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
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