End-of-Year Practice Paper: Sec 2 chapters 1–8 — question paper (print)

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Secondary 2 · Lower Secondary Science (G2 / G3)

End-of-Year Practice Paper

Sec 2 chapters 1–8

Duration: 90 minutes

Total: 60 marks

Name:

Class:

Date:

READ THESE INSTRUCTIONS FIRST

Write your name, class and register number in the spaces at the top of this page.
Answer all questions.
Section A: write the letter (A, B, C or D) of the correct answer in the brackets provided.
Section B: write your answers in the spaces provided.
Show your working for calculations, and give units with your answers.
The number of marks is given in brackets [ ] at the end of each question or part question.

Original practice material written for the MOE 2021 Lower Secondary Science syllabus. It is not an official MOE or school examination paper. Sec 2 chapters 1–8.

For Examiner’s Use
Section A	/ 20
Section B	/ 40
Total	/ 60

Section A: Multiple-choice questions[20 marks]

Answer all questions. For each question, write the letter (A, B, C or D) of the correct answer in the brackets provided.

1
A cyclist stops pedalling and slows down. Which force mainly causes the slowing?
1. Afriction
2. Bher weight
3. Cthe upward force from the road
4. Da forward push
( )
2
Heat reaches the handle of a metal spoon left in hot tea. The spoon does not move. The transfer along the spoon is
1. Aconvection
2. Bevaporation
3. Cconduction
4. Dphotosynthesis
( )
3
Which pair of substances is needed for iron to rust?
1. Anitrogen and oil
2. Boxygen and water
3. Ccarbon dioxide and paint
4. Dhydrogen and sand
( )
4
In the food chain grass → rabbit → fox, the producer is
1. Athe fox
2. Bthe rabbit
3. Cboth animals
4. Dthe grass
( )
5
In a series circuit with one cell and two lamps, the current
1. Ais the same at every point in the loop
2. Bis used up in the first lamp
3. Cis zero between the lamps
4. Dsplits into two equal paths
( )
6
Which organ makes a juice that contains protease, lipase and amylase?
1. Athe stomach only
2. Bthe large intestine
3. Cthe pancreas
4. Dthe gall bladder
( )
7
In a plant stem, which tissue carries water from the roots to the leaves?
1. Aphloem
2. Bxylem
3. Ca root hair
4. Da stoma
( )
8
Which part produces sperm?
1. Aovary
2. Boviduct
3. Cuterus
4. Dtestis
( )
9
A force of 20 N acts on an area of 0.5 m². The pressure is
1. A40 N/m²
2. B20.5 N/m²
3. C10 N/m²
4. D0.025 N/m²
( )
10
Warm air above a heater rises and cooler air moves in to replace it. This is
1. Aconduction in a solid
2. Bradiation across a vacuum
3. Ca convection current
4. Dexpansion of a metal
( )
11
An acid reacts with an alkali. The reaction is called
1. Adistillation
2. Bneutralisation
3. Cphotosynthesis
4. Dfertilisation
( )
12
Arrows in a food chain point
1. Atowards the producer
2. Bfrom the larger animal to the smaller one
3. Conly between non-living factors
4. Dfrom the organism eaten towards the organism that feeds, showing energy transfer
( )
13
A fuse in a plug melts when
1. Athe current becomes too large
2. Bthe voltage of the mains falls
3. Cthe earth wire is removed
4. Dthe lamp is switched off
( )
14
Digested food is absorbed into the blood mainly in the
1. Amouth
2. Boesophagus
3. Csmall intestine
4. Dlarge intestine
( )
15
Which part of the blood carries oxygen?
1. Aplasma
2. Bred blood cells
3. Cplatelets
4. Dthe wall of an artery
( )
16
Which part releases an egg cell?
1. Atestis
2. Bsperm duct
3. Curethra
4. Dovary
( )
17
A student stretches an elastic band. Energy is stored in the band as
1. Aelastic potential energy
2. Bchemical energy in the rubber only after it snaps
3. Csound energy while it is still stretched
4. Dheat that cannot be transferred
( )
18
A matt black can and a shiny silver can hold the same hot water. The black can cools faster because it
1. Aconducts better through the plastic lid
2. Bis a better reflector
3. Cis a better emitter of radiation
4. Dstops convection inside the water
( )
19
Which word equation shows a chemical change?
1. Aice → water
2. Bmagnesium + oxygen → magnesium oxide
3. Csalt + water → salt solution
4. Dsteam → water
( )
20
Fungi that rot a dead log are
1. Aproducers
2. Bpredators
3. Cprey
4. Ddecomposers
( )

Section B: Structured questions[40 marks]

Answer all questions in the spaces provided. Show your working for calculations.

1
A delivery worker carries a box of weight 30 N. The straps have a total area of 0.03 m² on her shoulder. She then slides the box along the floor with a push of 18 N. Friction is 6 N.
1. (a)
  Calculate the pressure of the straps on her shoulder.
  pressure =N/m²[2]
2. (b)
  Suggest one change to the straps that would reduce the pressure, without changing the weight of the box.
  [1]
3. (c)
  Calculate the resultant horizontal force on the box as she slides it.
  resultant force =N[2]
4. (d)
  State the effect of this resultant force on the motion of the box.
  [1]
5. (e)
  The worker stops pushing and the box slides to a halt. Name the force that stops it, and state the energy change as it slows.
  [2]
6. (f)
  The box was lifted onto a shelf earlier. Name the store of energy it gained by being higher up.
  [2]
2
A student investigates heat loss from two cans of hot water, one wrapped in shiny foil and one painted matt black. She also studies a food chain from a drain: algae → mosquito larva → guppy.
1. (a)
  State which can cools more slowly, and name the process the foil reduces.
  [2]
2. (b)
  Both cans have a plastic lid. Explain how the lid reduces heat loss.
  [2]
3. (c)
  Name the producer in the food chain, and state how it gets its energy.
  [2]
4. (d)
  A chemical is spilled and the algae die. Explain what happens to the number of mosquito larvae.
  [2]
5. (e)
  Dead algae are broken down in the drain. Name this group of organisms and one abiotic factor that could slow their work.
  [2]
3
A student sets up a series circuit with a cell, a switch, a lamp and an ammeter. She then adds a second lamp in parallel with the first. Separately, she tests an unknown solution with litmus and adds it to magnesium.
1. (a)
  In the series circuit the ammeter reads 0.4 A next to the cell. State the current in the lamp. Give a reason.
  [2]
2. (b)
  State one advantage of connecting the two lamps in parallel rather than in series.
  [1]
3. (c)
  The plug for a mains heater contains a fuse and an earth wire. State the job of each.
  [2]
4. (d)
  Blue litmus turns red in the unknown solution. State whether the solution is acidic or alkaline.
  [1]
5. (e)
  Magnesium ribbon is added to the solution. Bubbles form and the ribbon gets smaller. Name the gas and describe the test for it.
  [2]
6. (f)
  The same acid is later added to sodium hydroxide until the mixture is neutral. Name the type of reaction and the two products.
  [2]
4
The questions below are about digestion, transport and reproduction.
1. (a)
  Name the enzyme in saliva and the food substance it acts on.
  [2]
2. (b)
  State one way the small intestine is adapted for absorption.
  [1]
3. (c)
  Name the blood vessel that carries blood away from the heart, and one feature of its wall.
  [2]
4. (d)
  A plant wilts on a hot afternoon. Explain how water is lost from the leaves.
  [2]
5. (e)
  State where fertilisation happens in the female reproductive system, and name the cell formed when a sperm nucleus joins an egg nucleus.
  [2]
6. (f)
  State one change that happens in the uterus lining if fertilisation does not take place.
  [1]

— End of paper —