BJC General ScienceYear 2015

Paper 1 & 2

DISCLAIMER

This document consist of scanned copies of the BGCSE and/or BJC past papers produced by the Bahamas

Ministry of Education. The Student Shed accepts no responsibility or liability for the contents within this

document, including but not limited to; answers that may be highlighted, missing papers or missing

questions.

It is the sole responsibility of the user to determine the correct and most suitable answers for each

question contained therein.

0047 nFOR EXAMINER' S,USE ONLY

TOTAL MARKS

BJC

lL- -SCHOOLNo. CANDIDAIE No.

NITIALS SURNAME

I

I

-II-=I

I

II

-I

MINISTRY OF EDUCATIONBAHAMAS J UNIOR CERTIFICATE

EXAMINATION

OO47 GENERAL SCIENCEpApE R 1 (Mul,rrt_rrEM.rfI]i cE Q uE s rroN s)

Friday 29 May 2015 1:00 p.M.-2:00 p.M.

INSTRUCTIONS TO CANDIDATES

Do not open this booklet until you are told to do so.

Write your school number, candidate number, sumame and initials in the spaces provided at the top right handside of this page.

For each question, there are four suggested answers A, B, C, and D. When you have selected an answer to aquestion, circle the letter by the answer which you have chosen.

Answer ALL the questions in this booklet. Do any necessary rough work and calculations in your booklet.

This question paper consists of 10 printed pages.

l Which drawingrshows a measuring cylinder?

2. Which part of the microscope allows light onto the slide so that the specimen may be seen?

Which science is the study of plants?

A archeologyB biologyC botanyD zoology

Which cell is the most important in human reproduction?

--\<_

3.

4.

A

5.

3

The diagram shows the basic structures of a cell.

Which structure contains chlorophyll?

How are microscopic, one-celled animals classified?

A arthropodB coelenterateC echinodermD protozoan

Which organisms break down dead or decaying matter?

6.

7.

8. Which ofthe following is not a form of precipitation?

ABCD

ABCD

consumersdecomposersfarmersproducers

groundwaterhailstonesleetsnow

9. What happens to water vapour as it moves upward into the afrnosphere?

A cools, condenses, form cloudsB evaporates into gasC gains more heat energyD reflects sunlight

10. Which

ABCD

4

instrument is used to measure wind speed?

anemometerrain gaugethermometerweather vane

The scent of a gel air freshener spreads throughout a room.

What is this process called?

A evaporationB diftusionC osmosisD transpiration

Which picfure shows an example of a chemical change taking place?

AB

Which process is taking place when dew forms?

A condensationB evaporationC transpirationD precipitation

How does heat from the Sun travel through space?

A conductionB convectionC decompositionD radiation

Which of the following is an example of a mild acid?

11.

12.

C

13.

14.

15.

CA

5

16. The ball and ring apparatus is used to demonstrate the effect of heat on metals.

Which phrase describes what happens to the metal ring after heating?

contracts and ball passes throughexpands and ball does not pass throughexpands and ball passes throughremains the same as before heating

t]. Which metal is the best conductor of both heat and electricity?

18. Which element is a noble gas?

CONeNo

19. Which statement is true of a solution?

solute dissolves in solventsolvent dissolves in solutesolute is always a solidsolvent is always a liquid

ABCD

ACuBFeCPbDMg

ABCD

ABCD

20.

6

What are low lying clouds that cover most of the sky called?

A cimrsB cumulus

nimbusstratus

2t. Which of the following does not cause weathering?

CD

ABCD

plant rootssoil particleswaterwind

22. Which animal is not protected in The Bahamas?

AB

Which Bahamian endangered species is a reptile?

Hutia

AB

Which row describes how the human body is

A cells -) tissues -+ organsB cells -+ organs -+ tissuesC man -+ systems -+ organsD man -+ cells -+ tissues

D

L3-

Iguana/-.}--\- \+>I#\vtv

C

24. organised?

-+ systems--) man-+ tissues-+ organs

mansystemscellssystems

-+-+-+-+

Flamingo

Abaco parrot

26.

27.

28.

7

25. Which force causes tlre threads of a car's tyres to becorne smooth or wom?

A frictionB gravityC magnetismD pressure

Awoman uses a simple machine to do work.

Which example of a simple machine i. s6s using?

leverincline planepulleywheel and axle

What is the unit of electric cur-rent?

A AmpereB OhmC VottD Watt

Which pair of magnets will attract each other?

C

The diagram shows different shapes of glass.

Which shape will cause light rays to converge?

ABCD

BA

D

29_

!A

XB

fi\JD

N S S s

N N S S

30.

8

The diagram shows a glass rod in a beaker of water. The rod appears bent in the water.

What is the name of this process?

absorptiondispersionreflectionrefraction

What is the equation for finding the speed of an object?

A speed : distance + timeB speed : distance X timeC speed : distance * timeD speed : distance - time

32. In an experiment on sound, two students investigate how sound travels using the device shown.

What causes the sound to travel from A to B?

vibrations of the boy's handvibrations of the girl's handvibrations of both handsvibrations of the string

The diagram shows the pH scale.

Which number indicates that the substance tested is pure water?

0123456789101112t314

ABCD

31.

ABCD

55.

DA

34.

9

The diagram shows a soil profile.

Which layer contains the most organic material?

Which object is not a natural part

A EarthB MoonC SatelliteD Venus

The diagram shows a ray of light as it strikes a mirror.

What is the process shown?

incident ray

absorptiondispersionreflectionrefraction

35. of the solar system?

36.

reflected ray

ABCD

normal

mirror

l0

37. A softball player hits a ball with a force of 5 N into the outfield. The ball travels a distance of 200 m.

How much workwas done?

100 J375 J750 I

1 000J

An athlete is running at a speed of 10 m/s. She runs a distance of 500 m.

How long did it take for the athlete to run this distance?

15s25s50s75s

39. Which term means a state of complete mental, social and physical well-being?

ABCD

38.

ABCD

ABCD

diseasefitnesshealthhygiene

40. What is the cause ofAIDS?

bacterial infeotionfungal infectionHIV viral infectionyeast infection

ABCD

FOR EXAMINER'S USE ONLY

QUESTION MARK

I

2

J

4

5

6

TOTAL

T

0047 t2 BJC

SCHOOLNo. CANDIDATE No.

INITIALS SURNAME

MINISTRY OF EDUCATIONBAHAMAS JUNIOR CERTIFICATE

EXAMINAT!ON

OO47 GENERAL SCIENCE

PAPER 2 STRUCTURED QUESTTONS(60 Marks)

Friday 29 N4ay 2015 2:15 p.M.-3:15 p.M.

INS TRUCTIONS TO CANDIDATES

Do not open this booklet until you are told to do so.

Write your school number, candidate number, surname and initials in the spaces provided at the top right handside of this page.

Answer ALL questions in the spaces provided.

I

II

I

-

= This question paper consists of11 printed pages and I blank page.

l.

2

The diagram shows the structures of a plant labelled A, B, C and D'

(a) (i) Complete the table by filling in the blank spaces.

letter function

A

absorbs water with dissolved minerals

C

(ii) There are four basic groups in the plant kingdom. Classiff this plant by naming the

group to which it belongs.

tll

(iiD Identify and name TWO structures which could be used to classifu this plant.

1.

2.

t3l

l2l

aJ

(b) All living things are classified based orr characteristics.

List and describe TWO characteristics of all living'things.

chamcteristic deseription

t2t

Lzl

Total marko [10]

2.

4

The diagram shows the apparatus set up for the separation of a mixture.

(a)

glass rod

mixture

filter paper

I

filter funnel

(i)

(ii)

Name the process shown in the diagram.

The mixture in the beaker before separation is soil and water.

Name the TWO parts of the mixture labelled I and2, after separation. (DO NOT use

soil or water)

1

2

(iii) Define a mixture.

(iv) State how the water can be made safe for drinking.

t1l

l2l

tll

l1l

(b)

5

The diagram shows the stages in the water cycle.

(i)

(ii)

Name the processes taking place at stages A and B.

process A

process B

Water released from the clouds in the form of rain, hail, snow or sleet is an importantstage in the water cycle.

Name this process which takes place at stage C in the water cycle.

(i)

( ii)

Name the form of energy needed for the process at stage A.

State the main source of this form of energy.

Total marks [10]

l2l

t1l

ttl

tll

(c)

water vapour

6

3. The diagram shows some ofthe organisms found in a coral reef ecosystem.

(a) (i) On the diagram, use an X to identifr a coral. tll(iD Give the name of TWO vertebrates and TWO invertebrates shown in the diagram.

invertebrates vertebrates

(i) Define the word ecology.

t4l

(b)

12)

(ii) Explain briefly why ecolory is a branch of biology.

I2l

(c) Give ONE way scuba divers can damage coral reefs.

t1l

[101Total marks

7

4. The diagram shows the framework of the human body and the location of three body cavities labelledX,Y andZ.

Name this system and give ONE function of this system.

name

function

Identify the specific structures labelled v and w.

v

The diagram shows THREE major body cavities labelled X,Y andZ.

Name ONE organ found in each of the cavity labelled X, y and Z.

x

I.f"

I

(D(a)

(ii)

(iii)

t2)

l2l

t3t

Y

Z

(i) Give the name of TWO minerals which

1.

keep bones and teeth strong and healthy.

l2l2.

ttl

Total marks [101

(b)

(iD State the number of bones in the human body.

5.

8

The chart shows the main eomposition of the Earth's air.

(a) Statethe gas needed forthe processes ofphotosynthesis and combustion.

t1l

(b) Namethe gas which

(i) makes drinks fizzy

(ii) is converted into nitrates

(c) (i) Name the gas which combines with food nutrients to produce energy.

(ii) Name

l2l

lll

gas

the gas that is a compound and give a reason for your answer.

reason

lll(d) The condition of the air surrounding the Earth may be hot or cold, wet or dry calm or stormy,

clear or cloudy.

(i) Name the layer of air surrounding the ea(h.

t1l

(ii) What is the name given to the condition of the air surrounding the Earth?

ttl

9

(e) The diagram shows an experiment to investigate the effect of heat on gases.

(D Briefly describe what happens to the movement and spacing of the air molecules whenthe heat from the hair dryer heats up the air in the flask.

movement

(ii) Briefly describe what will be observed in the water.

(iii) Write ONE sentence as a conelusion for this investigation.

Total marks [0]

spacing lll

tll

tll

l0

This question is about electricity.

(a) (i) Define the term current electricity.

l2l

Electricity is a convenient form of energy. Many appliances convert electricity into other usefulforms of energy.

(ii) State the main form of energy these appliances convert electrical energy into.

electrical appliance converts electrical energy into

door bell

t1l

tll

tll

?

rfiwater kettle

reading lamp

11

(b) The diagram shows a simple electric circuit drawn without using electrical symbols.

(i) Give the letter and name of the part which conducts electricity around the circuit.

letter name

The part labelled W is a paper clip.

Give the function of W in an electrical circuit.

function

(iii) Complete the table by drawing the electrical symbols for the components labelledX and Y.

letter symbol

w

x

Y

Y

tll(i i)

tll\ry,

t3l

Total marks [10]