Science PMR By M Smkdmscience
Name:Class/School:Answer all question/Jawab semua soalan.
- 1.1.Temperature can be measured in I Joules II Kelvin III Celsius IV Fahrenheit
- A.
I and III only
- B.
II and IV only
- C.
II, III and IV only
- D.
I, II, III and IV
- 2.Which of the following is a source of heat?
- A.
A stone
- B.
A volcano
- C.
A stick
- D.
A mirror
- 3.3.Which of the following is not part of the human respiratory system?
- A.
Trachea
- B.
Ribs
- C.
Pulmonary artery
- D.
Intercostal muscles
- 4.4.When we inhale, why is air pushed into the lungs?
- A.
The air pressure in the lungs decreases
- B.
The air pressure in the lungs increases
- C.
The lungs become smaller
- D.
The diaphragm curves upwards
- 5.5.What are the changes that take place when we exhale? I The rib cage moves down II The outer intercostal muscles relax III The thoracic cavity becomes bigger IV Air flows from the atmosphere into the lungs
- A.
I and II only
- B.
III and IV only
- C.
II, III and IV only
- D.
I, II, III and IV
- 6.6.Which of the following is the correct sequence to show how air enters the lungs?
- A.
Trachea, bronchiole, lung, alveolus
- B.
Trachea, bronchus, bronchiole, alveolus
- C.
Bronchus, trachea, bronchiole, lung
- D.
Trachea, alveolus, bronchus, bronchiole
- 7.7. Which of the following correctly shows the contents of inhaled air and exhaled air? Gas Inhaled air Exhaled air I Oxygen 21% 16% II Carbon dioxide 0.03% 4% III Nitrogen 78% 87% IV Water vapour A little 50%
- A.
I and II only
- B.
III and IV only
- C.
II, III and IV only
- D.
I, II, III and IV
- 8.8..Which of the following diseases is caused by smoking cigarettes? I Lung cancer II Emphysema III Bronchitis IV Hepatitis
- A.
I and II only
- B.
III and IV only
- C.
I, II and III only
- D.
I, II, III and IV
- 9.9.Why are cigarette smokers sometimes short of breath?
- A.
Their lung tissue has turned black
- B.
Cigarette smoke reduces the amount of oxygen in the blood
- C.
Their lung tissue contains nicotine
- D.
There are many poisonous gases in their lymphatic system
- 10.10..hich of the following pollutants is carcinogenic?
- A.
Tar
- B.
Nitrogen dioxide
- C.
Carbon monoxide
- D.
Carbon dioxide
Questions: 20 | Attempts: 59265 | Last updated: Jul 7, 2021
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