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M INVESTIGATING FORCE AND ENERGYA M 0

1 ENERGY1.1 UNDERSTANDING THE USES OF ENERGY


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14

C)(A) Tick (,/) the correct answer,

(X )the wrong answer.

1. Energy can be destroyed.

2. Energy can be converted into other forms.

1.The Sun gives out solar energy.

2.We get fuel from dead plants and animals.

3. Wind produces kinetic energy.

in(B) Circle the correct answer.

Which of the following is not correct about the above figure?

A. I t gives us heat. C. It helps plants to make food.

B. It is the biggest planet. D. It is our main source of energy.

2. Which of the following sources get their energy from the Sun?

I. Biomass

11. Chemical

III. Wind

A. I and II only. C. II and III only.

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


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14 0& INVESTIGATING FORCE AND ENERGY[ ~ l E N E R G Y

1.1 UNDERSTANDING UNDERSTANDING THE USES OF ENERGY(B) Circle the correct answer.

3.

Dry cells are used in the above objec t. The energy stored in the d ry cells is .............................................

A. kinetic energy. C. solar energy.

B. chemical energy. D. nuclear energy.

4. Which of the following have chemical energy?

I. FireII. Petrol

III. Dry cell

I. Rice

A. I and II only. C. II and IV only.

B. I and III only. D. II, 111 and IV only.

5. A stretched spr ing has........................................................ energy.

A. kinetic C. electrical

B. potential D. chemical

6.


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15r 19 1 ENERGY

1.2 UNDERSTANDING THAT ENERGY CAN BE TRANSFORMED FROM ONE FORM TO

ANOTHER

(A) Shown below are devices which make use of energy to makethem work. Name the source of energy for each of the devices.

(1)

(4)


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(2)

(5)

r

(3)



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1 ENERGY1.2 UNDERSTANDING THAT ENERGY CAN BE TRANSFORMED FROM

ONE FORM TO ANOTHER

151. Which of the following produces biomass fuel?

I. Coal

11. Natural gas

III. Green plants

III. Petroleum

A. I and 11 only. C. II and Ill only.

B. I and III only. D. I, 11, and IV only.

2.

What type of energy is produced by the above device?

(B) Circle the correct answer.-AuA. Kinetic energy. C. Biomass energy.

3.


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B. heat energy to electrical energy. D. electrical energy to heat energy.

IPA

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1 ENERGY

1.2 UNDERSTANDING THAT ENERGY CAN BE TRANSFORMED FROM ONE FORM TO ANOTHER

16(A ) C i rc le the co r rec t answer .

1. Which of the following electrical appliances change electrical energy to heat energy?

A. I and 11 only C. I, 11 and Ill only

B. I and III only D. I, Ill and IV

2. The table below shows the energy changes when the appliances are used.

Which one is correctly paired?

Energy converter Transformation of energy

Solar panel Heat energy > chemical energy

Electric kettle Electrical energy --> heat energy

Lamp Heat energy electrical energy

Water heater Light energy Heat energy

2. What takes place when we turn on the radio?A. Heat energy is changed to electr ic energy. C. Electrical energy is changed to heat energy.

B. Electri cal energy i s changed to sound energy. D. Chemical energy is changed to heat energy.

A

B

C A. I and 11 only. C. 1, 11 and Ill only.


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B. I and Ill only. D. I, II, Ill and IV.



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1 ENERGY

1.2 UNDERSTANDING THAT ENERGY CAN BE TRANSFORMED FROM ONE FORM TO

ANOTHER

16

0 (B) Answer the following questions.

Write down the energy changed from one to another when using these appliances.

1. Iron

1. Table fan

1. Microphone

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1 ENERGY

1.3 UNDERSTANDING RENEWABLE AND NON-RENEWABLE ENERGY

17(A) Ci rc le the corre ct answer .

1. Renewable energy resources are ........................................A. those that cannot be replenished. C. those that can be replenished.

A. those found in the soil . D. those that can be stored.

2. Energy stored in a dry cell of a torch light becomes .........................................

A. chemical energy when turns on. C. heat energy when turns on.

A. sound energy when turns on. D. light energy when turns on.

3. Which of following is a non-renewable resource of energy?

A. Biomass. C. Fuel.

A. Water. D. Waves.

4. Which of the following energy can be renewed?

A. Natural gas. C. Fuel.

A. Coal. D. Solar.

5. Geothermal is a renewable energy because.................................................

A. it is hot. C. it can be converted.

A. Alarm. C. Windmill.


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A. Car. D. Gas tank.

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17 1 ENERGY1.3 UNDERSTANDING RENEWABLE AND NON-RENEWABLE ENERGY

(B) The f igure be low shows a windmi l l .

1. State the source of energy produce by the windmill.

1. In the process of producing electricity, state the energy conversion that took place.

1. What is the advantage of using this source of energy?



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18

rI

1 ENERGY

1.3 UNDERSTANDING RENEWABLE AND NON-RENEWABLEENERGY

0 (A) Fill in the blanks with the correct words from the box below.

hydroelectricity Wind Natural gas nuclear Recycling______I1. material can help to conserve energy.

2. Electricity that is generated from water sources is called.................................

3. ........................................ produces kinetic energy.

4. Uranium and plutonium can be used to produce....................................... energy.

5. ........................................ and coal are non - renewable energies.

(B) Name the type of energies used by the machines shown below._j


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(1)

(2)

(3)

( 9 ) P E N E R B I T S E R I S A N J U N G S D N . B H D . ( 5 7 4 0 1 8 - T )


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1 ENERGY

1.3 UNDERSTANDING RENEWABLE AND NON-RENEWABLE ENERGY

181. State two sources of energy that are not renewable. A. B.

1. State reasons to conserve energy. A. B.

1. State two ways to reduce energy usage. A. B.

0 (D) Circle the correct answer

IElectrical energy --> heat energy_____________IWhich of the following appliances go through the energy conversion as shown above?

I. Rice cooker

II. Iron

111. Torch

IV. Television

A. I and II only. C. II and IV only.A. I and III only. D. I, II, 111 and IV.

2. * Moving air

* Moving water

What type of energy is produced by the above?

A. Renewable energy.

-

A. Solarenergy.

(C) Answer these questions.


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Ar_

(A) Name the following electricity sources


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(A) Name the following electricity sources.

(1)

2 ELECTRICITY

2.1 KNOWING THE SOURCES OF ELECTRICITY

19


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19@ ) P E N E R B I T S E R I S A N J U N G S D N . B H D . ( 5 7 4 0 1 8 - T )


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19r ' I

2 ELECTRICITY2.1 KNOWING THE SOURCES OF ELECTRICITYL____________________________________________________________________'A

0 (B) Circle the correct answer.1

The figure above shows a dynamo used in .......................................

A.watches. C. bicycles.

B. irons. D. transistor radios.

2. State the energy conversion that occurs in the figure below.

A.Chemical energy > electrical energy C. Sound energy electrical energyB.Kinetic energy , electrical energy D. Solar energy electrical energy

3. Name the converter used to generate electricity from the Sun.

A.Dry cell. C. Dynamo.

B.Solar cell. D. Accumulator.

4

B.dynamo. D. dry cell.


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202 ELECTRICITY

2.2 IDENTIFY A SERIES CIRCUIT AND A PARALLEL CIRCUIT

0(A) Fill in the t able below.

Component (2)

(3)

0

Symbol



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4P2 ELECTRICITY

2.2 IDENTIFY A SERIES CIRCUIT AND A PARALLEL CIRCUIT

(B) Circle the correct answer. .j

1. A complete circuit consists of the followingI. Wire 11. Bulb

III . Switch

III. CellA. I and 11 only.

A. 11 and III only.A. I, II and IIIonly.

2.

What is the function of the component in the above figure?A. It gives out light. C. It helps to conduct electricity.

A. It acts as a switch. D. It allows electricity to flow through.

3. Which is a parallel circuit?

A. B. C. D.

0 j


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5. Which is a series circuit.A. B.

C.

@ @ T


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2 ELECTRICITY2.2 IDENTIFY A SERIES CIRCUIT AND A PARALLEL CIRCUIT

21

1.

A. Tick (V) the complete circuit.

dRuler "1

A. The figure below shows a complete circuit with all its components.Draw a circuit as shown using symbols only.


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2. Which of the component is a source of energy?@ PENERBIT SERI SANJUNG SDN. BHD. (574018.T)

21


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21

r-I

2 ELECTRICITY2.2 IDENTIFY A SERIES CIRCUIT AND A PARALLEL CIRCUIT

C. Circle the correct answer.

1. Which of the bulbs in the series circuits shown below are the brightest.

A B C~

o

T ..

2.

The above figure shows a series circuit with two bulbs. What will happen if one of the bulbs is

blown?


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blown?

A. The other bulb will light up. C. The other bulb will not light up.

A.The cells lose their energy. D. The switch will have to be replaced.



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2 ELECTRICITY

2.3 UNDERSTANDING THE SAFETY PRECAUTIONS TO BE TAKEN WHEN HANDLING

ELECTRICAL APPLIANCES

22

(A) Wri te d own the us es o f th e el ec tr ic al a ppl ia nce s shown below.

(4)

(1)

(3)

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2 ELECTRICITY

2.3 UNDERSTANDING THE SAFETY PRECAUTIONS TO BE TAKEN WHEN HANDLINGELECTRICAL APPLIANCES

221.

1.

(B) Circle the correct answer.

What safety precaution should be taken when using the above electrical appliance?A. Set it to the correct temperature. C. Put it on the floor.

A. Do not touch it. D. Switch if off when not using.

C. I, II and III only. D. I, II, 111111 and IV.


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I

Ata

What safety precautions should be taken when using the switch as shown above.

I. Do not poke with a metal II. Do not use it when it is broken

III. Do not hammer a nail around it IV. Do not switch off with wet hands

A. I and II only. B. I and III only. C. I, II and III only. D. I, II, III and IV.

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2 ELECTRICITY2.3 UNDERSTANDING THE SAFETY PRECAUTIONS TO BE

TAKEN WHEN HANDLING ELECTRICAL APPLIANCES

23(A) Tick (,/) the pictures that show the correct way of using

electrical appliances.j

(3)

(1)(2)


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(4)

C B) Write true or1. Switch off all electrical appliances when leaving a premise.

1. Do not touch electrical appliances if hands are wet.

2. Do not handle faulty electrical appliances.

3. Electricity does not cause fire.

4. Repair faulty electrical appliances with a screwdriver.



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2 ELECTRICITY

2.3 UNDERSTANDING THE SAFETY PRECAUTIONS TO BE TAKEN WHEN HANDLING

ELECTRICAL APPLIANCES

23(B) Write true or false.

1. What inference can you make about the two electrical appliances shown above?

2. State the energy conversion that occur in both the appliances.

P

Q

3. Name another electrical appliance that has the same energy conversion as P.

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3 LIGHT


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3.1 UNDERSTANDING THAT LIGHT TRAVELS IN A STRAIGHT LINE

24(A ) C i rc le the co r rec t answer .

1. The figure below shows a ch ild looking fo r his ba ll. He can't see the ball because ..................................................

A. light travels in a straight line.

B. light is blocked by the door.

C. the ball is too far away.

D. it is too dark.

2. Which of the following objects allow light to pass through? I.

Manila card

11. Net

III. Water

III. Glass

A. I ana ii only.

ts. I and III only.

C, ii and IV only. D. i, ii, m and IV.

3. Which of the following objects allow light to pass through?

A.


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24

4?3 LIGHT3.1 UNDERSTANDING THAT LIGHT TRAVELS IN A STRAIGHT LINE

k, -A

(A) Circle the correct answer.

4.

In the above diagram, the shadow formed on the screen would be enlarged if..................................A. the source of light is stronger.

A. the object is placed nearer to the screen.

B. the object is placed nearer to the source of light.

B. the object is further from the source of light.

5. T - glass U - coin V - bag W - ballWhich of the above objects can form shadows when light is shown on them?

A. T and U only.

A. T and V only.

B. T and W only.C. U, V and W only.


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3 L IGHT


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3 G

3.1 UNDERSTANDING THAT LIGHT TRAVELS IN A STRAIGHT LINE 3.2 UNDERSTANDINGTHAT LIGHT CAN BE REFLECTED

Circle the correct answer.

Translucent material

Transparent material

Opaque material

L i

25

4P1.

What inference can you make from the above activities?

A. The light of the candle cannot form shadows.

B. Transparent material does not allow light to pass through.

C. Opaque material does not allow light to pass through.

D. Translucent material allows light to pass through.

Th h d f d i th b fi h th t th bj t i l d


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The shadow formed in the above figure shows that the object is placed...................

A. nearer to the source of light.

B. nearer to the screen.

C. upside down.

D. too near to the source of light.


3 LIGHT3 1 UNDERSTANDING THAT LIGHT TRAVELS IN A STRAIGHT


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3.1 UNDERSTANDING THAT LIGHT TRAVELS IN A STRAIGHTLINE 3.2 UNDERSTANDING THAT LIGHT CAN BE REFLECTED

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C-)Circle the correct answer.

The above figure shows a light shining at an object.

Which of the following is the image formed on the screen?

3.

A

. B. C. D.

The above ray diagram shows the way light travels when it falls on a ...............................

A. flat and smooth surface. C. rough surface.

B. stone. D. uneven surface.

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3 LIGHT


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3.2 UNDERSTANDING THAT LIGHT CAN BE REFLECTED

M 0 126C?

A. Study the figure below and answer the questions that follow.

1. The shadow formed on the screen is larger than the original object because

1. What will happen if the object is moved closer to the screen?

1. What will happen to the shadow if you change the position of the light source?

Of



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3 L IGHT


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3 L IGHT

3.2 UNDERSTANDING THAT LIGHT CAN BE REFLECTED

26B. Circle the correct answer.

1. Which of the following is not an example of the reflection of

light? A. Side mirror. B. Mirror. C. Periscope.

D. Kaleidoscope.

2. Why is a mirror placed at the side of a car?

A. To enable the driver to see himself.

B. To reflect light from the other cars.

C. To help driver see around the bend.D. To help driver see the traffic situation behind him.

'I Which nf fhprprim mmip hmpti nn the nrinrinip nf light rpflimrfinn?

I. Spectacles II. Periscope III. Telescope IV. Side mirror

A. I and II only. C. II and III only.

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

4. Which of the following objects are good reflectors of lights?@ P E N E R B I T S E R I S A N J U N G S D N . 1 3 1 - 1 1 3 . ( 5 7 4 0 1 8 - T )

I. Mirror II. Glass

A. I and II only.

B. I and III only.

III. Wood IV. Black curtain

A d l

B. I, II, 111 and IV.


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1. Which of the statements are true about heat?

I. Heat can be felt. III. The Sun gives out heat.

II. Heat is a form of energy. IV. Heat can pass through metals.

A. I and II only. B. I and III only. C. I, 11 and III only. D. I, II, III and IV.

2. A thermometer is used to measure.....................................

A. mass. B. length. C. temperature. D.

3. Mercury is used in a thermometer because .......................................

A.of its colour. C. it contracts.

B. it expands. D. it expands and contracts easily.

4. The figure below shows a thermometer in a beaker of ice cubes. How does the mercury level

reacted in the thermometer?

n

A. The mercury level goes up.

B. The mercury level goes down.

C. The mercury level does not change.

D. The mercury level goes up and down.

IceThermometer

Beaker@ PENERBIT SERI SANJUNG SDN BHD (574018 T)


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4 HE AT

4.1 UNDERSTANDING THAT TEMPERATURE IS AN INDICATOR OF DEGREE OFHOTNESS

27

C) Circle the correct answer.5. A group of pupils are striking two stones together as shown below.

Stone

,-f

A. What do they feel when they touch the stones? ...............................................................................

B. What are they investigating? ...............................................................................................................

6. Study the picture below and answer the questions.

Paper Magnifying glass

A. What do you observe?..............................................................................................................................A. What conclusion can you make from the above activity?..........................................................................


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4 HEAT

4.1 UNDERSTANDING THAT TEMPERATURE IS AN INDICATOR OF DEGREE

f'-'* r- r- OF HOTNESS4.2 UNDERSTANDING THE EFFECTS OF HEAT ON MATTER


1. The figure below shows the metal ball being heated. Next, put the ball through the ring.

It cannot go through.

f111P

Ring j a

Candle

A. Why does this happen?

A.What is your conclusion?

A. State the variables in the experiment.

I. Manipulated variable :

II. Responding variable : ...................................................

III.Controlled variable

Metal ball

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4 HEAT

4.1 UNDERSTANDING THAT TEMPERATURE IS AN INDICATOR OF DEGREE OFHOTNESS

4.2 UNDERSTANDING THE EFFECTS OF HEAT ON MATTER

280

Circle the correct answer.2. A thermometer is put into beaker P, which contains hot water. The temperature goes up to 38C.

Next, the thermometer is put into beaker T which contains ice water.

Thermometer

Hot water

A. What happens to the level of mercury in the termometer?

A. What conclusion can you make from this experiment?@ P E N E R B I T S E R I S A N J U N G S D N . 1 3 1 - 1 1 3 . ( 5 7 4 0 1 8 - T )

3. The figure below shows two beakers R and S containing sand. The thermometers in both of the

A. Which beaker has a higher temperature?

A. What is your conclusion? Sand


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Ice water

4 HEAT



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29

E~Answer the following questions.

1. The figure below shows the conditions of telephone cables at a different time of the day.

Why is it so?

Day0"0*4%1

Nightow"" 0"Oft"4F


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4 HE AT

4 2 UNDERSTANDING THE EFFECTS OF HEAT ON MATTER


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29

I&Circle the correct answer.

2. The figure below shows a steel bridge.

What is the function of the rollers at one end of thebridge?

A. Easy to repair the bridge.

B. To allow the bridge to expand on hot days.

C. The bridge can be removed easily.

3. A tightly fastened metal cover of a bottle can be opened when..........................................

A. it is left in the sun for a long time.

B. running hot water onto it.

C. twisting it with a piece of cloth.

D. putting ice cubes on it.

4. The gaps at the railway track allows expansion during hot days to prevent ....................A. the railway track from becoming crooked.

B. the railway track from cracking.

C. the railway track from falling apart.

D the railway track from snapping A. prevent people from stepping on it. D. allow the pipe to expand without breaking.



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@0 INVESTIGATING MATERIALS0

1 STATES OF MATTER


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1 STATES OF MATTER

1.1 UNDERSTANDING THAT MATTER EXIST IN THE FORM OF SOLID, LIQUID OR GAS

30A. Write true or false.

1. Matter is anything that has mass and occupies space.

1. Non-living things are not matters.

2. Solid has mass.

3. Solids have no shapes.

1. The mass of an object always stays the same.



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30


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30~iunl~iyil4c%10 INVESTIGATING MATERIALS

1 STATES OF MATTER1.1 UNDERSTANDING THAT MATTER EXIST IN THE FORM OF SOLID, LIQUID OR GAS

V

B. Circle the correct answer.

1.

Water 30ml

Water

Based on the above figure, find the mass of the stone.

A. 10 ml B. 20 ml C. 30 ml D. 40 ml

2. When 20 g of sugar is poured into an empty beaker with a mass of 24 g.

What is the mass ofthe beaker now?

A. 4 g B. 34 g C. 44 g D. 40 g

2. Based on the figure below, what is the mass of the soil in the beaker?

- Beaker

20 g

Soil

B. Solids have fixed mass.

C. Solids have no mass and volume.



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1 STATES OF MATTER1.1 UNDERSTANDING THAT MATTER EXIST IN THE FORM OF SOLID, LIQUID OR GAS

31


1. Based on the figure below, what inference can you make about liquid?

A. Liquid has fixed volume.

A.Liquid has fixed shapes.

B. Liquid has fixed mass.

A. Liquid follows the shape of its container.

Liquid

100 ml

Water

2.

100MI

Water

100MI

Water


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The above figure shows three containers filled with the same amount of water. What

is the conclusion to the above experiment?

I. Liquid occupies space. II. Liquid follows the shape of its container.

III. Liquid flows from a higher to a lower place. IV. Liquid has fixed volume.

A. I and II only. B. I and III only. C. I, II and III only. D. I, II and IV only.

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1 STATES OF MATTER1.1 UNDERSTANDING THAT MATTER EXIST IN THE FORM OF SOLID,

LIQUID OR GAS


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31Circle the correct answer.

3.

Glass Water

The mass of the glass is 13 g. When the glass is filled with water, the mass of the glass increases to 19 g

What can you conclude from the above experiment?

A. Liquid can be compressed. C. Liquid has fixed mass.

B. Solid fills up space. D. Liquid takes the shape of its container. 4.

Study the figure below and answer the following questions.

Water

Water

A measuring cyl inder is fil led with 80 ml of water. The water is then poured into container T as shown.

What is the volume of the water in the container T?

A. 0.08 litre. B. 0.008 litre. C. 0.8 litre. D. 8.0 litre.

I


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I@ P E N E R B I T S E R I S A N J U N G S D N . 1 3 1 - 1 1 3 . ( 5 7 4 0 1 8 - T )

1 STATES OF MATTER1.1 UNDERSTANDING THAT MATTER EXIST IN THE FORM OF SOLID,

LIQUID OR GAS


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32

I.


The figure above shows that...................................................

A. gas has fixed volume. C. gas has mass.

B. gas has no fixed shape. D. gas can be compressed.

2. The figure below shows two balloons. What can you infer from the experiment?


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I. Gas has mass. II. Gas occupies space. III. Gas can be compressed.

A. I and 11 only. B. I and Ill only. C. I, II and Ill. D. 11 and Ill only.

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32

0


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01 STATES OF MATTER1.1 UNDERSTANDING THAT MATTER EXIST IN THE FORM OF

SOLID, LIQUID OR GAS

Circle the c orrect answer.

3.

4.

The figure above shows that ......................................................

A. liquid has fixed volume. C. gas has mass.

A. liquid can be compressed. D. gas occupies space.111

4 Needle

A B


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33

r1 STATES OF MATTER


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r 191 STATES OF MATTER1.1 UNDERSTANDING THAT MATTER EXIST IN THE FORM OF SOLID, LIQUID OR GAS

QA. Circle the correct answer. r

1. Which of the following flows faster? A. Water.

B. Oil. C. Tomato sauce. D. Glue.

1. Which of the following liquid flows the fastest?

Arrange from the slowest to the fastest.

i hl

P R

A) P, R, Q B) P, R, Q C) Q, P, R D) P, Q, R



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r 19


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r 191 STATES OF MATTER1.1 UNDERSTANDING THAT MATTER EXIST IN THE FORM OF SOLID,

LIQUID OR GAS

B. Fill in the blanks correctly.

Glu Shampoo

1. flows slower than

..............................................

Cocomilk Coconut

'0 juiceOrange

2.................

flows faster than

i "1:87

3.................

flows slower than..............................................



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1 STATES OF MATTER1.2 UNDERSTANDING THAT MATTER CAN CHANGE FROM ONE

STATE TO ANOTHER


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344? Circle the correct answer.

Ice

The figure above shows a few pieces of ice being added to a cup of tea.

Which of the following statements is true about it after a few minutes of observation?

A. The ice melted.

B. Water vapour found at the side of the cup.

C. The hot tea become less hot.D. The volume of the hot tea become less.

2. When ice changes to water, what process had taken place?

A . Evaporation. D. Iviellmy. C. Boilin . D.

2. Ice I________

>

Water

A. Colour. B. Shape. C. Temperature. D. Size.

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1 STATES OF MATTER

1.2 UNDERSTANDING THAT MATTER CAN CHANGE FROM ONE STATE TOANOTHER


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340 Circle the correct answer.

4. The figure below shows four containers containing the same amount of water. They are left in the

Sun for a few hours. Arrange the containers according to the amount of water left in the container fromthe most to the least.

S

A. P, Q, R, S B. Q, R, S, P C. R, P, Q, S D. S, R, Q, P

4.

Water droplets formed on the outer surface of the glass because


A. the ice in The glass melted.

B. the ice in the glass evaporated.


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35C) (A) Answer the following question.

Figure shows an experiment.

1. Describe the stages:T

U

V

2. State the variables in the experiment

I. Manipulated variable :........................................................................................................

I. Responding variable :........................................................................................................

II. Controlled variable : .........................................................................................................



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I STATES OF MATTER1.2 UNDERSTANDING THAT MATTER CAN CHANGE FROM ONE

STATE TO ANOTHER

35


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35(B) Circle the correct answer.

Based on the figure above, what is the conclusion of the observation?

A. T dries up faster.

A.U dries up faster.

B. Both dry up at the same time.

C. T takes a longer time to dry up.

2. What is the intention of drying fish or tea leaves in the Sun?A. To make the food more tasty.

A.To preserve the food.

B. To kill bacteria.

C. To add colour to the food.

3. How is milk powder processed?

A. By drying in the sun.

A.By blowing with a fan.

B. By boiling.

C. By evaporation.


1 .


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STATE TO ANOTHER


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36(A) Answer the fol lowing questions.

1. The figure shows two pieces of equally damp handkerchieves. One is left in the Sun while the other is

in the laboratory.

(A) State the variables of the above experiment.


II. Responding variable :II. Constant variable :

(B) What is the observation of the experiment.

(B) What is the conclusion to the experiment?

@ ) P E N E R B I T S E R I S A N J U N G S D N . B H D . ( 5 7 4 0 1 8 - T )


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1.2 UNDERSTANDING THAT MATTER CAN CHANGE FROM ONE STATE TO ANOTHER

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36

V (A) Answer the following questions.2. The figure below shows a damp towel placed under a moving fan. While an equally damp towel is

kept in a cupboard.

(A) What is the aim of the experiment?

(A) State the variables of the above experiment.


II. Responding variable

III. Constant variable :

(C) What is the observation of the experiment?

(D) What is the conclusion to the experiment?

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1 STATES OF MATTER


37


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37


f.

Name the process for the change of the above figure.

A. Melting. C. Boiling.

B. Freezing. D. Condensation,

2. The two similarities found in the process of boiling and evaporation are.......................................................

I. absorption of heat.

II. quick process.

III. liquid changes to gas.

A. I and 11 only. C. 11 and Ill only.

B. I and Ill only. D. I, 11 and Ill.

3. Study the table below and state which is wrongly paired.

Process Change in state

Condensation Gas > Liquid

Freezing Liquid Solid

Evaporation Liquid Gas

Melting Liquid -> Solid

A

BC

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37


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37

V Circle the correct answer.Water

Based on the above figure, which of the following statements are correct about it?

I. Process I is melting.

II. Process II is boiling.III. Process III is boiling.

IV. Process IV is evaporation.

A. I and 11 only. C. II and III only.

B. I and Ill only. D. I, 11 and Ill only.

5. The process of freezing happens at

Liquid IV GasGas Liquid

Solid

A. I. B. 11. C. III. D. IV.



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Water

Steam

Ice

4.

38

r 191 STATES OF MATTER1.3 UNDERSTANDING THE WATER CYCLE


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L_____________________________________________________________________________________________A

C(A)Answer the following questions.

IProcess T I

Process R

1. The above figure shows a water cycle

................. A What is process R and T?Process R ........................................

Process T .........................................

2. What is the form of water in S?

1. How is U formed?

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1.3 UNDERSTANDING THE WATER CYCLE


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38(B) C i rc le the co r rec t answer .

R - Evaporation S - Melting T - Condensation U -

After a rain, there are puddles of water on the ground. When the sun comes out, this process happens.

A. R only.

B. R and S only.

C. S and T only.

D. U only.

2. Based on the figure below, what is observed?

A. The hot water becomes ice.A. The ice becomes water.

B. Water vapour is formed at the bottom of the dish.

C. The level of hot water rises.@ P E N E R B I T S E R I S A N J U N G S D N . 1 3 1 - 1 1 3 . ( 5 7 4 0 1 8 - T )

1 STATES OF MATTER

1.4 APPRECIATING THE IMPORTANCE OF WATER RESOURCES


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39eA . C i r c l e t h e c o r r e c t a n swe r .

1. Water pollution can be prevented by

A. building more factories.

A.planting more trees.

B. treating the water with chemicals.

C. not dumping rubbish into rivers.

2. Which of the following activities can decrease water pollution?

A. Recycling materials.

B. Building more factories.C. Using chemical fertilizers.

D. Hold campaigns to educate the people on the importance of clean water resources.

3. Polluted water..........................................................

I. can cause skin diseases.11, kills aquatic life. III. may contain harmful chemicals.

A. I and II only. B. I and III only. C. II and III only. D. I, II and III.

4. Which of the followings can improve water resources?

I. Stop factories from dumping their chemical wastes into rivers.

II. Encourage the farmers to use more fertilizers.



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39


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3B. Answer these questions :

1. State two activities that can destroy Earth resources. (A)..................................

..........................................................(B)

1. Why is it important to keep our water resources clean?


4

02 ACID AND ALKALI2.1 UNDERSTANDING THE PROPERTIES OF ACIDIC,

ALKALINE AND NEUTRAL SUBSTANCES


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A. Circle the correct answer.

Substance X Blue litmus turnsred

Based on the above figure, what is investigated?

A. Whether the substance is hot.

A.Whether the substance is neutral.

B. Whether the substance is acidic.

C. Whether the substance is alkaline.

2. Substance P is tested with a red litmus paper. The litmus paper turns blue.

Red litmus turns blue

Substance P

What is substance P?

A. Pineapple juice. B. Vinegar.

C. Detergent solution. D.Milk.



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2.1 UNDERSTANDING THE PROPERTIES OF ACIDIC, ALKALINE AND NEUTRAL SUBSTANCES

40


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A. Circle the correct answer.

3.Blue litmus

Substance P

Based on the above figure, the b lue litmus paper will turn red if substance P is .............................

A. salt solution. B. water. C. Chinese tea. D. soap solution.

4. After investigation with litmus papers, no change is recorded. What is substance X?

A. Mango juice. B. Orange juice. C. Milk. D. Lemonade.

5. Study the table below and detect which is wrongly matched.

Substance Changes

HoneyBlue litmus

Red

Sugar solution Red litmus Blu

Toothpaste Red litmus Blu

Lime juice Blue litmus Red

A.

A.

C.@ P E N E R B I T S E R I S A N J U N G S D N . 1 3 1 - 1 1 3 . ( 5 7 4 0 1 8 - T )


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41A. Investigate and fill in the blanks with the correct information.

MW

Substance Colour changes of litmus paper Inference Taste


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1 Vinegar

2 Porridge

3 Green apple

4Coffee

5 Syrup

6 Orange juice

7 Chinese tea

8 Honey

9 Bitter gourd juice

10 Coca-cola

F,

2 ACID AND ALKALI

2.1 UNDERSTANDING THE PROPERTIES OF ACIDIC, ALKALINE AND NEUTRALSUBSTANCES

L________________________________________________@ PENERBIT SERI SANJUNG SDN. MD. (574018-T)


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AND NEUTRAL SUBSTANCES


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41B. Circle the correct answer.

1

.

Sour taste Blue litmus turnsred

Based on the above information, which of the following have the same characteristics as the above?

I. Bitter gourd II. Lemon III. Vinegar IV. Syrup

A. I and II only. B. II and III only. C. I, II and III only. D. I, II, Ill and IV.

2. Alkaline substances taste.........................................A. sweet. B. salty. C. sour.........D. bitter

3. An unripe mango juice can turn a ..........................................

A. blue litmus red.

B. red litmus blue.

C. white litmus blue.

A. blue litmus white.


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