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18FY10EBasicScienceAB

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Number:
MINISTRY OF EDUCATION
FIJI YEAR 10 EXAMINATION 2018
BASIC SCIENCE
ANSWER BOOKLET
HAND IN THIS ANSWER BOOKLET TO THE
SUPERVISOR BEFORE YOU LEAVE THE
EXAMINATION ROOM.
Mark
Gained:
COPYRIGHT: MINISTRY OF EDUCATION, FIJI, 2018.
2.
SECTION A
MULTIPLE-CHOICE QUESTIONS
[30 marks]
1
A
B
C
D
16
A
B
C
D
2
A
B
C
D
17
A
B
C
D
3
A
B
C
D
18
A
B
C
D
4
A
B
C
D
19
A
B
C
D
5
A
B
C
D
20
A
B
C
D
6
A
B
C
D
21
A
B
C
D
7
A
B
C
D
22
A
B
C
D
8
A
B
C
D
23
A
B
C
D
9
A
B
C
D
24
A
B
C
D
10
A
B
C
D
25
A
B
C
D
11
A
B
C
D
26
A
B
C
D
12
A
B
C
D
27
A
B
C
D
13
A
B
C
D
28
A
B
C
D
14
A
B
C
D
29
A
B
C
D
15
A
B
C
D
30
A
B
C
D
30
© MINISTRY OF EDUCATION, FY10E 2018: BASIC SCIENCE.
3.
SECTION B
SHORT ANSWER QUESTIONS
[60 marks]
There are 6 questions in this section. Answer all the questions.
Each question is worth 10 marks.
QUESTION 1
(a)
(10 marks)
The diagram below shows a toad ready for dissection.
Source: https://thechroniclesofgrade7.wordpress.com
(i)
Name the chemical substance required to make the toad unconscious.
________________________________________________________________________
(1 mark)
(ii)
Name and state the use of two other equipment needed for
toad dissection.
Name:______________________________
Use:____________________________________________________________________
Name:_______________________________
Use:____________________________________________________________________
(4 marks)
Turn Over
© MINISTRY OF EDUCATION, FY10E 2018: BASIC SCIENCE.
4.
SECTION B
(b)
(continued)
Complete the table for three types of food test below. Wherever required,
identify the substance tested, the indicator and the positive results obtained.
Test for
(i)
indicator
Positive result
(ii)
iodine
(iii)
glucose
Brick red colour
(v)
(iv)
Biuret solution
(5 marks)
10
© MINISTRY OF EDUCATION, FY10E 2018: BASIC SCIENCE.
5.
QUESTION 2
(10 marks)
(a) The graph below shows some of the components of air during
breathing.
Gases in the air inhaled and exhaled
in
out
21%
in
out
in
out
4%
17%
high
in
out
78%
78%
low
0.04%
oxygen
Carbon dioxide
water
nitrogen
Source: http://search.tb.ask.com
(i) Calculate the percentage of oxygen absorbed into the blood after
breathing in air.
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
(1 mark)
(ii) Explain the difference in the concentration of oxygen and carbon
dioxide in the inhaled (taken in) and exhaled (taken out) air?
Oxygen ______________________________________________________________________
_______________________________________________________________________________
Carbon dioxide _______________________________________________________________
(b)
_______________________________________________________________________________
(2 marks)
State the role of diaphragm muscles during inhaling.
_______________________________________________________________________________
_______________________________________________________________________________
(c)
_______________________________________________________________________________
(1 mark)
State an effect of cigarette smoking on the lungs.
_______________________________________________________________________________
_______________________________________________________________________________
(1 mark)
Turn Over
© MINISTRY OF EDUCATION, FY10E 2018: BASIC SCIENCE.
6.
SECTION B
(d)
(continued)
The diagram below shows a food chain from a grassland ecosystem.
Source: http://search.tb.ask.com
(i) Identify the following organisms from the food chain above.
Autotroph
Secondary consumer
Herbivore
(3 marks)
(ii) Describe any two conditions of the benthic zone of the ocean
ecosystem.
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
(2 marks)
10
© MINISTRY OF EDUCATION, FY10E 2018: BASIC SCIENCE.
7.
QUESTION 3
(a)
(10 marks)
Blood is a mixture of red blood cells, white blood cells and platelets.
Apart from colour state two ways in which red blood cells differ from
white blood cells.
1._____________________________________________________________________________
_______________________________________________________________________________
2._____________________________________________________________________________
_______________________________________________________________________________
(2 marks)
(b)
Heart attack is one of the major causes of death in Fiji.
(i)
(ii)
(c)
Identify a cause of heart attack.
______________________________________________________
(1 mark)
State a prevention for heart attack.
______________________________________________________
(1 mark)
The diagram below shows the first 20 elements of the periodic
table. Use the information in the diagram to answer the
questions that follow.
I
VIII
H
II
Li
Be
IV
V
B
C
N
Na Mg Al
Si
P
K
III
VII
He
O
F
Ne
S
Cl
Ar
VI
Ca
Source: http://search.tb.ask.com
(i)
The elements that are located in the shaded area of the table
are known as Group II elements.
What other name is given to the elements of this group?
______________________________________________________
(1 mark)
Turn Over
© MINISTRY OF EDUCATION, FY10E 2018: BASIC SCIENCE.
8.
SECTION B
(ii)
(continued)
State a general property of this group of elements.
_______________________________________________________________________________
_______________________________________________________________________________
(1 mark)
(d)
Use the diagram of a pencil given below to answer the questions
that follow.
Y
Source: http://search.tb.ask.com
(i)
Name the non-metal Y used for writing in pencil.
______________________________________________________________________________
(1 mark)
(ii)
State a physical property of the non-metal named in (i) above.
______________________________________________________________________________
(1 mark)
© MINISTRY OF EDUCATION, FY10E 2018: BASIC SCIENCE.
9.
(e)
Metal
Iron
We use different metals for different purpose as they have different properties.
Complete the table below.
Property
One use
(i)
Strong and durable (lasts
long)
Lead
(ii)
Fishing line sinkers, batteries.
(2 marks)
10
Turn Over
© MINISTRY OF EDUCATION, FY10E 2018: BASIC SCIENCE.
10.
SECTION B
(continued)
QUESTION 4
(10 marks)
Refer to the picture of cooking egg below to answer the questions that follow.
Source: http://search.tb.ask.com
(i)
State the type of change shown above.
_______________________________________________________________________________
(1 mark)
(ii)
State a property of the change mentioned above.
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
(1 mark)
(b)
Balance the following chemical equation which shows Magnesium
reacting with oxygen to form magnesium oxide.
Mg
+
O₂
MgO
(1 mark)
(c) State why the following combustion reaction is an example of
oxidation reaction.
4Fe +
3O2
2Fe2O3
_______________________________________________________________________________
(1 mark)
© MINISTRY OF EDUCATION, FY10E 2018: BASIC SCIENCE.
11.
(c)
Use the information given below to write the electron configuration
of Sulphur.
32
16
S
_________________________________________________________________ (2 marks)
(d)
Long-sighted people cannot focus the image on the retina.
Explain how this problem can be corrected.
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
(2 marks)
(e)
A group of students are given a coil of copper wire (solenoid) and a
bar magnet. Describe how energy (electricity) can be produced using
the coil of copper wire and a bar magnet.
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
(2 marks)
10
Turn Over
© MINISTRY OF EDUCATION, FY10E 2018: BASIC SCIENCE.
12.
SECTION B
(continued)
QUESTION 5
(a)
(10 marks)
Draw a circuit diagram using a battery, copper wires and
three light bulbs connected in a parallel circuit.
(3 marks)
(b)
(i) Joanna’s family uses four 15 watts energy saver light bulbs for
10 nights. The light bulbs are switched on for five hours each
night. Using the information provided to calculate the total
electricity consumed by 4 light bulbs in 10 nights.
[Show your working]
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
(3 marks)
(ii)
Calculate the cost of electricity consumed by the four 15 watt light
bulbs in 10 nights if the cost of one unit of electricity costs 45 cents.
1 Unit = 1 kilowatt hour = 1000 watt hour
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
(2 marks)
© MINISTRY OF EDUCATION, FY10E 2018: BASIC SCIENCE.
13.
(c)
State two ways in which a gear system (gears) can make our work
easier.
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
(2 marks)
10
QUESTION 6
(a)
(10 marks)
Calculate the average speed of a car which travels 120 kilometres
in four hours.
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
(2 marks)
(b)
Climate change has become a major issue affecting the planet earth.
(i)
State two causes of climate change.
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
(2 marks)
Turn Over
© MINISTRY OF EDUCATION, FY10E 2018: BASIC SCIENCE.
14.
SECTION B
(ii)
(continued)
State two ways of mitigating the effects of climate change.
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
(2 marks)
(c)
Rise in sea level is becoming a major problem for low-lying countries.
(i) Describe two processes that lead to rise in sea levels.
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
(2 marks)
(ii)Describe two ways in which people living in low-lying areas
can adapt to the rising in sea levels.
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
(2 marks)
10
© MINISTRY OF EDUCATION, FY10E 2018: BASIC SCIENCE.
15.
SECTION C
ESSAY
[10 marks]
QUESTION
NUMBER
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_____________________________________________________________________________________
_____________________________________________________________________________________
Turn Over
© MINISTRY OF EDUCATION, FY10E 2018: BASIC SCIENCE.
16.
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_____________________________________________________________________________________
Intro
1
Content
8
Conc.
1
THE END
_______________________________
COPYRIGHT: MINISTRY OF EDUCATION, FIJI, 2018.
10
INDEX NUMBER
BASIC SCIENCE
FOR MARKER’S USE
Sect. &
Ques.
No.
A
B1
B2
B3
B4
B5
B6
C
Total
Mark
Check
Gained Mark
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