4. An earthworm maintains its body shape because its body fluidexerts pressure outwards. This support system is called

A Water upthrust C EndoskeletonB Exoskeleton D Hydrostatic skeleton

5. Diagram 4 shows a pumpkin plant.

Diagram 4

Which of the following has the same support system withpumpkin plant?

A Roses C Cucumber plantB Orchid D Money plant

6. Diagram 5 shows a type of plant.

Diagram 5

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How does the plant get its support?

A Woody stem C Buttress rootB Turgidity of cells D Prop roots

STRUCTURE :

1. Diagram 1 shows four types of plants.

Diagram 1

Observe the plants in Diagram 1. Based on the observation,

(a)

State the type of support system for each of the plants.

P : ..

Q :

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R :

S :

[4 marks]

(b)

Classify the plants in Diagram 1 into two groups based oncommon characteristics.

[4 marks]

CHAPTER 9 : STABILITY

1. Diagram 1 shows 3 models P, Q and R with same base areaplaced on a piece of wood.

Diagram 1

Arrange the models given in ascending order according to thetime taken for the models to topple when the wood is tilted.

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A P, Q, R C Q, R, PB P, R, Q D Q, P, R

2. The tools below are designed based on a certain principle of

stability. Bunsen burner

Tripod stand

Retort stand

Which of the following use the same principle of stability as theabove tool?

A Babys milk bottle is filled with waterB The engine is placed at the bottom of a van

C The passengers in a boat is advised to sit downD A childs bicycle is equipped with additional back wheels

3. Diagram 2 shows a lorry packed with goods.

Diagram 2

Which of the following steps helps to increase the stability of thelorry?

A Load the heavier goods first with the lighter goods on top.B Load the lighter goods first with the heavier goods on top.C Load the lighter goods in the front part of the lorry with the

heavier goods at the back.

D Load the heavier goods in the front part of the lorry with thelighter goods at the back.

4. Which of the following device is designed to increase the stabilityof a healthy elderly while walking?

A C

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Diagram 1.1

(a)

(i) Which ladder is more stable?

.[1 mark]

(ii)

Give one reason for the answer in 1(a)(i).

.[1 mark]

(b

)

State two factors that affect stability of the ladders.

1).

2).[2 marks]

(c) Diagram 1.2 shows three vehicles.

Diagram 1.2

(i) Which vehicle in Diagram 1.2 is the least stable?

.[1 mark]

(ii) Why a racing car is more stable than a sedan car?

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.

.[1 mark]

CHAPTER 10 : SIMPLE MACHINE

1.

Diagram 1 shows a wooden plank in horizontal position.

Diagram 1

Calculate the value of J to keep the lever in equilibrium.

A 5.0 N C 50.0 NB 17.5 N D 175.0 N

2.

Diagram 2 shows a weight hanging at position P and is balancedby a spring balance on a lever.

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Diagram 2

If the weight is shifted to position R, what force should be exertedon the spring balance in order to keep the lever in equilibrium?

A 0.5 N C 4.0 NB 1.0 N D 8.0 N

3.

Diagram 3 shows a balanced level system. Azmi with a mass of 50kg sits at position S and Ali sits at position R.

Diagram 3

What is the weight of Ali?

A 500 NB 700 NC 750 ND 850 N

4.

Diagram 4 shows a type of lever.

Diagram 4

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Which of the following devices can be classified in the same classas the lever in Diagram 4?

A C

B D

5.

Diagram 5 shows a lever system in a balanced position.

Diagram 5

Which of the following statements below is correctly describingthe system?

A X is as heavy asYB X is lighter thanYC X is lighter than the rodeD X is heavier thanY

6.

Diagram 6 shows three devices with different levers.

Diagram 6

All above levers are classified based on

A The uses of the leverB The material of the leverC The position of effort, fulcrum and loadD The distance between effort, fulcrum and load

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Diagram 1.2[1 mark]

(d)

Diagram 1.3 shows a lever that is in equilibrium.

Diagram 1.3

Calculate the force, W needed to balance the metre rulerusing the following formula:

Load x distance of load = force x distance offorce

from the fulcrum from thefulcrum

[2 marks]

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