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Science questions, unit 6

Light and dark

26 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

12 marks
Choose the best answer for each question.
1

Question 1

Which is the main source of light in the day?
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B
In the day, the sun is the main source of light.
For the teacher: Remembering, low difficulty, standard 6.1.1
Textbook p. 62
2

Question 2

Which one is a source of light?
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C
Fire, such as a candle flame, gives out light.
For the teacher: Remembering, low difficulty, standard 6.1.1
Textbook p. 63
3

Question 3

Which is a natural source of light?
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A
Sunlight is natural. Lamps are made by people.
For the teacher: Understanding, low difficulty, standard 6.1.1
Textbook p. 62
4

Question 4

Diagram 1 shows a village at night. Which gives light to the dark place?
A village at night. Children play with sparklers, a torch burns with a flame and lamps glow in the dark
Diagram 1
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B
The sun cannot be seen at night. Lamps and fire give light.
For the teacher: Understanding, low difficulty, standard 6.1.1
Textbook p. 63
5

Question 5

It is ______ to do things in a dark place.
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C
We cannot see well in the dark, so it is difficult to do things.
For the teacher: Understanding, low difficulty, standard 6.1.2
Textbook p. 65
6

Question 6

Dina must find her shoes in a dark room. What should she use?
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A
A torch is a source of light. It helps her see in the dark.
For the teacher: Applying, low difficulty, standard 6.1.2
Textbook p. 65
7

Question 7

A shadow is made when light is ______ by an object.
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D
An object that blocks light makes a shadow.
For the teacher: Remembering, low difficulty, standard 6.1.3
Textbook p. 67
8

Question 8

Diagram 2 shows a family in a park. What are the dark shapes on the ground?
A family with two umbrellas in a park. Dark shapes are on the grass behind them
Diagram 2
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C
The people block the sunlight, so shadows are made.
For the teacher: Understanding, low difficulty, standard 6.1.3
Textbook p. 66
9

Question 9

Hana switches on a torch and puts a toy in front of it. A shadow is made on the wall. Why?
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D
A shadow is made when an object blocks light.
For the teacher: Applying, medium difficulty, standard 6.1.3
Textbook p. 67
10

Question 10

Which object makes the clearest shadow?
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B
Thick paper does not let light pass through, so its shadow is clear. Tracing paper, glass and frosted glass let some light through, so their shadows are less clear.
For the teacher: Applying, medium difficulty, standard 6.1.4
Textbook p. 68
11

Question 11

Diagram 3 shows a shadow play. What is it called?
A puppeteer with flat puppets in front of a lit screen
Diagram 3
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A
Wayang kulit is a popular shadow play.
For the teacher: Remembering, low difficulty, standard 6.1.5
Textbook p. 69
12

Question 12

Why is the shadow of a wayang kulit puppet clear?
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C
The puppet does not let light pass through, so its shadow is clear.
For the teacher: Understanding, medium difficulty, standard 6.1.5
Textbook p. 69

Section B: structured questions

14 marks
Answer all questions. Circle the answer or write it in the space.
13

Question 13

Light comes from different sources.
[1 mark] (a)Is the sun a source of light?
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Yes
[1 mark] (b)Is a candle flame a source of light?
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Yes
[1 mark] (c)Name one lamp that we can see on the road at night.
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Tick each point you got.
For the teacher: Remembering, low difficulty, standard 6.1.1
Textbook p. 62
14

Question 14

Two pairs of pupils find number cards inside two black boxes. Pair A has a torch in its box. Pair B has no torch.
[1 mark] (a)Which pair finishes the game faster?
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Pair A
[1 mark] (b)Why?
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Tick each point you got.
For the teacher: Understanding, low difficulty, standard 6.1.2
Textbook p. 65
15

Question 15

Diagram 4 shows a family in the park.
A family with two umbrellas in a park. Dark shapes are on the grass behind them
Diagram 4
[1 mark] (a)What do the people block to make shadows?
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Tick each point you got.
[1 mark] (b)Will there be shadows if there is no light?
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No
A shadow needs light.
For the teacher: Applying, medium difficulty, standard 6.1.3
Textbook p. 67
16

Question 16

Lina shines a torch on four objects and looks at the shadows. Circle Clear or Less clear.
[1 mark] (a)Thick paper
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Clear
[1 mark] (b)Tracing paper
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Less clear
[1 mark] (c)Steel ruler
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Clear
[1 mark] (d)Glass
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Less clear
For the teacher: Analysing, medium difficulty, standard 6.1.4
Textbook p. 68
17

Question 17

Light is needed for our daily activities.
[1 mark] (a)Why do we need light for daily activities?
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Tick each point you got.
[2 marks] (b)Amin and Khairul shine two torches on a tree from two sides. How many shadows of the tree are made? Why?
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Tick each point you got.
For the teacher: Evaluating, high difficulty, standard 6.1.2
Textbook p. 72