year 8 integrated science time: 1h 30min€¦ · allergic to food colouring x and wanted to test if...

Integrated Science – Year 8 – L5 to L8 – 2019 of 12

DEPARTMENT FOR CURRICULUM,

LIFELONG LEARNING AND EMPLOYABILITY

Directorate for Learning and Assessment Programmes

Educational Assessment Unit

Annual Examinations for Middle Schools 2019

YEAR 8 INTEGRATED SCIENCE TIME: 1h 30min

Name: _________________________________ Class: _________________

ANSWER ALL QUESTIONS

1. The diagram below shows the human digestive system.

a) Name the parts of the digestive system labelled:

A: __________________________ B: ____________________________ (2)

b) Name the part of the digestive system where the processes below take place:

i) Water is reabsorbed from the undigested food: ______________________

ii) Food is mixed with acid and other digestive juices: ___________________

iii) Soluble nutrients are absorbed into the bloodstream: _________________

(3)

LEVELS

5 – 6 – 7 – 8

of 12 Integrated Science – Year 8 – L5 to L8 – 2019

c) The diagrams below show the human circulatory and breathing systems.

Name the system:

i) needed to pump blood around the body: _____________________________

ii) that includes the windpipe, bronchi and bronchioles: ____________________

iii) that can be harmed by too much fat in the diet: _____________________(3)

d) The apparatus below shows an experiment carried out to test the effect of

cigarette smoke on the body. The cigarette was lit and the pump was turned on

to suck the smoke.

i) Name the human body organ represented by the white cotton wool.

_________________________________________________________(1)


ii) After the experiment, the white cotton wool changes to yellow and black.

Name the chemical in cigarette smoke that causes this change and

describe its effect on the human body.

Name of chemical: _________________________________________ (1)

Effect: ___________________________________________________ (1)

iii) What do you think will happen to the temperature shown on the

thermometer during this experiment?

_________________________________________________________(1)

(TOTAL: 12 marks)

2. Chefs use yeast to prepare pizza dough. Science students carried out the

experiment shown below to study yeast and its importance for chefs.

They filled a glass bottle with warm water, a teaspoon of sugar and a teaspoon of

yeast. They put a balloon over the top of the bottle and observed what happens.

After some time, the balloon started to inflate (stand up).

a) Underline the correct information about yeast.

Yeast is a (virus, bacteria, fungus). Besides pizza dough, yeast is important in

the production of (antibiotics, wine, lemonade). (2)


b) Students made some conclusions from this experiment. State if each of the

conclusions below is True or False.

A gas produced by the yeast blows up the balloon.

Carbon dioxide gas burns with a pop.

The change observed in this experiment is reversible.

(3)

(TOTAL: 5 marks)

3. Some science students were studying blue copper sulfate crystals. They wanted to

investigate whether these crystals are soluble in water. Timothy carried out the

experiment shown below.

a) Name the apparatus labelled A and B.

A: ________________________ B: _______________________ (2)

b) What is meant by the term ‘soluble’?

_____________________________________________________ (1)

c) Name one observation Timothy could make to conclude that copper sulfate

crystals are soluble.

______________________________________________________ (1)

d) How did heating help Timothy during this experiment?

______________________________________________________ (1)


e) Timothy observed that when repeating the same

experiment using sand particles, these settled at

the bottom of the beaker. Name one conclusion

Timothy made from this experiment.

________________________________________(1)

f) Timothy and his classmates wanted to get back their blue copper sulfate crystals

and the sand particles from the water. They used methods X and Y shown below.

i) Name each method used:

Method X: __________________ Method Y: __________________ (2)

ii) Which method was used to obtain the sand particles? _____________ (1)

iii) On the diagram, label the missing parts using some words from the box

below. (4)

(TOTAL: 13 marks)

evaporating dish, filtrate, residue, solvent, filter paper, boiling tube


4. The diagram below shows an outline of the Periodic Table of Elements.

a) Name the element with the symbol H. ___________________________ (1)

b) What is the advantage of using symbols?

__________________________________________________________ (1)

c) Iron is a metal. 2 kg of iron are melted and poured into a mould to make an

iron star as shown in the picture below.

i) What is the mass of the iron star? __________________________

ii) What is the weight of the iron star? ________________________ (2)

d) During this process, liquid iron cooled down to become a solid.

i) Is this an example of a physical or a chemical change? __________ (1)

ii) Give a reason for your answer. _____________________________ (1)

e) Iron is a metal. State one property of metals.

___________________________________________________________ (1)

f) Shade the part of the periodic table which shows metals. (1)

g) In time the iron star will rust. Complete this word equation.

iron + oxygen ______________________ (2)

h) Rust is a compound. Explain.

___________________________________________________________ (2)

(TOTAL: 12 marks)

iron star


5. On a bright sunny day, Emma walked to her grandpa’s house. As soon as she

entered the house, the room was dark.

a) The pictures below show how the size of the pupil in Emma’s eyes changes

depending on the amount of light present.

i) Which picture shows Emma’s eyes while walking in bright sunlight? ______

ii) Which part of the eye controls the size of the pupil? __________________

iii) On which part of the eye is the image formed? ____________________(3)

b) As she moved in the house, Emma saw a torch on the table. Draw arrows to show

how she could see light from the torch in the mirror. (2)

c) Inside the house, Emma could hear her grandpa talking. The steps below show

what happened in Emma’s ears to hear sounds. Put the steps in the correct order.

The first one has been done for you. (5)

The auditory nerve takes the signal to the brain.

The waves make the ear drum vibrate.

Waves travel along the ear canal.

The small bones amplify the vibrations.

The cochlea turns waves into electrical signals.

Sound waves are collected by the ear pinna. 1

(TOTAL: 10 marks)


6. The picture below shows the Earth, the Moon and the Sun. The arrows show the

direction each one is moving.

a) Write down the number in the diagram that represents the:

Earth: ___________ Sun: ___________ Moon: ____________

(3)

b) Some statements below are correct, others are wrong. Put a tick () for the

correct statements and a cross () for the incorrect ones in the table below.

(8)

Statement or

The Sun orbits the Earth.

The Earth spins on its own axis.

Night is dark because thick clouds cover the sun.

It takes 365 days for the moon to orbit the Earth.

The Earth has only 1 natural satellite.

The tilting of the Earth is responsible for seasons.

Scientists found living things on the planet Jupiter.

Mercury has a higher temperature than Venus as it is

nearer to the sun.

c) Artificial satellites are an important human invention. Give two uses of

artificial satellites.

_______________________________________________________

_______________________________________________________ (2)

(TOTAL: 13 marks)


7. As the size of the human population is increasing, the amount of carbon dioxide in

the atmosphere is increasing too.

a) Underline the human activities that contribute to an increase in the carbon

dioxide in the atmosphere. (2)

Using solar energy Cutting down trees

Burning fossil fuels Travelling using the bike

Planting new trees Reducing the use of pesticide

b) Scientists are worried about the increased levels of carbon dioxide in the air.

Explain why.

______________________________________________________________

___________________________________________________________ (2)

c) Wind energy is a renewable source of energy. It is described as an environment

friendly type of energy.

i) Define the term ‘renewable energy’.

_________________________________________________________

ii) Why is it described as ‘environment friendly’?

______________________________________________________ (2)

iii) Underline one type of non-renewable energy from the list below.

nuclear geothermal solar biofuel (1)

d) As part of the waste management campaign, the local council used the poster

below to promote the 3Rs. Fill in the diagram below. (2)


e) The picture below shows how oil spills are harmful to the sea.

List two ways how oil spills harm birds, fish and marine plants.

1._____________________________________________________________

2.__________________________________________________________ (2)

f) Name one other source of sea pollution.

___________________________________________________________ (1)

(TOTAL: 12 marks)

8. For his 50th birthday, Martin organised a party and ordered a rainbow cake and

wine bottles to celebrate with his friends.

a) Teeth are important to break down food. Name the tooth type labelled A and B

and state the function of each.


Tooth A: _________________ Function: ________________________________

Tooth B: _________________ Function: _____________________________ (4)

b) State whether each of the activities happening at the party are a physical or a

chemical change.

i) Baking the rainbow cake: _____________________________________

ii) Opening a wine bottle: ______________________________________

iii) Candle wax melting: ______________________________________ (3)

c) After the party, two children were very sick. Doctors suspected that they were

allergic to food colouring X and wanted to test if this food colouring was present in

the rainbow cake at the party. In the lab, they carried out chromatography and

obtained the result below.

i) Did the Rainbow cake contain food colouring X? _______________(1)

ii) Which food colourings are made up of 2 colours?

________________________ and __________________________(2)

(TOTAL: 10 marks)


9. Before going out on a fieldwork, the science teacher explained how students

should behave to protect the organisms in their habitat.

a) Name two actions students should avoid doing when out in the field.

______________________________________________________________

____________________________________________________________(2)

b) During the fieldwork, students observed how human behaviour can negatively

impact the environment. Underline the human behaviours that are harmful to

the environment. (4)

building rubble walls leaving BBQ litter around

cutting down trees investing in organic farming methods

overturning stones and pebbles planting flowering plants to attract bees

and butterflies

collecting broken glass from picnic

areas

replacing garigue areas with roads and

pathways

c) Buskett is a nature reserve. Write down two characteristics of a nature

reserve.

______________________________________________________________

____________________________________________________________(2)

d) Name two scientific reasons why planting trees can be useful to the

environment.

______________________________________________________________

____________________________________________________________(2)

e) During the fieldwork, students used quadrats to study plants in a field.

i) Why are quadrats not suitable to study animal populations?

_______________________________________________________(1)

ii) Quadrats should be thrown at random. Give two reasons why this is

important.

_________________________________________________________

_______________________________________________________(2)

(TOTAL: 13 marks)

year 8 integrated science time: 1h 30min€¦ · allergic to food colouring x and wanted to test if...

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