Microsoft Word - DSE PHY Samples.doc

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1 目錄 TABLE OF CONTENTS 前言... 1 卷一乙部第五級示例及評語... 2 第四級示例及評語... 3 第三級示例及評語... 5 第二級示例及評語... 7 第一級示例及評語... 8 卷二第五級示例及評語第四級示例及評語第三級示例及評語第二級示例及評語第一級示例及評語 Introduction Paper 1 Section B Level 5 exemplar and comments Level 4 exemplar and comments Level 3 exemplar and comments Level 2 exemplar and comments Level 1 exemplar and comments Paper 2 Level 5 exemplar and comments Level 4 exemplar and comments Level 3 exemplar and comments Level 2 exemplar and comments Level 1 exemplar and comments... 37

2 前言第一屆香港中學文憑考試的成績已於本年 7 月 20 日發布為讓教師學生以及公人士進一步了解中學文憑考試考生的水平, 本局選取個別考生的答卷, 輯錄為本套示例, 以助說明各級考生的表現本科設有兩卷筆試, 本套示例取材於其中的傳統題答卷, 以便於說明各等級考生的典型表現由於考生在多項選擇題的答案難以說明不同等級的表現, 因此未有選用作為示例參閱這套示例時, 讀者亦宜同時參考本年試卷及評卷參考, 以了解試題及評分要求有關文件刊於 2012 年香港中學文憑考試 -- 考試報告及試題專輯內 1

3 卷一乙部第五級示例及評語評語考生對物理課程所涵蓋的事實概念及原理有廣泛的認識和透徹的理解, 並能準確地運用科學辭彙, 以簡潔和有條理的方式, 有效地表達感生電動勢的產生 2

4 第四級示例及評語 3

5 評語考生對拋體運動有一定的認識和理解答案顯示考生懂得力的分解以及能量相互轉換考生能求得箭矢的飛行時間和垂直位移 4

6 第三級示例及評語 5

7 評語考生的答案展現其對運動學所涵蓋的有關概念及原理有足夠的認識和理解答案顯示考生能根據所提供的資料求得兩火車頭的間距, 動量守恆公式亦運用恰當, 然而平均撞擊力公式中所代入各項卻弄錯了 6

8 第二級示例及評語評語考生對圓周運動的有關概念及原理有基礎的認識和理解, 並能求得汽車在線道 1 上行駛的最高速率考生知道線道 2 的最高速率較低, 但未能給出圓滿解釋, 且對於路面上的油漬如何影響向心加速, 亦沒有清楚說明 7

9 第一級示例及評語 8

10 評語考生能記憶物理課程中較淺易的事實及原理答案顯示考生能求得水蒸氣所釋放出的熱量, 然而考生卻未能適當代入比熱容以計算鮮奶泡沫的温度 9

11 卷二第五級示例及評語 10

12 評語考生對物理課程所涵蓋的事實概念及原理有廣泛的認識和透徹的理解, 並能準確地運用科學辭彙, 以簡潔和有條理的方式, 有效地闡釋可再生能源的意思和選用原則 11

13 第四級示例及評語 12

14 評語考生對醫學物理有一定的認識和理解答案顯示考生懂得求超聲波在骨骼與軟組織中的速率之比 ; 考生對超聲波 B- 掃描成像的操作原理有足夠認識 13

15 第三級示例及評語 14

16 評語考生的答案展現其對天文學所涵蓋的概念及原理有足夠的認識和理解答案顯示考生能推導恆星的半徑表面溫度和光度相互關係的等式, 考生亦能指出參宿四的半徑怎樣跟光度改變 15

17 第二級示例及評語 16

18 評語考生對能量的有關概念及原理有基礎的認識和理解, 並能求得地球表面所接收到的太陽能功率 ; 對於可再生能源, 考生亦有一定的認識然而考生誤以為太陽能電池是將光能和熱能轉換為電能 17

19 第一級示例及評語 18

20 評語考生能記憶物理課程中較淺易的事實及原理考生能寫出玻爾氫原子模型兩個非古典的公設, 然而考生卻未能處理涉及氫原子躍遷的問題 19

21 INTRODUCTION The results of the first HKDSE Examination were released on 20 July To enhance the understanding of the standards of the HKDSE Examination, authentic samples of candidates scripts are selected to form this set of exemplars to illustrate the performance standards at different levels. There are two written papers in this subject. This set of exemplars is selected from candidates scripts of the conventional papers to illustrate the typical performance standards at different levels. As candidates MC responses cannot illustrate well their performance standards, exemplars have not been selected from these sections. It is advisable to read this set of exemplars together with the question papers and the marking schemes in order to understand the requirements of the questions and the marking criteria. The question papers and the marking schemes are published in the Examination Report and Question Papers for 2012 HKDSE Examination. 20

The candidate communicates effectively using correct terminology of physics such

22 Paper 1 Section B Level 5 exemplar and comments Comments The candidate s response shows an extensive knowledge and clear understanding of electromagnetic induction. The candidate communicates effectively using correct terminology of physics such as rate of change of magnetic flux to account for the induced e.m.f. generated. 21

23 Level 4 exemplar and comments.. 22

Comments The candidate s response shows a sound knowledge and clear understanding of concepts and principles relating to projectile motion.

24 Comments The candidate s response shows a sound knowledge and clear understanding of concepts and principles relating to projectile motion. He/she also manages the resolution of forces and understands the inter-conversion of energy. He/she is able to find the time of flight and vertical displacement of the arrow. 23

25 Level 3 exemplar and comments 24

26 Comments The candidate s response shows an adequate knowledge and understanding of facts, concepts and principles relating to kinematics. He/she is able to deduce the separation between the two trains using the information given. The momentum conservation equation is appropriately applied though the speed of Train A just before collision is wrongly identified. 25

27 Level 2 exemplar and comments Comments The candidate s response shows a basic knowledge and understanding of the concepts and principles of circular motion. He/she is able to find the highest speed of the car in lane 1. The candidate explained the difference in the highest speed in lane 2 using an appropriate equation of circular motion. However, errors are evident such as his/her stating that friction increases with oil patches on the road surface and the incorrect argument that follows. 26

28 Level 1 exemplar and comments 27

29 Comments The candidate s response shows an elementary knowledge of heat. He/she is able to obtain the heat released by steam. However, the candidate fails to find the temperature of the frothy milk as the energy released by 100 C water is omitted. 28

30 Paper 2 Level 5 exemplar and comments 29

31 Comments The candidate s response shows an extensive knowledge and clear understanding in medical physics. The candidate communicates effectively using correct terminology of physics to describe the working principles of ultrasound B-scan. 30

32 Level 4 exemplar and comments 31

33 Comments The candidate s response shows a sound knowledge and clear understanding of concepts and principles in astronomy. He/she manages to derive the equation involving radius, surface temperature and luminosity of stars. He/she is able to point out how the radius of Betelgeuse changes with its luminosity. The limitation of the method of parallax is also well understood. 32

34 Level 3 exemplar and comments 33

35 Comments The candidate s response shows an adequate knowledge and understanding of facts, concepts and principles involving energy. He/she is able to find the solar power reaching the Earth s surface. The energy conversion of the solar cell is correctly stated. The candidate knows that solar power is a renewable energy source but he/she fails to identify another one that is feasible for use in Hong Kong. 34

36 Level 2 exemplar and comments 35

37 Comments The candidate s response shows a basic knowledge and understanding of the concepts and principles involving energy. He/she is able to find the solar power reaching the Earth s surface. The meaning of renewable energy is also well understood. However, errors are evident such as his/her stating that the solar cell converts heat and light energy to chemical energy. 36

38 Level 1 exemplar and comments 37

39 Comments The candidate s response shows an elementary knowledge of atomic physics. He/she is able to state the discrete nature of atomic spectra and calculate the energy of an ultraviolet light photon. However, the candidate fails to handle the parts involving transitions within an atom. 38

東莞工商總會劉百樂中學

東莞工商總會劉百樂中學 /2015/ 頁 (2015 年版 ) 目錄 : 中文 1 English Language 2-3 數學 4-5 通識教育 6 物理 7 化學 8 生物 9 組合科學 ( 化學 ) 10 組合科學 ( 生物 ) 11 企業會計及財務概論 12 中國歷史 13 歷史 14 地理 15 經濟 16 資訊及通訊科技 17 視覺