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Science questions, unit 7
Nama / NameKelas / ClassTarikh / Date

Magnets

29 marks. Use Practice to check each answer as you go, or Exam to answer everything first. Ask a grown-up to help you mark the written answers.

Section A: objective questions

15 marks
Choose the best answer for each question.
1

Question 1

Which one uses a magnet to hold a screw?
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A
A magnetic screwdriver has a magnet that holds the screw.
For the teacher: Remembering, low difficulty, standard 7.1.1
Textbook p. 63
2

Question 2

Why does a pencil case with a magnet close tightly?
A pencil case that has a magnet inside
Diagram 1
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B
The magnet pulls the lid closed.
For the teacher: Remembering, low difficulty, standard 7.1.1
Textbook p. 63
3

Question 3

Diagram 2 shows three magnets, a, b and c. What is the shape of magnet b?
Magnet a is a ring, magnet b is a horseshoe and magnet c is a bar
Diagram 2
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C
Magnet b is bent like a horseshoe.
For the teacher: Remembering, low difficulty, standard 7.1.2
Textbook p. 69
4

Question 4

In Diagram 2, what is the shape of magnet c?
Magnet a is a ring, magnet b is a horseshoe and magnet c is a bar
Diagram 2
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D
Magnet c is a long block, so it is a bar magnet.
For the teacher: Remembering, low difficulty, standard 7.1.2
Textbook p. 69
5

Question 5

A magnet is a flat disc with a hole. It is a ...
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A
A flat disc with a hole is a ring magnet. A button magnet has no hole.
For the teacher: Understanding, low difficulty, standard 7.1.2
Textbook p. 64
6

Question 6

Which object is attracted by a magnet?
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B
A safety pin is made of metal, so a magnet attracts it.
For the teacher: Remembering, low difficulty, standard 7.1.3
Textbook p. 65
7

Question 7

Which object is not attracted by a magnet?
Ice cream sticks, plastic button, screw, rubber, bar magnet, plastic ruler, marble, safety pin and metal bottle caps
Diagram 3
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C
Rubber is not attracted by a magnet.
For the teacher: Remembering, low difficulty, standard 7.1.3
Textbook p. 65
8

Question 8

Ali puts a magnet near a pencil. What happens?
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C
A magnet cannot attract a pencil.
For the teacher: Understanding, low difficulty, standard 7.1.3
Textbook p. 65
9

Question 9

What are the two poles of a magnet?
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B
Every magnet has a north pole and a south pole.
For the teacher: Remembering, low difficulty, standard 7.1.4
Textbook p. 67
10

Question 10

A north pole is put close to a south pole. What happens?
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D
Different poles attract.
For the teacher: Understanding, low difficulty, standard 7.1.4
Textbook p. 68
11

Question 11

Two south poles are put close together. What happens?
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A
The same poles repel.
For the teacher: Understanding, low difficulty, standard 7.1.4
Textbook p. 68
12

Question 12

Two magnets push each other away. What must be true about the poles that are close together?
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B
Magnets repel when the same poles are close together.
For the teacher: Applying, medium difficulty, standard 7.1.4
Textbook p. 68
13

Question 13

A stronger magnet attracts ... paper clips.
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C
A stronger magnet attracts more paper clips.
For the teacher: Remembering, low difficulty, standard 7.1.5
Textbook p. 70
14

Question 14

Magnet P attracts 6 paper clips. Magnet Q attracts 3 paper clips. Which statement is true?
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D
Magnet P attracts more paper clips, so it is stronger.
For the teacher: Applying, medium difficulty, standard 7.1.5
Textbook p. 69
15

Question 15

Paper clips are mixed with talcum powder. Which is the best way to take out the paper clips?
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A
A magnet attracts the paper clips but not the talcum powder.
For the teacher: Applying, high difficulty, standard 7.1.3
Textbook p. 66

Section B: structured questions

14 marks
Answer all questions. Write your answers in the spaces provided.
16

Question 16

Answer these questions about magnets.
[1 mark] (a)Name one thing that uses a magnet.
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Tick each point you got.
[1 mark] (b)A magnetic screwdriver holds a screw.
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True
For the teacher: Remembering, low difficulty, standard 7.1.1
Textbook p. 63
17

Question 17

Choose the correct word.
[1 mark] (a)A magnet attracts a screw.
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Yes
[1 mark] (b)A magnet attracts a plastic button.
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No
[1 mark] (c)A magnet attracts a marble.
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No
For the teacher: Understanding, low difficulty, standard 7.1.3
Textbook p. 66
18

Question 18

Look at Diagram 3 on the objects tested with a magnet.
Ice cream sticks, plastic button, screw, rubber, bar magnet, plastic ruler, marble, safety pin and metal bottle caps
Diagram 3
[2 marks] (a)Write two objects that a magnet attracts.
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Tick each point you got.
[2 marks] (b)Write two objects that a magnet does not attract.
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Tick each point you got.
For the teacher: Applying, medium difficulty, standard 7.1.6
Textbook p. 65
19

Question 19

Two bar magnets are put close together.
[1 mark] (a)What happens when two different poles are put close together?
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Tick each point you got.
[1 mark] (b)What happens when two same poles are put close together?
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Tick each point you got.
For the teacher: Understanding, medium difficulty, standard 7.1.4
Textbook p. 68
20

Question 20

A stronger magnet can attract more paper clips.
[1 mark] (a)Is this sentence true or false?
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True
For the teacher: Understanding, low difficulty, standard 7.1.5
Textbook p. 70
21

Question 21

Hana tests a U-shaped magnet and a ring magnet. The U-shaped magnet attracts 4 paper clips. The ring magnet attracts 2 paper clips.
[1 mark] (a)Which magnet is stronger?
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Tick each point you got.
[1 mark] (b)Why do you say so?
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Tick each point you got.
For the teacher: Applying, high difficulty, standard 7.1.5
Textbook p. 69