九記科學人: 2017

2017年11月5日星期日

Form 2 Workbook answers

Form 2 Workbook answers

Ch9:
https://drive.google.com/file/d/1x-hwreyjXkfxkVzt8lq6t19RR6Wv858l/view?usp=sharing

Ch10:
https://drive.google.com/file/d/1Auvf_zp2V-bRUU4M2bKPOJZpmLMByJEt/view?usp=sharing

Ch11:
https://drive.google.com/file/d/1TEzC-ftSxGryWifg1ZwXtDCHmC0DUlxb/view?usp=sharing

2017年10月26日星期四

1718-F2-IS-WS answers

1718-F2-IS-WS answers:

https://drive.google.com/drive/folders/0B_gu6NfmHHGWbTFoTDA0TXVTc2c?usp=sharing

2017年7月21日星期五

Form 1 bridging worksheet answers

BWS 01:
https://drive.google.com/file/d/0B_gu6NfmHHGWbmdlVzFJdUJ1Vlk/view?usp=sharing

BWS 02:
https://drive.google.com/file/d/0B_gu6NfmHHGWYUdwaDZJMWJGNjQ/view?usp=sharing

2017年6月13日星期二

Final Examination Revision Exercise II (Answers)

Kowloon Tong School (Secondary Section)

F. 2 Integrated Science

Final Examination Revision Exercise II (Answers)

Multiple Choice Questions

1. C	2. B	3. D	4. C	5. A
6. B	7. C	8. A	9. A	10. A
11. D	12. D	13. B

Fill in the Blanks

1. (a) receptors

(b) chemicals

2. (a) larger

(b) light

3. (a) dim

(b) bright

4. (a) thicker

(b) short sight

5. (a) concave

(b) convex

6. heredity

Question

(b) The size of the pupil in his eyes may change because the brightness of his room and the

fire of the building may be different.

(a) (i) Lens

(ii) Retina

(b) Inverted and smaller than the object

retina in the eyes, and such distance does not change during focusing.

(d) When watching a near object, the lens becomes thicker; when watching a distant

object, the lens becomes thinner.

(e) Convex lens. Long sight.

Final Examination Coverage and Revision Exercise Answers

Part A: Fill in the blanks / Fill in the tables

1. start

2. direction

3. speed

4. spring balance

5. newton

6. Contact

7. Non-contact

8. Friction

9. opposes

10. contacting

11. resistance

12. cushion

13. lubricant

14. rollers

15. bearings

16. streamlined

17. gravity

18. pulling

19. non-contact

20. weight

21. matters

22. newton

23. Acids

24. Alkalis

25. soapy

26. Hydrochloric

27. Sodium hydroxide

28. Corrosive

29. indicator

30. natural

31. Litmus 31. Red

32. Red

33. Blue

34. Blue

35. neutral 35. alkaline

36. Universal indicator

37. degree

38. pH paper

39. pH value

40. pH scale

41. hydrogen

42. corrosive

43. ‘pop’

44. calcium carbonate

45. carbon dioxide

46. lime water

47. Acid rain

48. sulphur dioxide

49. nitrogen oxides

50. power station

51. corrode

52. photosynthesis

53. solar / nuclear / water

54. catalytic converters

55. stimuli

56. sense organs

57. eye

58. sight

59. sound

60. chemicals in air

61. smell

62. tongue

63. skin

64. lens

65. image

66. pupil

68. small

69. large

70. light receptors

71. cones

72. rods

73. instruments

74. close

75. telescope

76. small

77. microscope

78. blind spot

79. short sight

80. long sight

81. distant

82. near

83. thick

84. short

85. concave

86. cataract

87. colour-blindness

88. cloudy

89. cones

90. artificial

Part B: Label the diagrams

Cornea Retina

Iris White protective coat

Pupil Yellow spot

Lens Blind spot

Optic nerve

Sectional Exercise
Section 11.1
A. Concept checking p.61
1. False
2. True
3. True
4. False
5. True

B. Questions p.61
1. (a) sight; eyes
(b) hearing; ears
(c) heat; skin
(d) smell; nose
(e) taste; tongue
(f) touch; skin
2. (a) Eyes, tongue or nose
(b) Nose or skin
(c) Tongue
(d) Skin
(e) Ears
(f) Nose or tongue

Section 11.2
A. Concept checking p.62
1. False
2. True
3. False
4. False
5. False

B. Multiple choice p.63
1. C
2. A
3. D
4. D

C. Matching p.64
(a) i, iv
(b) ii, iii
(c) ii, iv
(d) i, iii

D. Questions p.65
1. (a) A : cornea B : iris
D : pupil E : lens
G : retina H : yellow spot
I : blind spot J : optic nerve
(b) (i) A, C , E and F
(ii) G
(iii) E
(c) It protects the eyeball and gives it shape.
2. (a) R
(b) Q
(c) P, R and S

Section 11.3

A. Concept checking p.67

1. True

2. False

3. False

4. False

5. True

B. Matching p.67

(a) Telescope; i, iv

(b) Binoculars; i

(d) Light microscope; iii

Section 11.4

A. Multiple choice p.68

1. B

2. D

3. A

4. A

5. D

B. Fill in the blanks p.70

(a) (i) near

(ii) thin

(iii) short

(iv) convex

(b) (i) certain colours

(ii) cones

(ii) artificial lens

(d) (i) distant

(ii) thick

(iii) long

(iv) concave

Integrated Exercise

A. Multiple choice p.84

1. D

2. C

3. D

4. B

5. C

6. A

7. D

8. C

B. Fill in the blanks p.90

1. (a) sight

(b) light receptors

(d) optic nerve

(e) blind spot

C. Questions p.91

1. (a) Stimulus/stimuli: Temperature of water

Sense organ(s): Skin

Sense(s): Heat and cold

(b) Stimulus/stimuli: Chemicals / citric acid / lemon juice in the drink

Sense organ(s): Tongue

Sense(s): Taste

Sense organ(s): Nose

Sense(s): Smell

(d) Stimulus/stimuli: Light and sound / thunder and lightning

Sense organ(s): Eyes and ears

Sense(s): Sight and hearing

2. (a) P : lens; Q : cornea; R : iris; S : optic nerve

(b) (i) P , Q and T

(ii) This allows light to pass through.

(d) (i) This point is called the blind spot.

(ii) No, we cannot see the object. The reason is that there are no light receptors on

the blind spot, no signals are produced when the light from an object is focused on it.

Quick Review

A. Sensing the environment p.97

(a) stimuli

(b) receptors

(d) senses

(e) responses

B. Our senses p.97

(b) (i) sound receptors

(ii) cochlea

(ii) nose

(d) (i) taste receptors

(ii) taste bud

(e) skin

Workbook Answers: Ch10 Quick Review

Quick Review
A. The pH scale p.54
(a) hydrochloric acid
(b) orange juice
(c) distilled water
(d) glass cleaner
(e) sodium hydroxide
(f) acidity
(g) neutral
(h) alkalinity

B. Reactions of acids with various substances p.54
(a) (i) iron
(ii) zinc
(iii) magnesium
(iv) Hydrogen
(v) warm
(vi) heat

(b) (i) marble
(ii) limestone
(iii) Carbon dioxide

C. Causes and effects of acid rain p.56
(a) sulphur dioxide
(b) nitrogen oxides
(c) acids
(d) rivers
(e) lakes
(f) acidic
(g) corrode

Workbook Answers: Ch10 Integrated Exercise

Integrated Exercise
A. Concept checking p.45
1. True
2. False
3. True
8. False
9. True
10. False

B. Multiple choice p.45
1. C
2. B
3. B
4. C
5. A
7. A
8. D

C. Questions p.48
1. (a) Solution A: vinegar
Solution B: rainwater
Solution C: soap solution
Solution D: lime water
(b) Its pH value may be between 8.8 and 12.3.

2. (a) Indicators P and T
(b) Indicators Q and R are blue in ammonia.
(c) Indicator Q is yellow in both acids. Indicator S is colourless in both acids.
(d) Indicator P is yellow in ethanoic acid and in sodium hydroxide.
(e) Indicator P is red in a solution with a pH value equal to or less than 2. Indicator T is yellow
in a solution with a pH value in between 2 and 8. If a solution looks red after adding
indicator P and yellow after adding indicator T, it means that the solution has a pH value
of about 2.

3. (a) Red
(b) Concentrated hydrochloric acid gives off an acidic vapour. The acidic vapour dissolves in
the water in the moist blue litmus paper and turns the litmus paper red.

4. (a) Colourless gas bubbles are given out.
(b) (i) The lime water turns milky.
(ii) The gas released in the reaction is carbon dioxide.
(c) Marble / calcium carbonate / other carbonates

2017年6月12日星期一

F2 IS 2nd Term QZ 09: 11.1 anwers

11.1

Word Translation (10 marks)

i Write down the English terms of the following Chinese terms:

	Chinese term	English term
1	腦	Brain
2	探測 / 感應	Detect
3	詮釋	Interpret
4	神經	Nerve
5	感受器	Receptor
6	作出反應	Respond
7	感覺	Sense
8	感覺器官	Sense organ
9	敏感	Sensitive
10	刺激	Stimuli

Multiple Choice (5 marks)

Circle the letter of the best answer for each question.

1. To living things, a change in the surroundings is called a __________________ .

A. sense B. stimulus C. response D. sense organ

2. Which of the following descriptions about sense organs are correct?

(I) Sense organs contain receptors.

(II) Sense organs can produce senses.

(III) Sense organs can produce signals.

A. (I) and (II) only B. (I) and (III) only C. (II) and (III) only D. (I), (II) and (III)

3. Which of the following is NOT a stimulus concerned with air that can be detected by humans?

A. temperature of air B. movement of air

C. vibration of air D. oxygen concentration of air

4. Which of the following is important for living things to survive?

(I) find mates (II) find shelters (III) escape from dangers

A. (I) and (II) only B. (I) and (III) only C. (II) and (III) only D. (I), (II) and (III)

5. Which of the following is/are a sense organ(s)?

(I) Skin (II) Brain (III) Tongue

A. (I) only B. (II) only C. (III) only D. (I) and (III) only

Fill in the Blanks (20 marks)

1 Changes in the environment are called (1) stiumli. Living things can

(2) detect and (3) respond to them.

2 By responding to stimuli, living things can find (4) food / shelter / mate and escape from dangers.

3 We have five different (5) sense organs. For example,

l eye detects (6) light and produces sense of (7) sight;

l ear detects (8) sound and produces sense of (9) hearing;

l nose detects (10) chemicals in air and produces sense of (11) smell;

l (12) Tonge detects chemicals in food and produces sense of (13) taste;

l (14) Skin detects things in contact with the skin and produce sense of heat, cold, touch, pain and pressure.

4 Different sense organs contain special kinds of cells called (15) receptors

which are (16) sensitive to particular kinds of stimuli. They detect stimuli and

send signals to our (17) brain through (18) nerve.

5 The brain (19) interprets signals and gives us (20) senses.

Challenging Questions (Bonus 2 marks)

1. A person has normal eyes but cannot see well. Why?

Even the eye is normal, the person still cannot see well if his nerve and brain related to the sight has damage.

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2017年11月5日 星期日

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2017年11月5日星期日

2017年10月26日星期四

2017年7月21日星期五

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