YEAR 8 SCIENCE EXAMINATION

Semester 2 2016

MULTIPLE CHOICE QUESTIONS – BOOK 1

STUDENT NAME:

TEACHER:

DATE:

Time allowed for this exam: (Book 1 and Book 2 Combined)

Reading time before commencing work: 10 minutes Working time for this paper: 1hour 50 minutes

MATERIAL REQUIRED / RECOMMENDED FOR THIS PAPER:

To be provided by the supervisor: This question and answer booklets

To be provided by the candidate:

Pens, pencils, ruler, eraser

IMPORTANT NOTE TO CANDIDATES

No other items may be taken into the examination room.

It is your responsibility to ensure that you do not have any unauthorised notes or other items of a non-personal nature in the examination room. If you have any unauthorised material with you, hand it to the supervisor BEFORE reading any further. All iPads and mobile phones must be turned off and in your bag along with any other devices and notes. Bags are to be closed and placed under the desk.

INSTRUCTION TO CANDIDATES:

• Read through the paper to familiarise yourself with all of the questions.

• Use a blue or black ballpoint / ink pen for the written answers. Use pencil for

drawing the graphs.

• Write your answers in this booklet.

• Should you require more space than you have been given please use the spare sheet

(at the back of this booklet) and ensure that you include your name and the question

/ statement to which you are responding.

AT THE END OF THE EXAMINATION:

Any planning sheets or other pieces of paper MUST be handed in with this booklet.

At the end of the examination make sure that your name is on your booklet and any other pieces of paper used.

Marks allocation:

Topic Section Marks

Biology Multiple choice

/10

Short answer /35

Chemistry Multiple choice

/10

Short answer

/35

Investigating /10

Total /100

Answer the following questions on the grid in your answer booklet

(next page)

Do not turn the page until you are asked to do so.

Circle the letter indicating the best answer.

1 A B C D

2 A B C D

3 A B C D

4 A B C D

5 A B C D

6 A B C D

7 A B C D

8 A B C D

9 A B C D

10 A B C D

11 A B C D

12 A B C D

13 A B C D

14 A B C D

15 A B C D

16 A B C D

17 A B C D

18 A B C D

19 A B C D

20 A B C D

1. Living things that are made from only one cell are called

a. Multicellular

b. Monocellular

c. Unicellular

d. Intracellular

2 The job of the mitochondria in cells is to

a. Repair cell damage

b. Store cell waste

c. Control the cell’s activities

d. Release energy

3 On the microscope, the objective lens is found on the

a. Eyepiece

b. Nosepiece

c. Mouthpiece

d. Chin piece

4 If the eyepiece lens has a magnification of 10 times, and the objective lens has a

magnification of 4 times, the total magnification is

a. 2.5 times

b. 6 times

c. 14 times

d. 40 times

5 Anton van Leeuwenhoek is credited with developing the first microscope. He worked

as a

a. Textile trader

b. Scientist

c. Doctor

d. Optician

6 Which of the following single-celled organisms is NOT a protist?

a. Bacteria

b. Amoeba

c. Sporozoa

d. Flagellate

7 The major organ of the urinary system is

a. The kidney

b. The liver

c. The pancreas

d. The gall bladder

8 Which of the following should NOT be present in your urine?

a. Water

b. Sugar

c. Urea

d. Salt

9 The male part of the flower, or stamen, consists of the

a. Petals and sepals

b. Stigma and style

c. Ovules and ovary

d. Anther and filament

10 The action of the male sex cell joining with the female sex cell is called

a. Fertilisation

b. Pollination

c. Seeding

d. Flowering

11 When a material cools down, its particles

a. Vibrate slower and make it contract

b. Vibrate faster and make it expand

c. Vibrate slower and make it expand

d. Vibrate faster and make it contract

12 My particles are in lined up in a regular repeating pattern and cannot change

position. I am a:

a. Plasma

b. Gas

c. Liquid

d. Solid

13 Sublimation is the name given to the change from:

a. Solid to liquid

b. Liquid to gas

c. Liquid to solid

d. Solid to gas

14 Which of the following is a physical change?

a. Methane burning in air

b. Magnesium fizzing in hydrochloric acid

c. Salt dissolving in water

d. Glucose releasing energy in respiration

15 Water contains 2 hydrogen atoms bonded on to 1 oxygen atom. Water is

a. An element

b. A compound

c. A mixture

d. None of the above

16 If a perfume bottle is opened at the front of the classroom, eventually people at the

back of the room can smell it. This is due to

a. Dissolution

b. Deflection

c. Diffusion

d. Distraction

17 Kim measured the temperature change during a chemical reaction. The temperature

went up. His experiment was:

a. Exothermic

b. Hyperthermic

c. Endothermic

d. Hypothermic

18 The correct way to write the chemical formula for water is

a. H2O

b. H2O

c. H2O

d. H2o

19 When the bathroom mirror steams up it is an example of

a. Melting

b. Boiling

c. Condensing

d. Freezing

20 If a material can be compressed, it means it can

a. Change its shape

b. Be squeezed into a smaller space

c. Be poured through a tube

d. Be heated to a very high temperature

END OF MULTIPLE CHOICE QUESTION BOOKLET 1

COMMENCE QUESTION AND ANSWER BOOKLET - 2

QUESTION AND ANSWER BOOKLET 2

Student Name:

1. What does each of the 7 letters stand for in the mnemonic “Mrs Gren”, and what do these 7 things have in common?

______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________

(4 marks)

2. Correctly label the diagram below with the terms – vacuole, nucleus, cell wall, cell membrane, cytoplasm and chloroplast.

(6 marks)

3. From the diagram in question 2, which cell, A or B, is a plant cell? Give one reason for your answer

______________________________________________________________________

(2 marks)

4. Using the structures named in question 2, complete the table below:

Structure Function

Controls what enters and leaves the cell

Traps light energy by photosynthesis

Gives support

Storage of water, food and wastes

Controls all cell activities

Jelly like substance containing all cell organelles

(6 marks)

Correctly name the cells pictured below from the following list: red blood cell, white blood

cell, palisade cell, guard cell, sperm cell, egg cell, root hair cell, ciliated cell.

a. b. c. d.

(4 marks)

5. For 2 of the cells you have named in question 5, describe the job they do, what specialized feature(s) they have and how this helps them do their job.

_Cell 1:________________________________________________________________

______________________________________________________________________

______________________________________________________________________

______________________________________________________________________

_Cell 2:________________________________________________________________

______________________________________________________________________

______________________________________________________________________

______________________________________________________________________

(6 marks)

Your body loses water through breathing, sweat and urine. Water in your breath is a waste

product from energy released in your cells. Sweat is produced to cool you down. Your

urinary system controls the amount of water in your body.

If you play sport on a warm day will you produce more or less urine? Give 2 reasons

for your answer.

______________________________________________________________________

______________________________________________________________________

______________________________________________________________________

______________________________________________________________________

______________________________________________________________________

(5 marks)

6. State 2 major differences between sexual and asexual reproduction

______________________________________________________________________

______________________________________________________________________

(2 marks)

7. Complete the table below about the 3 states of matter, by underlining the correct term

State Volume Shape Speed of particles

Solid Fixed/not fixed Fixed/not fixed Slow/faster/fastest

Liquid Fixed/not fixed Fixed/not fixed Slow/faster/fastest

Gas Fixed/not fixed Fixed/not fixed Slow/faster/fastest

(9 marks)

8. The railway track in the photograph twisted and buckled on a hot summer day

The tracks expanded in the heat.

a. What does expanded mean?

______________________________________________________________________

(1 mark)

b. Explain, by referring to the speed of vibration of particles, why materials expand when they are heated.

______________________________________________________________________

______________________________________________________________________

______________________________________________________________________

(3 marks)

c. What should the workmen have done, when they were laying the track, to prevent the track from buckling? Explain your answer.

______________________________________________________________________

______________________________________________________________________

(2 marks)

9. Alice and Joanne placed a piece of metal in a test tube of liquid and made 5 observations about the reaction they witnessed, which they recorded in the table below:

Observations Results

Start Finish

Temperature 23C 45C

Colour Colourless Colourless

Liquid Clear Clear

Piece of metal Can be seen Can’t be seen

Air above test tube No smell Strong smell

a. Did Alice and Joanne observe a physical reaction or a chemical reaction?

______________________________________________________________________

(1 mark)

b. Which two observations in the table support your answer to part a? Explain why.

______________________________________________________________________

______________________________________________________________________

______________________________________________________________________

______________________________________________________________________ (4 marks)

c. Chemical reactions can be classified into different types. Draw lines to connect the reaction type with the correct description:

Reaction Type Description

Combustion 2 or more reactants join together to form 1 product Decomposition burning Combination 1 reactant splits into 2 or more products Precipitation soluble reactants form an insoluble product

(4 marks)

d. In a combustion reaction, what element is always present as one of the reactants?

______________________________________________________________________

(1 mark)

10. The diagrams below represent the arrangement of particles in four different gases. In the space below, correctly identify each one as either an element, a compound or a mixture.

A. __________________________

B. __________________________

C. __________________________

D. __________________________ (4 marks)

11. Write word equations for each of the following reactions: a. Hydrogen reacts with oxygen to produce water.

_______________________________________________________________ (2 marks)

b. Methane reacts with oxygen to produce carbon dioxide and water

_______________________________________________________________ (2 marks)

c. Hydrochloric acid reacts with sodium hydroxide to produce sodium chloride and water.

_______________________________________________________________ (2 marks)

12. Dennis and Zoe were investigating the reaction between hydrochloric acid (HCl) and magnesium (Mg). This reaction produces magnesium chloride (MgCl2) and hydrogen (H2). They wanted to see what effect changing the concentration of acid had on the rate

of the reaction. They measured the rate of reaction by timing how long it took to

collect 10mls of hydrogen. Their results are in the table:

Acid Concentration (M) Time to collect H2 (s)

0.1 77

0.5 15

1.0 12

2.0 4

4.0 2

a. What was the independent variable in this investigation?

______________________________________________________________________

(1 mark)

b. What was the dependent variable in this investigation?

______________________________________________________________________

(1 mark)

c. Suggest 2 things Dennis and Zoe would need to keep the same to ensure that this was a fair test

______________________________________________________________________

______________________________________________________________________

(1 mark)

d. On the grid provided, draw a graph of these results (over the page)

(5 marks)

e. Which test produced an anomalous result?

______________________________________________________________________

(1 mark)

f. What should Dennis and Zoe have done to get more reliable results?

______________________________________________________________________

(1 mark)

END OF EXAMINATION

Spare page Name Date

(Number question/s if using this page)