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Science questions, unit 6

Measurement

28 marks. Use Practice to check each answer as you go, or Exam to answer everything first and then check.

Section A: objective questions

8 marks
Choose the best answer for each question.
1

Question 1

Diagram 1 shows a tennis court. Which unit is suitable for its area?
A tennis court seen from above
Diagram 1
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B
A court is a big place, but not as big as a state. Its area is measured in square metre (m²).
For the teacher: Remembering, low difficulty, standard 6.1.1
Textbook p. 80
2

Question 2

What is volume?
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D
Volume is the amount of space which can be filled with solid, liquid or gas. The size of a flat surface is area.
For the teacher: Remembering, low difficulty, standard 6.1.1
Textbook p. 85
3

Question 3

Diagram 2 shows a syringe with medicine. Which unit is best for the volume of the medicine?
A small plastic syringe
Diagram 2
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A
A syringe holds a small amount of liquid, so we use millilitre (mℓ). Units with ² are for area, not volume.
For the teacher: Understanding, low difficulty, standard 6.1.1
Textbook p. 85
4

Question 4

Diagram 3 shows four cards, P, Q, R and S, on 1 cm × 1 cm squares. Which card has the biggest area?
Four rectangles on squared paper: P covers 6 squares, Q 12, R 10 and S 16
Diagram 3
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D
Count the squares: P = 6 cm², Q = 12 cm², R = 10 cm², S = 16 cm². S covers the most squares.
For the teacher: Applying, medium difficulty, standard 6.1.2
Textbook p. 81
5

Question 5

What is the name of the curve on the surface of a liquid in a measuring cylinder?
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C
The meniscus is the curve on the surface of the liquid in a container.
For the teacher: Remembering, low difficulty, standard 6.1.5
Textbook p. 89
6

Question 6

Diagram 4 shows three eye positions, P, Q and R. Which is the correct position to read the volume of water?
A measuring cylinder with eye P above, eye Q level with the meniscus, and eye R below
Diagram 4
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B
The eye must be level with the bottom of the meniscus. Eye Q is level with it.
For the teacher: Applying, low difficulty, standard 6.1.5
Textbook p. 89
7

Question 7

We use the water displacement method to find the volume of which object?
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A
A stone has an irregular shape. We put it in water and measure how much the water level rises.
For the teacher: Understanding, low difficulty, standard 6.1.6
Textbook p. 91
8

Question 8

Diagram 5 shows some coloured water in a measuring cylinder. What is the volume of the water?
Measuring cylinder with the bottom of the meniscus at the 70 mark
Diagram 5
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C
The bottom of the meniscus is at the line marked 70, so the volume is 70 mℓ.
For the teacher: Applying, low difficulty, standard 6.1.5
Textbook p. 90

Section B: structured questions

20 marks
Answer all questions. Circle the answer or write it in the space given.
9

Question 9

Choose the correct unit for each object.
[1 mark] (a)Area of a book cover
A book
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square centimetre (cm²)
A book is small, so we use cm².
[1 mark] (b)Volume of water in a water tank
A large water tank
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cubic metre (m³)
A water tank is very big, so we use cubic metre (m³).
[1 mark] (c)Volume of a carton of milk
A small carton of chocolate milk
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millilitre (mℓ)
A small carton holds only a little drink (200 mℓ), so we use millilitre.
For the teacher: Remembering, low difficulty, standard 6.1.1
Textbook p. 80
10

Question 10

Classify each surface as regular or irregular.
[1 mark] (a)Leaf
A green leaf
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Irregular
A leaf has a curvy, odd shape.
[1 mark] (b)Swimming pool
A rectangular swimming pool
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Regular
The pool is a rectangle with straight sides.
[1 mark] (c)Lake
A lake among green hills
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Irregular
A lake has a wavy, odd-shaped edge.
For the teacher: Understanding, low difficulty, standard 6.1.3
Textbook p. 83
11

Question 11

Mei Ling drew around a puddle on graph paper. Each square is 1 cm × 1 cm. She ticked (✓) some squares. Diagram 6 shows her work.
An odd shape on squared paper with 14 squares ticked
Diagram 6
[1 mark] (a)Which squares should Mei Ling tick?
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Full squares and squares half full or more
We tick full squares and squares that are half full or more.
[1 mark] (b)Estimate the area of the puddle.
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Count the ticks: 5 + 5 + 4 = 14.
Tick each point you got.
For the teacher: Applying, medium difficulty, standard 6.1.3
Textbook p. 84
12

Question 12

Three hollow boxes, P, Q and R, are filled with 1 cm³ cubes. Diagram 7 shows the cubes in each box.
Box P: 3 cm by 2 cm by 1 cm of cubes
Box Q: 3 cm by 3 cm by 2 cm of cubes
Box R: 3 cm by 2 cm by 2 cm of cubes
[1 mark] (a)Count the cubes in box R. What is the volume of box R?
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Box R has 3 × 2 = 6 cubes in each layer and 2 layers: 6 + 6 = 12 cubes, so 12 cm³.
Tick each point you got.
[1 mark] (b)Which box has the biggest volume?
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Q
P = 6 cubes (6 cm³), Q = 18 cubes (18 cm³), R = 12 cubes (12 cm³). Q needs the most cubes.
For the teacher: Applying, medium difficulty, standard 6.1.4
Textbook p. 87
13

Question 13

Hafiz tied a stone with thread and put it into a measuring cylinder of water. Diagram 8 shows the water level before and after.
Measuring cylinder with water at 40 ml
Measuring cylinder with a stone inside and water at 55 ml
[1 mark] (a)What is the initial volume of the water?
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Tick each point you got.
[1 mark] (b)What is the volume of the stone?
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Volume of stone = final volume − initial volume.
Tick each point you got.
[1 mark] (c)Name the method Hafiz used.
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Water displacement method
The stone pushes (displaces) the water up. The water that moves up has the same volume as the stone.
For the teacher: Analysing, medium difficulty, standard 6.1.6
Textbook p. 91
14

Question 14

Lim, Langgi and Aishah read the volume of the same milk. Lim says 210 mℓ. Langgi says 190 mℓ. Aishah says 200 mℓ. Diagram 9 shows how they read it.
Lim reads from above, Langgi from below and Aishah with her eyes level with the liquid
Diagram 9 (textbook p. 89)
[1 mark] (a)Who has the correct reading?
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Aishah
[1 mark] (b)Give a reason for your answer.
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Tick each point you got.
For the teacher: Evaluating, high difficulty, standard 6.1.5
Textbook p. 89
15

Question 15

Lim's father wants to put new tiles on the floor of his house.
[1 mark] (a)What will happen if he does not measure the floor first?
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Any 1 points
Tick each point you got.
[2 marks] (b)Lim wants to find the volume of a nail. He has a full glass of water, a basin, thread and a syringe. Write the steps he should follow.
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Tick each point you got.
For the teacher: Creating, high difficulty, standard 6.1.7
Textbook p. 94
16

Question 16

Is each sentence true or false?
[1 mark] (a)A 1 cm × 1 cm paper square has an area of 1 cm².
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True
[1 mark] (b)We read a measuring cylinder with our eyes above the meniscus.
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False
Our eyes must be level with the meniscus, not above it.
For the teacher: Understanding, low difficulty, standard 6.1.2
Textbook p. 81