Integrated Science – Year 8 – L5 to L8 – 2018 Page 1 of 12

DEPARTMENT FOR CURRICULUM,

RESEARCH, INNOVATION AND LIFELONG LEARNING

Directorate for Learning and Assessment Programmes

Educational Assessment Unit

Annual Examinations for Middle Schools 2018

YEAR 8 INTEGRATED SCIENCE TIME: 1h 30min

Name: ________________________________________ Class: ________________

ANSWER ALL QUESTIONS

1. Kristina takes part in different sports.

a) The picture below shows Kristina’s favourite meal before a football match.

Which food is

i) a source of energy? _________________________

ii) rich in fibre? _______________________________ (2)

b) Kristina has three options for her dessert.

i) Which one would you advise her to choose?

___________________________________________________________ (1)

ii) Give a reason for your answer. _________________________________

___________________________________________________________ (1)

banana and strawberries cake dried food and nut mix

glass of water

spaghetti with tomato sauce

ham, cheese and lettuce

wholemeal sandwich

LEVELS

5 – 6 – 7 – 8

Page 2 of 12 Integrated Science – Year 8 – L5 to L8 – 2018

Kristina takes part in four different sports, as shown in the pictures below.

The table below shows the average energy needed for each sport for one hour.

Sport Average energy needed for one hour (kJ)

Football 2250

Running 3700

Bowling 1040

Tennis 1775

Kristina plays football for two hours each week and goes for bowling for two hours each week.

c) How much energy does Kristina use up during her two-hour football session?

_______________________________________________________________(1)

d) Explain why Kristina uses up her food reserves more quickly when playing football

than when bowling.

__________________________________________________________

_________________________________________________________ (1)

e) Athletes are advised not to smoke. Name two effects smoking could have on the

athlete’s body.

_________________________________________________________________

______________________________________________________________ (2)

f) After heavy exercise, the athlete’s heart rate increases. Explain why.

______________________________________________________________ (1)

(Total: 9 marks)

Integrated Science – Year 8 – L5 to L8 – 2018 Page 3 of 12

2. The diagram shows a mirror used by a dentist to see the back of a patient’s tooth.

a) Draw rays of light on the diagram above to show how the dentist is able to see the

tooth labelled A. (2)

b) The image of the tooth is formed on the retina of the dentist’s eye. Describe the

image formed on the retina.

______________________________________________________________ (1)

c) The diagram below shows the internal structure of the dentist’s eye.

Name the parts of the eye labelled

A: ________________ B: ________________ C: ______________ (3)

d) The dentist observed that one of the patient’s molars and a canine were decaying.

Name the function of each type of tooth.

Molar: __________________________________________________

Canine: __________________________________________________ (2)

e) State one reason why the patient’s teeth may be decaying.

_____________________________________________________________ (1)

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f) In the dentist’s waiting room, Serena discussed with the other people about her

daughter’s ear infections.

i) Explain how a vaccine helps to prevent ear infections.

__________________________________________________________

__________________________________________________________(2)

ii) On the diagram of the ear,

label the ear drum and the

cochlea.

(2) iii) Explain how sound travels along the ear.

________________________________________________________ (1)

(Total: 14 marks)

Integrated Science – Year 8 – L5 to L8 – 2018 Page 5 of 12

3. Read the story below, then answer the questions that follow.

During their wedding, Dorothy and John gave each other a gold

ring. They organised a party, inviting all their relatives and

friends.

Dorothy’s mum baked a huge cake decorated with pink sugar

roses and paid for the colourful fireworks that opened the dances.

a) Gold is a metal. Name TWO characteristics of gold that show it is a metal.

______________________________________________________________

______________________________________________________________(2)

b) Circle ONE symbol of an element and state the name of that element.

Mg Cu Al Au Fe

________ ________ ________ ________ ________ (1)

c) Two statements in the story above show chemical changes. Write the two

statements below.

___________________________________________________________

___________________________________________________________ (2)

d) Give one reason why the statements written in ‘c’ are considered as chemical

changes.____________________________________________________ (1)

e) Besides gold, name TWO other metals found in the periodic table and state one

function of each. (4)

(Total: 10 marks)

Name of metal Function in everyday life

Page 6 of 12 Integrated Science – Year 8 – L5 to L8 – 2018

4. Amy’s family is at the beach in summer. She has a

bucket containing seawater and sand.

a) Read the following statements.

Tick () one box for each statement.

i) Water is a solvent for salt.

ii) When a solid dissolves in water

the solid is called a solute.

iii) Sand dissolves in water to form a

solution.

(3)

b) Amy took some seawater to the lab to obtain some salt crystals.

i) Name the method she could use to obtain the salt crystals.

____________________________________________________________ (1)

ii) In the space provided draw the apparatus she needs to use.

(3)

TRUE FALSE

Integrated Science – Year 8 – L5 to L8 – 2018 Page 7 of 12

c) Draw lines to match the substances below to the correct group and each group to

the correct description. One has been done as an example.

(3, 3)

Substance Group Description

seawater

compound

It contains two or more types of atoms or molecules which can be

physically separated.

salt

metal It contains only one

type of atom.

Copper element Two or more types of

atoms are chemically

joined together.

Oxygen mixture

Good conductor of

electricity and heat.

(Total: 13 marks)

5. Someone broke into the IT lab of St. Anne’s middle school over the weekend. Some

computers and a printer were stolen. Forensic experts from the police department were

called to collect evidence. They managed to find only two fingerprints after ‘dusting’ all

the IT lab.

a) One of the fingerprints found is shown below.

i) Three suspects were later arrested and their fingerprints recorded as A, B

and C. Circle the fingerprint which matches that found in the IT lab. (1)

Fingerprint found in IT lab.

Page 8 of 12 Integrated Science – Year 8 – L5 to L8 – 2018

ii) Give a possible reason why forensic experts found only two fingerprints in the IT

lab.

____________________________________________________________

__________________________________________________________ (1)

b) During their investigation the forensic experts found a tiny piece of cloth which had

been caught in the door lock. They suspected that it might belong to one of the

thieves who might have had his sleeve caught on his way out of the lab.

i) What instrument should they use to analyse the cloth’s fibres?

__________________________________________________________ (1)

ii) Analysis of the cloth’s fibre showed the

following results.

Use the chart to find out what type of

material the fibre was made up of.

________________________________ (1)

c) During the same burglary a cheque was stolen from the

office of the Head of School. The Head of School always

uses the same pen to sign her cheques. The cheque was

later found in the clerk’s drawer.

Name the technique used to find out which ink was used to sign the cheque.

___________________________________________________________________ (1)

(Total: 5 marks)

Integrated Science – Year 8 – L5 to L8 – 2018 Page 9 of 12

6. This question is about energy sources.

a) State whether each of the energy sources below are renewable or

non-renewable energy sources. (4)

b) Water wheels are machines that use the energy of flowing water from a river to turn

the wheel. The axle of the wheel also turns, and this is used to drive the machine

by way of belts or gears. This kind of power is called hydropower. In the old days,

water wheels were the main source of power for driving large machines such as the

mills that ground grain into flour.

i) Is the picture showing a source of renewable or non-renewable energy?

_________________________________________________________ (1)

ii) Give one reason for your answer in (i).

_________________________________________________________ (1)

iii) State one advantage and one disadvantage of using hydropower.

Advantage: ________________________________________________ (1)

Disadvantage: _____________________________________________ (1)

(Total: 8 marks)

Wind Power Oil Gas Solar Panels

Page 10 of 12 Integrated Science – Year 8 – L5 to L8 – 2018

7. John and his classmates went on a fieldwork trip. They discussed acid rain and its

effects.

a) i) Name a gas which causes acid rain.

__________________________________________________________ (1)

ii) Give one source of the gas.

__________________________________________________________ (1)

b) Read carefully what John’s classmates are saying. Sam is asking a question

and his friends are responding.

Imagine you are John. How would you answer Sam? Write your answer below.

________________________________________________________

________________________________________________________ (1)

c) State two ways in which air pollution can be reduced.

_____________________________________________________________

_____________________________________________________________ (2)

d) Acid rain is an example of air pollution. State two sources of sea pollution.

_____________________________________________________________

_____________________________________________________________ (2)

(Total: 7 marks)

Why don’t the hills

dissolve in the acid

rain?

The rain is too cold

to dissolve the rock.

If the hills are made

of chalk they will

dissolve.

The rock is too hard

to dissolve.

Integrated Science – Year 8 – L5 to L8 – 2018 Page 11 of 12

8. This question is about Earth and Space.

a) The diagram below shows the Sun and the Earth.

i) Shade and label the part of the Earth which is in darkness. (2)

ii) How long does the Earth take to go once round the Sun?

_______________________________________________________ (1)

b) In the diagram below the Earth can be seen moving around the Sun.

i) With the Earth in the position shown, state whether it would be summer or

winter in the parts of the Earth labelled A and B.

A ______________________ B _______________________ (2)

ii) Label the parts C and D

C ______________________ D _______________________ (2)

c) What would it be like if the Earth’s axis was not tilted?

____________________________________________________________ (1)

D

C

A

B

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d) The diagram below shows the positions of the Sun, Moon and Earth during a

solar eclipse.

Write numbers (1-4) on the diagram above to label the features during an eclipse.

1. Earth 2. Moon

3. Sun 4. Region of total solar eclipse (4)

(Total: 12 marks)

9. A group of science students visited Is-Simar Nature Reserve in Xemxija. Negative

human behaviour led to the near destruction of this area, until a local NGO restored it

and converted it into a nature reserve. A guide toured the students around.

a) Explain the importance of a nature reserve.

___________________________________________________________ (1)

b) Name one local NGO that works to protect the environment.

_____________________________________________________________(1)

c) Name two types of negative human behaviour that may have damaged this area.

_____________________________________________________________

____________________________________________________________(2)

d) Students observed a variety of aquatic birds which are attracted by the ponds in

this area. Name two advantages of birds staying in this nature reserve.

_____________________________________________________________

_____________________________________________________________(2)

e) Students observed that at Simar, plants that are usually considered as weeds by

farmers are allowed to grow and no chemicals (pesticides) are used to kill them.

State the importance of this.

______________________________________________________________

_____________________________________________________________ (1)

(Total: 7 marks)