AUCKLAND GRAMMAR SCHOOL
FORM 4 SCIENCE
T4 2021
Multi-choice Questions & Data Book
NAME: …………………………………..………
FORM: …….…… TEACHER: ……………..……….
Time allowed: 2 hours.
Booklet 1 of 2
Total marks: 40 Multi-choice + 90 Long Answer = 130.
INSTRUCTIONS
Use only a blue or black pen. Do not use red or green ink anywhere in this paper.
Correction fluids and highlighters are prohibited.
You may use a pencil for diagrams. Use a rubber to erase any mistakes.
Write your answers in the spaces provided on the question paper.
Universal constants, some formulae, table of ions, the reactivity series, solubility
rules and a periodic table is provided in Booklet 1 which contains the Multi-choice
Questions.
Answer all questions. The number of marks for each question is given in brackets [ ]
at the end of each question or part question.
Auckland Grammar School – Form 4 Term 4 Science Examination – 2021
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Data, Formulae and Table of Ions Sheet
Data
Acceleration of free fall,
g = 10 m s–2
Formulae
Pressure on surface,
𝑃𝑃 =
Density,
ρ=
Moment of Force (Torque),
𝐹𝐹
𝐴𝐴
Power = Voltage x Current (P=VI)
𝑚𝑚
𝑉𝑉
Voltage = Current x Resistance (V=IR)
Speed of an object,
M = 𝐹𝐹𝑑𝑑⊥
Newton’s Second Law of motion,
F = ma
𝑣𝑣 = 𝑢𝑢 + 𝑎𝑎𝑎𝑎
Reactivity Series
K
Na
Ca
Mg
Al
Zn
Fe
H
Cu
Ag
Au
Table of Ions
Solubility Rules
The table summarises whether common ionic compounds are soluble or insoluble in water.
Soluble
All common sodium, potassium and ammonium salts
All nitrates
Most common chlorides
Most common sulfates
Sodium carbonate, potassium carbonate,
ammonium carbonate
Sodium hydroxide, potassium hydroxide,
ammonium hydroxide
Insoluble
Silver chloride, lead chloride
Lead sulfate, barium sulfate, calcium sulfate
Most common carbonates
Most common hydroxides
Auckland Grammar School – Form 4 Term 4 Science Examination – 2021
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Auckland Grammar School – Form 4 Term 4 Science Examination – 2021
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Answer the following Multi-choice Questions using the answer grid located in Booklet 2.
1. Paul measured his height on his birthday every year for ten years.
Which graph best measured his results?
2. Which of these four symbols is the most dangerous for humans?
(A)
(B)
(C)
(D)
3. Leto tested three types of fertiliser on his grass. He found that Greensoil gave him the greenest
and fastest growing grass.
He decided to use it on his lemon trees as well since it was the most effective.
What did Leto fail to do, that made his decision unscientific?
(A) he did not test enough types of fertiliser.
(B) he did not repeat the test over several years.
(C) he did not have a method to measure how green his grass was.
(D) he did not test the fertilisers on different types of plants.
Auckland Grammar School – Form 4 Term 4 Science Examination – 2021
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The volume of air in a person’s lungs was measured for 1 minute while they were breathing
normally. The volume of air was then measured while the person took deep breaths for 30 seconds.
The results are shown in this graph.
4. How many times did the person inhale in the first 20 seconds?
(A) 4
(B) 5
(C) 10
(D) 15
5. What was the greatest difference in air volume inhaled between normal breathing and deep
breathing?
(A) 1.3 L
(B) 2.0 L
(C) 2.3 L
(D) 4.9 L
When our cells break down food nutrients to make energy, carbon dioxide (CO2) and water (H2O)
are produced and released into the air by exhaling. In a spacecraft, devices are needed to remove
the CO2 and H2O from the air and to produce oxygen (O2) so astronauts can breathe.
The International Space Station uses a technology employing reusable molecular sieves.
6. Which statement about this technology is correct?
(A) both CO2 and H2O are used to generate O2.
(B) H2O and CH4 are used to generate O2.
(C) all products of CO2 reaction are vented into space.
(D) all products of H2O reaction are vented into space.
7. What is the function of the molecular sieve shown in the diagram above?
(A) generating CO2
(B) separating CO2 and H2O
(C) starting the reaction between CO2 and H2
(D) containing the reaction between CO2 and H2O.
Auckland Grammar School – Form 4 Term 4 Science Examination – 2021
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Vladimir read the following definition of osmosis in a textbook:
“the movement of water from a region of lower salt concentration to a region of higher salt
concentration through a semi-permeable membrane until the concentrations are equal”
Red blood cells have a salt concentration of approximately 0.9% and are surrounded by a semipermeable membrane. Fresh water has a salt concentration of approximately 0.5% and sea water
has a salt concentration of approximately 3.5%
Vladimir placed the red blood cells into fresh water and into sea water.
8. What will happen to the red blood cells in each water sample?
9. The diagram below represents part of the Periodic Table. In this part of the Periodic Table, the
atomic numbers follow a pattern. As you move from left to right across a horizontal row, the atomic
number increases by one with each element. As you move down a vertical column, the atomic
number follows a different pattern.
Based on the information in the diagram, Se has an atomic number
that is:
(A) 8 less than Te
(B) 8 more than Ga
(C) 18 more than S
(D) 18 less than Xe
10. Isotopes of an element are atoms with the same number of protons but differing numbers of
neutrons in the nucleus. Carbon has several isotopes. One of them is carbon-14 represented as
14
6𝐶𝐶, where 6 is the number of protons and 14 is the total number of protons and neutrons in the
nucleus of the atom. Oxygen has three isotopes, oxgen-16( 168𝑂𝑂), oxygen-17( 178𝑂𝑂), and oxygen 18
( 188𝑂𝑂).
How many neutrons are there in the nucleus of each of these isotopes?
Auckland Grammar School – Form 4 Term 4 Science Examination – 2021
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11. During chemical reactions, the particles of substances recombine to form new substances.
Silver tarnishes when it reacts with sulfur in the air, creating a black layer of silver sulfide.
Jessica cleaned her tarnished silver necklace by dipping it into a solution of baking soda and salt in
a container lined with Aluminium foil. In this reaction the aluminium displaced silver from silver
sulfide to form aluminium sulfide. Leaving the silver metal free.
Which option represents this chemical reaction?
12. A chemical formula can be used to show the number and types of atoms in a compound. A
number of compounds and their formula are listed in the following table.
These diagrams show four sets of shapes. Each shape represents one atom and each set
represents the composition of one compound in the table above.
Which option matches each set of shapes with compound in the table that it represents?
Auckland Grammar School – Form 4 Term 4 Science Examination – 2021
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13.Thufir added aluminium pellets to a beaker containing water. The diagrams show the level of the
water and the total mass before and after he added the pellets.
𝑚𝑚𝑚𝑚𝑚𝑚𝑚𝑚
The density of an object is given by the formula: density = 𝑣𝑣𝑣𝑣𝑣𝑣𝑣𝑣𝑣𝑣𝑣𝑣
Using the information above, what is the density (g/cm3) of the aluminium pellets?
(A)
0.1
(B)
0.4
(C)
2.7
(D) 6.8
14. During a baseball game some students used a radar gun to measure the speed of the ball after
it has been pitched and the speed of the tip of the bat just before it hit the ball.
They measured the speed of the ball to be 120 km/h and the speed of the tip of the bat to be 45
km/h. At what speed did the ball and bat approach each other?
(A)
45 km/h
(B)
75 km/h
(C) 120 km/h
(D) 165 km/h
15. Gurney was investigating how long it takes him to walk different distances. He walked along a
straight line drawn on the ground. With a stopwatch and tape measure he recorded his position on
the line at different times.
The position-time graph summarises his measurements.
How long did Gurney stand still
during his investigation?
(A) 5 seconds
(B) 6 seconds
(C) 11 seconds
(D) 18 seconds
Auckland Grammar School – Form 4 Term 4 Science Examination – 2021
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The force of gravity acts on all objects.
Mohiam used strobe photography to record the motion of a ball failing under the influence of gravity.
In a dark room she dropped a ball in front of a board with markings. A powerful light flashed 10
times per second. This made the position of the ball visible at times that were 0.1 seconds apart.
The diagram illustrates her results.
16. Mohiam wants to change her experiment so that her results will be
more accurate. Which of the following is the best way to achieve this?
(A) use a larger ball
(B) use a white ball instead of a yellow one
(C) make the light flash once every second
(D) draw more closely spaced markings on the board
17. The distance (s) that a free-falling ball will fall in a time of t seconds
is given by the equation
s = u x t + ½ x g x t2
How far (in metres) would the ball have fallen in 2 seconds if it had
been dropped from rest?
(A) 9.8
(B) 19.6
(C) 96.04
(D) 192.08
18. Alia made a mobile using her knowledge of the equilibrium of forces.
The distance shows the mobile she has constructed. The values of all masses are given in grams
and all distances are in centimetres. Her mobile is balanced, as all sections are in equilibrium.
What is the value of mass ‘X’ in grams?
(A) 10
(B) 20
(C) 80
(D) 320
Auckland Grammar School – Form 4 Term 4 Science Examination – 2021
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19. A biomass pyramid shows the total mass of organisms at each stage of an ecosystem’s food
chain. The diagram shows the relative biomass of producers (plants), herbivores and carnivores in
an ecosystem.
The amount of available energy at each level decreases as you go up the biomass pyramid.
Why does the biomass pyramid show a greater mass of plants than animals?
(A) plants have many leaves which create a greater mass.
(B) plants must provide enough energy to support all levels above them.
(C) plant growth covers an area larger than the area in which animals live.
(D) most animals in an ecosystem are small so they do not have a large mass.
20. The diagram shows a food web in an ecosystem.
A predator is an animal that preys on and eats another animal.
In this ecosystem how many organisms do NOT have predators?
(A) 1
(B) 2
(C) 3
Auckland Grammar School – Form 4 Term 4 Science Examination – 2021
(D) 4
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21. High salinity is an environmental issue in many regions. It is often caused by the water table
rising, bringing salt to the surface.
The diagram shows the water table of two environments.
Which of the following is an observation from the diagram?
(A) farm crops do not use as much water as native trees.
(B) planting farm crops has caused the water table to rise.
(C) the roots of native trees keep the water table lower than the roots of farm crops.
(D) the water table is higher in areas with farm crops than in areas with native trees.
22. The pH of a substance is a measure of how acidic or basic a substance is. Indicators are
chemicals that can be used to measure the pH. The indicator is added to a solution of the substance
and the final colour shows the pH range for that substance.
The chart shows the colour of some indicators at different pH values.
A solution with pH 5 is tested with phenol red indicator.
What will be the final colour of phenol red in this solution?
(A) red
(B) blue
(C) yellow
Auckland Grammar School – Form 4 Term 4 Science Examination – 2021
(D) colourless
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Duncan wanted to see how water temperature affects the amount of sugar that can be dissolved in
water. He added 100mL of water of different temperatures to four identical beakers.
He then added one measured teaspoon of sugar at a time to each beaker and stirred until all the
sugar dissolved. He repeated this until no more sugar would dissolve in each beaker.
23. Which variable should be recorded as the result in this investigation?
(A) the number of beakers used.
(B) the amount of water in each beaker
(C) the temperature of the water in each beaker
(D) the amount of sugar that can be dissolved in each beaker
24. Which hypothesis could be tested by this investigation?
(A) the amount of water affects how much sugar dissolves.
(B) the longer you stir the sugar, the quicker it dissolves.
(C) the more sugar that is added, the slower it dissolves.
(D) the amount of sugar that dissolves depends on the temperature of the water.
25. Light globes glow when enough electricity flows through them. Electricity can flow if there is an
unbroken path for it to follow. An open switch breaks the path. The diagram represents an electrical
circuit that Yueh has wired up. The dry cell provides enough energy to make all the light globes
glow. All switches are open.
Yueh wants to make only
light globe R glow.
What does he need to do this
to achieve this?
(A) close switch 3 only
(B) close switches 1 & 3 only
(C) close switches 2 & 3 only
(D) close switches 3 & 4 only
Auckland Grammar School – Form 4 Term 4 Science Examination – 2021
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26. Electricity can flow when it has a source of energy (like a battery) to force it around an unbroken
path (a circuit). The parts making up a circuit, (such as resistors, R) can be connected:
•
•
in series, where they form a single path and each resistor carries the same current (I), or
in parallel, where they form separate paths and each resistor has the same voltage (V)
across it.
Feyd-Rautha wired up the circuit shown in the diagram below.
Which option correctly lists two resistors that are in
series and two resistors that are in parallel?
27. The melting point of a substance is the temperature at which it changes from a solid to a liquid.
The boiling point of a substance is the temperature at which it changes from a liquid to a gas.
The following table lists the melting point and boiling point of four compounds.
Which compound is NOT a liquid at -170oC
(A) methane
(B) ethane
(C) propane
(D) butane
Auckland Grammar School – Form 4 Term 4 Science Examination – 2021
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28. Information about chemical compounds can be shown in several different ways. These include
the ball-and-stick model, the molecular formula and the empirical formula.
The table lists information about the compound ethylene glycol in these ways.
The diagram represents the ball-and-stick model of the compound 2,4-dibromo-3,3,4,4tetrafluorobutene.
What is the empirical formula of 2,4-dibromo-3,3,4,4-tetrafluorobutene?
(A) CHFBr
(B) C2HF2Br
(C) C2H2F2Br2
(D) C4H2F4Br2
29. The wavelength of a soundwave determines its pitch. The amplitude of the wave determines
the volume.
Here are the wave patterns made by four different sounds.
Auckland Grammar School – Form 4 Term 4 Science Examination – 2021
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30. Radio telescopes on Earth communicate with geostationary satellites that are placed 36 000 km
above them using radio waves which travel at 300000 kilometres per second. A radio telescope is
positioned directly underneath a geostationary satellite. Assuming no interference or delays, how
long would it take for a signal to be transmitted from and return to the radio telescope?
(A) 0.12 seconds
(B) 0.24 seconds
(C) 8.3 seconds
(D) 16.6 seconds
31. The chromosomes inside cells of a living organisms contain the genetic information that
determines the features of the organism. Chromosomes are found inside the nucleus of most types
of cells. Scientists used a process called ‘cloning’ to produce a lamb. This diagram shows the steps
in this process.
Which sheep is the cloned lamb genetically closest to and what is the reason for this?
32. What is the reason why scientists used a third sheep to be the foster mother?
(A) no sperm were involved
(B) some sheep are more fertile than others
(C) to avoid the body of Sheep 1 rejecting the egg cell
(D) to see if there was any influence of the embryo’s environment during development
Auckland Grammar School – Form 4 Term 4 Science Examination – 2021
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33. Glossu Rabban is interested in the way cells replicate their DNA. DNA replication involves the
separation of the DNA molecule in to two stands which form the basis for two new identical DNA
molecules. The DNA molecule contains four bases, guanine (G), cytosine (C), adenine (A) and
thymine (T). These bases always pair up the same way in the DNA molecule:
•
•
guanine pairs up with cytosine
adenine pairs up with thymine
Starting from left, which is the correct sequence of bases that will successfully pair up with the
section of DNA shown?
(A) CAGTGTACT
(B) GTCACATGA
(C) CAGACATGA
(D) GTCTGACTA
34. Cells need to divide for growth, repair and reproduction. Most cells can only divide up to 100
times in order to prevent damage to the cell. Cancer cells divide uncontrollably.
Chromosomes are in the cell nucleus. The diagrams show the parts of a chromosome and compare
the chromosome from different cells.
From the diagrams, which part of the chromosome plays a role in controlling cell division?
(A) telomere
(B) chromatid
(C) centromere
(D) gene
35. The diagram shows a ray of light striking and entering a glass prism. As the light enters the
prism the ray refracts towards the ‘normal’, an imaginary line drawn perpendicular to the surface of
the prism. Once inside the prism, the light ray travels in a straight line again.
Which arrow correctly represents the path
of the light ray after it has entered the
prism?
Auckland Grammar School – Form 4 Term 4 Science Examination – 2021
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36.The table shows information about the date, time and type of some solar eclipses.
Using the table above, choose the date when the next total eclipse of the Sun will occur.
(A) 13 Nov 2012
(B)
29 Apr 2014
(C) 20 Mar 2015
(D) 09 Mar 2016
37. On June 6, 2012, Venus passed in front of the Sun. This ‘transit of Venus’ was visible from
Earth.
There were four critical times that scientists recorded:
C1-Venus first appeared to touch the edge of the Sun
C2-Venus first appeared fully inside the edge of the Sun
C3-Venus last appeared fully inside the edge of the Sun
C4-Venus appeared to touch the edge of the Sun for the last time
The duration of the transit is the time between C1 and C4.
Using the information from the diagram, what was the approximate duration of the transit of Venus?
(A) 6 hours 15 minutes
(B) 6 hours 30 minutes
(C) 6 hours 45 minutes
(D) 7 hours
Auckland Grammar School – Form 4 Term 4 Science Examination – 2021
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The geology of an area is determined by the formation of rocks and earth movements.
Liet-Kynes was looking at this geological cross-section.
Based on the following information, he was able to work out the order of events that produced this
cross-section.
-
Sedimentary rocks are formed in layers, with the oldest at the bottom and the most recent at
the top
Molten rock may flow along cracks or between layers to form an intrusion
Rock layers may break due to earth movements, forming fault lines. Rock layers may then
move along fault lines.
Erosion occurs when the exposed surface of earth is worn by water and/or wind
38. Which option shows the correct sequence of events?
(A) intrusion > fault > erosion
(B) fault > intrusion > erosion
(C) fault > erosion > intrusion
(D) erosion > fault > intrusion
39. Based on the cross section (in the diagram above), how many different rock layers are exposed
to water or wind?
(A)
1
(B)
2
(C)
3
(D)
4
40. Contour lines on geological maps represent lines of constant height, so that all points on a given
line have the same height. Geological maps show the height of each contour of the landform.
Geological structures can be predicted using the map and the Principle of Superposition. This
principle states that when rocks are deposited, the older rock will be under the younger ones. On
the geological map below, different
rock layers are labelled by letters.
If a core rock sample was taken at the
drill point shown, in what order would
the drill pass through the rock layers?
Auckland Grammar School – Form 4 Term 4 Science Examination – 2021
(A)
R,T,Q,S
(B)
S,Q,R,T
(C)
R,Q,S,T
(D)
S,Q,T,R
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