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Medical Agriculture Communications Domestic
Learning Objective: 1.1 Understanding that science is part of everyday life
Answer Scheme
1 Tick (/) in the column below to list down things that happen around us in nature.
a. A baby growing up /
b. Formation of rainbow /
c. A television set is turned off.
d. Sunrise /
e. Raining /
2. Label the pictures below according to the correct fields using the words given.
a.Communications b. Agriculture
c. Medical d. Domestic
3. Underline the correct answers below to name some of the careers in science
A (doctor / biologist) treats patients while a (pharmacist / dentist) prepares and prescribes
drugs for medical purposes.
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Spring balanceStopwatch External calipers Burette
To measure the curve line
To measure the temperature
To magnify the specimen
To measure accurately the volume of liquid
To measure the internal diameter of an object
To heat substances in the laboratory
Learning Objective: 1.2 Science Laboratory
Answer Scheme
Learning Outcome: Identify, state the function and able to use the apparatus correctly.
1 Label the diagrams below to identify science laboratory apparatus.
2 Draw line to match the apparatus with its function.
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Spring balance burette stopwatch external calipers
Identifying the problem
a) Making hypothesis
Plan the experiment
b) Controlling variables
Collecting data
c) Analysing and interpreting data
Making conclusion
d) Writing a report
Learning Objective: 1.2 Understanding the steps in scientific investigation
Answer Scheme
1 Arrange the following steps in scientific investigation in the correct sequence using the phrases below.
.
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Making hypothesis Writing a reportControlling variables Analysing and interpreting data
Learning Objective: 1.3. Knowing physical quantities and their units
Answer Scheme
1. Draw lines to identify three other physical quantities in the word maze below.
W R T O Q W A T A TP R E E U B Z I S EO C Y A M I P M D ML E N G T H Q E F PW O D H W T E A G EQ P T G T M W R H RT U H R E F A S J AW O I U D Y E S K TR G O I E J R D S UU J P O Y K T K L RR Q V P U L Y J A E
2. Complete the table below to state the SI units and the corresponding symbol.
Physical quantity S.I unit Symbol
Length meter m
Mass kilogram kg
Time second s
3. Complete the table below to show the symbols and numerical values for the following prefixes.
Prefix Symbol Numerical value of: lenghtmega M 1 000 000
kilo k 1 000
centi c 0.01
milli m 0.001
4. Measure the diameter of the ping pong ball in the diagram below in cm.
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Diameter = 1.9 cm
cm
Learning Objective: 1.4 Understanding the use of measuring tools
Answer Scheme
1. Draw lines to match the correct measuring tools to measure length, volume and temperature.
2. The diagram below shows a regular shape A and an irregular shape B.Estimate the areas of A and B.
A: 6 cm 2 B: 7 cm 2
3. The diagram below shows an activity to determine the volume of a cork using water displacement method.
.
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Meter rule To measure temperature of substances
Thermometer To measure the volume of a liquid
Measuring cylinder To measure the length of a line
Calculate the volume of the cork:
= (Volume of Cork + Stone + Water) – (Volume of Stone + Water)
= 43 ml – 41 ml
= 2 ml
1cm1cm
1cm1cm
Mass Weight
Quantity of matter a. Pull of gravity
b. Lever balance Spring balance
kilogram c. Newton
Definition
Measuringtools
S.I unit
Learning Objective: 1.5 Understanding the concept of mass
Answer Scheme
1. The diagram below shows two measuring tools.
Tick (/) the correct measuring tool that is used to determine the weight of an object.
2. Complete the statement below to explain the concept of weight.
The weight of an object is the pull of the earth’s gravity on an object.
3. Underline the correct answer to explain the concept of mass.
The mass of an object is the (quantity / quality) of matter in the object.
4. Compare and contrast between mass and weight in the diagram below.
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/
Learning Objective: 1.1 Understanding cells
Answer Scheme
1. The diagram below shows the basic unit of living things.
Complete the following statement below.
The basic unit of living things is called a cell.
2. Complete the table below with the correct order on the usage of the microscope.
Open fully the aperture of the diaphragm and condenser 3
Turn the coarse adjustment knob until an almost clear image is seen 6
Place the slide which has been prepared on the stage and adjust the low-powered lens
5
Turn the fine adjustment knob to obtain a clearer image 7
Adjust the mirror so that light is reflected into the microscope through the condenser 4
Place the microscope on a flat table 1
Use the high-powered lens and use the fine adjuster knob to focus until a sharp image is seen 9
Switch to medium-powered lens and use the fine adjuster knob to focus until a sharp image is seen 8
Direct sunlight ( or lamp light ) towards the mirror 2
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Learning Objective: 1.1Understanding cells
Answer Scheme
1. Identify the structures X, Y and Z using the words given.
X: Nucleus Y: Cell membrane Z: Vacuole
2. Label the general structure of an animal cell and plant cell below using the words given.
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Vacuole Nucleus Cell membrane
Plant cell Animal cell
Cell wall Chloroplast Cytoplasm
a. Cell wall
b. Chloroplast
c. Cytoplasm
Plant cell Animal cell
Learning Objective: 1.1 Understanding cells
Answer Scheme
1. Draw lines to match the correct functions with each structure of a cell.
Cell Wall Stores water and dissolved minerals (salt & sugar solutions)
CellMembrane
The place where chemical processes take place
Cytoplasm Protects and maintains the shape of the cell
Nucleus Regulates movement of substances in and out of the cell
Vacuole Contains chlorophyll needed for photosynthesis
Chloroplast Controls all activities of the Cell
2. Complete the table below to state the similarities and the differences between the two cells using the word below.
Animal cells Plant cells
Absent Cell Wall Present
Present Cell membrane Present
Present Cytoplasm Present
Present Nucleus Present
Absent Vacuoles Present
Absent Chloroplasts Present
Not fixed Cell Shape Fixed
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Absent Present Fixed Not fixed
Learning Objective: 1.2 Understanding unicellular organism and multicellular organism
Answer Scheme
1. Underline the correct answer to state the meaning of unicellular organism and multicellular organism.
a. Organisms that consist of (one / two or more) cell(s) are called unicellular organisms. b. Organisms that consist of (one / two or more) cell(s) are called multicellular organisms.
2. Complete the names of each organism below to give examples of unicellular organisms and multicellular organisms
Unicellular organism
a.
b.
Multicellular organism
a.
b.
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E U G L E N A
A M O E B A
S P I R O G Y R A
M U C O R
a. Epithelial Cells b. Muscle cell
c. Red blood cell d. Nerve cell
Learning Objective: 1.3 Understanding that cells form tissues, organs and systems in human body
Answer Scheme
1. Fill in the blanks with the answer given in the box below.
2. Draw lines to match the following cells with the correct functions.
Cell Function
Red blood cell Carries information in our body
Epithelial Cell Allows movement
Nerve cell Covers the body surface
Muscle cell Transport oxygen
3. Complete the arrangement of cell organisation below from simple to complex using the terms cell, tissue, organ, system and organism using the words given.
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Muscle cell Epithelial Cells Nerve cell Red blood cell
Organ Tissues Organism
Cell Tissues Organ System Organism
Learning Objective : 1.1 Understanding that matter has mass and occupies space
Answer Scheme
1. Underline the correct answers to state that things have mass and occupy space.
(a) The diagram below shows an experiment.
At the beginning of the experiment At the end of the experiment
The result of the experiment shows that air has (weight / mass).
(b) The diagram shows an empty glass inverted in a basin of water.
Diagram 1
Water does not enter the glass because air occupies (space / volume).
2. Complete the following statement.
Matter is anything that has mass and occupies space .
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P Q R
Learning Objective: 1.2 Understanding the three states of matter
Learning Objective: 1.3 Understanding the concept of density
Answer Scheme
1. Complete the statement below.
Matter is made up of particles.
2. (a) Complete the statement below to state the three states of matter.
The three states of matter are solid, liquid and gas
(b) Complete the table below to identify the states of matter for the following substances.
Substances State of matter
Water Liquid
Oxygen Gas
Vinegar Liquid
Ice Solid
3. Complete the table below to show the arrangement of particles in matter using the phrases given.
States of matter
Solid Liquid Gas
Arrangement of particles Closely packed Further apart Very far apart
4. Complete the table below to show the difference in movement of particles in matter using the phrases given.
State of matter Solid Liquid Gas
Movement of particles Vibrate about a
fixed positions
Move freely Move freely and
faster
Answer Scheme
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Further apart Closely packed Very far apart
Move freely and faster Move freely Vibrate about a fixed positions
Learning Objective: 2.1 Knowing the different resources on earth
1. Complete the following statement to define density.
Density of a substance is the mass per unit volume of that substance.
2. The diagram shows two objects P and R placed in a gas jar containing liquid Q.
Underline the correct answer to explain why some objects, liquid float.
i. P floats in Q because P is (denser, less dense) than Q.
ii. R sinks in Q because R is (denser, less dense) than Q.
3. A book has a mass of 250 g and volume of 500 cm³.
Answer Scheme
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Calculate the density of the book using the formula given.
Density = Mass = 250 g = 0.2 g / cm 3
Volume 500 cm3
Learning Objective: 2.2 Understanding elements, compounds and mixtures
1. Draw lines in the word maze to list four other resources on Earth needed to sustain life.
F O S S I L F U E L
A B C D E F G H I A
Z R O S L A N M N I
Y W A T E R J K L R
W S G F E D C B A O
A M O J K L A M O N
B A C I H A F I Z M
C S E B L B Z I Z L
D M I N E R A L S W
E F G H I J K A K U
2. Complete the following statements below to identify the resources on Earth used in everyday life using the words given.
a) Earth is surrounded by a layer of air called the atmosphere .
b) Earth is also rich in minerals which are trapped in the crust. Many important metals can be
extracted from the mineral ores.
c) Fossil fuels are formed from dead plants and animals buried under pressure and being
subjected to high temperature over thousands of years, for example, coal, natural gas
and petroleum.
Answer Scheme
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minerals atmosphere fossil fuels
Compound Element Mixture
Compound Element Mixture
Element
Compound
Mixture
Consists of two or more elements that are chemically combined.
Consists of two or more elements or compounds mixed together physically.
Consists of one type of atom only.
Learning Objective: 2.2 Understanding elements, compounds and mixtures
1. a) Label the diagram below to identify the element, compound and mixture based on their molecular structures using the words given.
b) Draw lines to match the following statements with the correct terms.
2. Identify the following substances as elements, compounds and mixtures.
Substances Element / Compound / Mixture
Carbon dioxide Compound
Oxygen Element
Silver Element
Milk Mixture
Sea water Mixture
Answer Scheme
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Learning Objective: 3.1 Understanding what air is made up of
1. Underline the correct answer below to compare the differences between mixtures and compounds.
Characteristic Mixtures Compounds
a) Preparation - persediaan (Physical / Chemical) (Physical / Chemical )
b) Proportion of components (Not fixed / Definite) (Not fixed / Definite)
c) Energy absorbed or given off during preparation
(Yes / No) (Yes / No)
d) New properties as compared to old properties
(Same / Different) (Same / Different)
e) Method of separation (Physical / Chemical) (Physical / Chemical)
2. Classify the following elements into two groups based on their characteristics given below.
Elements Surface Conductivity of Heat
Copper Shiny Good
Sulphur Dull Poor
Mercury Shiny Good
Phosphorus Dull Poor
Answer Scheme
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METALS
CopperMercury
NON-METALS
SulphurPhosphorus
Elements
Learning Objective: 3.2 Understanding the properties of oxygen and carbon dioxide
1. Draw lines in the word maze to identify six other components of air.
C M C M I C S L N A I R P H
O A G A N I T I Y B U S E A
O C R M I C T A N I S I W F
L A Y B K R U E C S T S G I
I B U X O C I R A P W X D Z
D E R G O N O X Y G E N T F
R S E S E V D U S T K W A O
O N C R Y O S I G X I C I N
W A T E R V A P O U R N T G
P I R A I N S T O X N X S A
M I C R O O R G A N I S M S
O D T W N T I X O O X D T I
T I N E R T G A S E S A E D
2. Underline the correct words to explain why air is a mixture.
(a) The components of air are (physically / chemically) combined.
(b) The proportions of the components are (fixed / not fixed).
3. Based on the pie chart, complete the table below to show the percentages of gases in air.
Answer Scheme
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21%
78%
0.03%%0.97%
Learning Objective: 3.3 Understanding oxygen is needed in respiration
1. Compare and contrast the properties of oxygen and carbon dioxide in the table below.
Oxygen Properties Carbon dioxide
Colourless Colour Colourless
Odourless Odour Odourless
Not soluble Solubility in sodium hydroxide solution
Very soluble
No effect Effect on lime water Lime water turns chalky
Rekindles Effect on glowing splinter Extinguished
2. The table below shows the result of Gas X and Gas Y.
Gas Test with Result
Gas X lime water Gas X turns lime water chalky
Gas Y glowing splinter Gas Y rekindles a glowing splinter
Identify the gases X and Y in the following activities
Gas X. : Carbon dioxide
Gas Y. : Oxygen
3. Based on the information in questions 1 and 2, underline the correct test for oxygen and carbon dioxide.
a. Oxygen can be tested by using (glowing splinter / lime water).
b. Carbon dioxide can be tested by using (glowing splinter / lime water).
Answer Scheme
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Oxygen + Glucose Carbon dioxide + Water + Energy
Learning Objective: 3.3 Understanding oxygen is needed in respiration
1. Complete the word equation below to show the products of respiration.
2. The diagrams A and B show activities on respiration.
Diagram A
a. Based on the diagram A, complete the statement below.
Living things use oxygen during respiration.
Diagram B
b. Based on the diagram B, complete the statement below.
Living things give out carbon dioxide during respiration.
Answer Scheme
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A B
Learning Objective: 3.4 Understanding oxygen is needed for combustion
1. Compare and contrast the content of oxygen in inhaled and exhaled air in the table below.
Gas
Composition (%)
Inhaled air Exhaled air
Oxygen 21% 16 %
Carbon dioxide 0.03% 4%
Water vapour Less More
2. The diagram below shows the result of an experiment on respiration.Based on the diagram, complete the statement below
Living things need oxygen gas in the air for respiration.
Answer Scheme
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Learning Objective: 3.5 Analysing the effects of air pollution
1. Complete the statement below to show what combustion is.
Combustion is the process in which a substance burns in air / oxygen when heated.
2. The diagram below shows an activity on combustion.
Underline the correct answer to show why the candle extinguishes after a few minutes.
The candle extinguishes after a few minute because oxygen is (needed / not needed) for
combustion.
3. Complete the word equations below to show the products of combustion
Answer Scheme
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Carbon + oxygen Carbon dioxide + Energy
Hydrocarbon + oxygen Carbon dioxide + Water + Energy
Smoke,soot,smog Chlorofluorocarbon
Lead compoundsOxides of nitrogen
Sulphur dioxide
a. Dust
c. Carbon dioxide
b. Carbon Monoxide
Learning Objective: 3.5 Analysing the effects of air pollution
1. Complete the statement below to explain what air pollution is with the words given.
Air pollution occurs when substances that are harmful to our health or that can cause
damage to our environment are found in the air.
2. List some examples of air pollution by completing the chart below.
3 Complete the table with the correct sources of air pollutants as given below.
Air pollutants Sources Effect
Smoke and sootBurning of rubbish,
combustion of fuels in motor vehicles and factories
Dizzy or headache, if inhaled in small quantity; dangerous if inhaled
in large quantity
Carbon dioxide Motor vehicles exhaust, cigarettes smoke
Causes breathing problems, damages human respiratory system
Sulphur dioxideCombustion of fossil fuels in motor vehicles and factories
Causes acid rain, which corrodes buildings, damages crops, forests
and aquatic life
Answer Scheme
1. Draw lines to match the effects of air pollution with its air pollutant.
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health damage harmful
Motor vehicles exhaust, cigarettes smoke Burning of rubbish, combustion of fuels in motor vehicles and factories Combustion of fossil fuels in motor vehicles and factories
X Light energy + Heat energy
Learning Objective: 1.1 Understanding the various form and sources of energy
Effects Air pollutants
2. Draw lines to match the air pollution with the steps needed to prevent and control air pollution.
Pollution Steps needed to prevent / control air pollution
Answer Scheme
1. The diagram shows an oil lamp.
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Depletion of ozone layer
Acid rain
Greenhouse effect
Gaseous pollutants such as sulphur dioxide and nitrogen dioxide dissolve in rain water.
Chlorofluorocarbon
Rise in the level of carbon dioxide trapped in the Earth’s atmosphere
Depletion of ozone layer
Haze
Global warming
Acid rain
1. Avoid using CFC-based products2. Carrying out intensive research on CFC alternatives.
1. Growing more trees to reduce amount of carbon dioxide.2. Reducing emissions of greenhouse gases such as carbon dioxide, methane and CFC.
1. Switching to fuels with low content of sulphur such as natural gas.2. Removing sulphur compounds from fossils fuels prior to burning.
1. Prohibiting burning of forests for land clearing purpose.2. Installing catalytic converter to exhaust systems of motor vehicles.
b) Heat energya) Light energy SUN
Learning Objective: 1.2 Understanding renewable and non renewable energy
Identify the energy that is represented by X: Chemical energy.
2. Label the diagram below with the primary energy that comes from the Sun.
3. Label the diagram below to identify the various form of energy using the words below.
Sound Energy Potential Energy Heat Energy Electrical Energy
4. Draw lines to identify three other words that show the sources of energy.
S G H I J K L M W N
T U V W X Y Z A I O
E F N A B C D E N P
D E F G H I G H D Q
A D E F G H I J K R
L M W A T E R T U S
I H G F E D C B A T
G E O T H E R M A L
Answer Scheme
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Heat Energy Electrical Energy Sound Energy Potential Energy
RenewableSunWind
Non renewableOil
Oil Sun Wind
Learning Objective: 2.1 Understanding heat as a form of energy
1. Underline the correct answer in the statement below to define renewable and non renewable sources of energy.
(a) Renewable energy sources are those sources of energy that
(will run out / will never run out) after they have been used.
(b) Non renewable energy sources are those sources of energy that
(will run out / will never run out) after they have been used.
2. Class the following sources of energy into two groups.
3. Underline the correct answer in the statement below to explain why we need to conserve energy.
Most of the energy that we use comes from fossil fuels and are a (renewable/Non
renewable) source of energy which will not last long.
4. Tick ( ) in the box given to suggest ways how to use energy efficiently.
a) Replace filament bulbs with florescent lamps.
b) Use personal cars instead of buses and light-rail transit (LRT).
Answer Scheme
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Learning Objective: 2.2 Understanding heat flow and its effects
1. Complete the statement below to state what the sun gives out.
The sun is the main source of heat and light energy.
2. Rearrange the letters in the boxes below to identify other sources of heat energy.
B U S T C O M I O N
C O M B U S T I O N
T R I E L E C C I T Y
E L E C T R I C I T Y
I C T F R I O N
F R I C T I O N
3. Complete the statement below to explain what heat is.
Heat is a form of energy.
4. Write true or false for the following uses of heat.
Uses of heat True/False
a. To cook food and boil water True
b. To dry wet clothes True
c. To change water to ice. False
Answer Scheme
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Learning Objective: 2.2 Understanding heat flow and its effects
1. Underline the correct words in the statement below to show the effects of heat on solids, liquids and gases.
Solids, liquids and gases (expand / contract) when they absorb heat but
(expand / contract) when they cool down.
2. State two other method of heat transfer:
a. Conduction
b. Convection
c. Radiation
3. Underline the correct answer in the statement below to state how heat flow shown in the diagram below.
Our hands feel hot because heat flows from (hot / cold) region to (hot / cold) region.
4. Name two examples of heat flow in natural phenomena caused by convection currents as shown in the diagram below.
a. Sea breeze b. Land breeze
Answer Scheme
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Learning Objective: 2.3 Analysing the effect of heat on matter
1. Complete the statements below to explain what a conductor is.
a. Solids that conduct heat are called conductor.
2. Underline the correct answer below to explain what an insulator is.
b. Solids that (conduct / do not conduct) heat are called an insulator.
3. Draw lines to match the conductors and insulators to their uses in daily life.
Conductors / Insulators
Uses in daily life
Mercury
Woollen clothes
Aluminium
Ice
Wood
To keep our body warm during winter
To detect heat in thermometers
Igloos are made of ice to retain heat
For making handles of frying pans
For making cooking utensils
Answer Scheme
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Learning Objective: 2.4 The uses of expansion, contraction and application in daily life
1. The diagram below shows the changes in the state of matter in physical processes.
Name these physical processes below using the words below.
P : Sublimation
Q : Freezing
R : Boiling
S : Melting
T : Condensation
2. State whether heat is absorbed or released in the processes below.
Process Changes Absorb heat / Release heat
a. Ice melting
b. Water boiling
c. Water freezing
Solid Liquid
Liquid Gas
Liquid Solid
Absorb heat
Absorb heat
Release heat
Answers Scheme
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Condensation Boiling Sublimation Melting Freezing
LeLearning Objective: 2.5 Understanding that dark, dull objects absorb and give out heat better
1. Draw lines to match the uses of expansion or contraction of matter with the correct application in daily life.
Uses of expansion or contraction of matter Application
a. Gaps allow the iron bridge to expand on a hot day. Thermometer
b. It is hung loosely between poles to allow for contraction at night.
Fire alarm
c. Mercury expands when heated and contracts when cooled.
Telegraph wire
d. The production of heat causes bimetallic strip to straighten or curve and connects or disconnects the electrical circuit.
Concrete road
e. Gaps allow for expansion on hot days so that the surface does not crack.
Steel bridge
2. The following statements are ways of applying the principle of expansion and contraction of matter in solving simple problems. Write True (T) of False (F) to the following statements that are based on the principle of expansion and contraction?
a. Soaking a pair of dirty socks in hot water before washing.
b. Immersing a dented ping pong ball in hot water to regain its shape.
c. Immersing two glasses which are stuck together in hot water to separate them.
d. Heating an empty cooking pot to loosen its cover stuck to the pot.
Answer Scheme
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F
T
T
T
W X
Y Z
1. The diagram below shows an experiment.
Underline the correct answers in the statement below to show the result of the experiment.
(Dark and dull / White and shiny) object absorbs heat better than (dark and dull / white and
shiny) object.
2. The diagram below shows an experiment.
Underline the correct answers in the statement below to show the result of the experiment.
(Dark and dull / White and shiny) object gives out heat better than (dark and dull / white and
shiny) object.
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