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Science questions, unit 13
Nama / NameKelas / ClassTarikh / Date

Technology

38 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 statement best describes technology?
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A
Technology is the application of scientific knowledge to overcome human limitations.
For the teacher: Remembering, low difficulty, standard 13.1.1
Textbook p. 212
2

Question 2

Diagram 1 shows a man using a piece of equipment. Which human limitation does it overcome?
A man looking through a telescope at the night sky
Diagram 1
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D
The equipment is a telescope. It lets us see the Moon, planets and other faraway objects.
For the teacher: Understanding, low difficulty, standard 13.1.1
Textbook p. 212
3

Question 3

Mr Lim must speak to the whole school assembly, but his voice is too soft for the back rows. Which equipment helps him?
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C
A microphone and loudspeaker amplify his voice so that it is heard clearly.
For the teacher: Applying, low difficulty, standard 13.1.1
Textbook p. 212
4

Question 4

Why does a doctor use a stethoscope?
A doctor listening to a girl's chest with a stethoscope
Diagram 2
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B
Our ears cannot hear very low sounds such as a heartbeat. A stethoscope makes them clear.
For the teacher: Understanding, low difficulty, standard 13.1.1
Textbook p. 213
5

Question 5

Which machine is used to detect a disease inside the human body?
Ultrasound, X-ray and MRI machines
Diagram 3
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D
X-ray, ultrasound and MRI machines let doctors see inside the body.
For the teacher: Remembering, low difficulty, standard 13.1.2
Textbook p. 215
6

Question 6

Which transport helps humans explore outer space?
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A
Rockets carry humans and equipment into space.
For the teacher: Remembering, low difficulty, standard 13.1.2
Textbook p. 216
7

Question 7

Farmers use drones to spray fertiliser and herbicide. What is the main benefit?
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C
A drone covers the farm quickly, so the farmer saves time and needs fewer workers.
For the teacher: Understanding, low difficulty, standard 13.1.2
Textbook p. 214
8

Question 8

A builder wants to finish a house quickly and cheaply. Which method should he use?
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B
In the prefabricated method the parts are made in a factory and assembled on site, which is quicker and cheaper.
For the teacher: Applying, medium difficulty, standard 13.1.2
Textbook p. 217
9

Question 9

Which is a disadvantage of using drones on farms?
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D
Drones use lithium batteries. When thrown away they cause pollution and add e-waste.
For the teacher: Understanding, medium difficulty, standard 13.1.3
Textbook p. 218
10

Question 10

Which pair of advantage and disadvantage is correct for the Internet?
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A
The Internet spreads information quickly, but personal data can be exploited. Gases come from vehicles.
For the teacher: Analysing, medium difficulty, standard 13.1.3
Textbook p. 219
11

Question 11

Why do humans keep inventing new technology?
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C
New technology solves new problems and can reduce the bad effects of old technology, so life can be comfortable and sustainable.
For the teacher: Evaluating, medium difficulty, standard 13.1.4
Textbook p. 219
12

Question 12

In a simple telegraph machine, what does a short buzz from the buzzer stand for in the Morse code chart?
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B
A short buzz is a dot. A long buzz is a line. Keep the switch pressed longer for a line.
For the teacher: Applying, medium difficulty, standard 8.2.7
Textbook p. 220

Section B: structured questions

26 marks
Answer all questions.
13

Question 13

Answer these questions about technology.
[2 marks] (a)State the meaning of technology.
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Tick each point you got.
[1 mark] (b)Give one reason why humans need technology.
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Any 1 points
Tick each point you got.
For the teacher: Remembering, low difficulty, standard 13.1.1
Textbook p. 212
14

Question 14

Name equipment that overcomes each limitation.
[1 mark] (a)Syuhada cannot see microorganisms with her naked eyes.
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Tick each point you got.
[1 mark] (b)Aiman wants to talk to his grandmother who lives in another state.
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Tick each point you got.
[1 mark] (c)A doctor wants to listen to a patient's heartbeat.
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Tick each point you got.
[1 mark] (d)A family wants to reach a faraway country in a few hours.
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Tick each point you got.
For the teacher: Applying, low difficulty, standard 13.1.1
Textbook p. 212
15

Question 15

Diagram 4 shows three machines used in hospitals.
Ultrasound, X-ray and MRI machines
Diagram 4
[1 mark] (a)In which field of technology are these machines used?
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Medicine
[1 mark] (b)State one benefit of these machines to doctors.
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Any 1 points
Tick each point you got.
For the teacher: Understanding, low difficulty, standard 13.1.2
Textbook p. 215
16

Question 16

Diagram 5 shows a drone spraying a paddy field and its advantage and disadvantage.
A drone spraying crops with an advantage box and a disadvantage box
Diagram 5
[1 mark] (a)Write one advantage of using the drone.
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Tick each point you got.
[1 mark] (b)Write one disadvantage of using the drone.
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Any 1 points
Tick each point you got.
[1 mark] (c)Suggest how a farmer can reduce the effect in (b).
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Any 1 points
Tick each point you got.
For the teacher: Analysing, medium difficulty, standard 13.1.3
Textbook p. 218
17

Question 17

Match each field with one example of its technology. Choose the correct example.
[1 mark] (a)Communication
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Online meetings
[1 mark] (b)Transport
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Bullet train
[1 mark] (c)Medicine
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Vaccine
[1 mark] (d)Construction: state one example.
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Tick each point you got.
For the teacher: Applying, low difficulty, standard 13.1.2
Textbook p. 217
18

Question 18

A company wants to clear a forest to build houses and roads for a new town.
[1 mark] (a)State one advantage of this development.
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Any 1 points
Tick each point you got.
[1 mark] (b)State one disadvantage.
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Any 1 points
Tick each point you got.
[2 marks] (c)Do you agree to clear the forest without any plan? Give a reason.
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Any 2 points
Tick each point you got.
For the teacher: Evaluating, high difficulty, standard 13.1.3
Textbook p. 218
19

Question 19

Information on the Internet reaches people quickly.
[1 mark] (a)State one advantage of this.
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Tick each point you got.
[1 mark] (b)State one disadvantage of using the Internet.
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Tick each point you got.
[1 mark] (c)Why do humans keep inventing new technology?
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Any 1 points
Tick each point you got.
For the teacher: Analysing, low difficulty, standard 13.1.3
Textbook p. 219
20

Question 20

Alin makes a simple telegraph machine with two dry cells, a dry cell holder, a buzzer, a switch and connecting wires, as in Diagram 6.
A telegraph machine with dry cells, wires, buzzer and switch next to a Morse code chart
Diagram 6
[1 mark] (a)What must Alin do to make the buzzer sound?
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Tick each point you got.
[1 mark] (b)How does Alin send a line (dash) in Morse code?
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Tick each point you got.
[1 mark] (c)The buzzer does not sound when she presses the switch. Make one inference.
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Any 1 points
Tick each point you got.
For the teacher: Creating, medium difficulty, standard 8.2.7
Textbook p. 220