DSE PHY Samples - HKEAA...The candidate’s response shows an elementary knowledge of atomic...

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TABLE OF CONTENTS .................................................................................................................................. 1 ............................................................................................ 2 ............................................................................................ 3 ............................................................................................ 5 ............................................................................................ 7 ............................................................................................ 8 ............................................................................................ 10 ............................................................................................ 12 ............................................................................................ 14 ............................................................................................ 16 ............................................................................................ 18 Introduction ......................................................................................................................... 20 Paper 1 Section B Level 5 exemplar and comments ............................................................................... 21 Level 4 exemplar and comments ............................................................................... 22 Level 3 exemplar and comments ............................................................................... 24 Level 2 exemplar and comments ............................................................................... 26 Level 1 exemplar and comments ............................................................................... 27 Paper 2 Level 5 exemplar and comments ............................................................................... 29 Level 4 exemplar and comments ............................................................................... 31 Level 3 exemplar and comments ............................................................................... 33 Level 2 exemplar and comments ............................................................................... 35 Level 1 exemplar and comments ............................................................................... 37

Transcript of DSE PHY Samples - HKEAA...The candidate’s response shows an elementary knowledge of atomic...

Page 1: DSE PHY Samples - HKEAA...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

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 ............................................................................................ 10 第四級示例及評語 ............................................................................................ 12 第三級示例及評語 ............................................................................................ 14 第二級示例及評語 ............................................................................................ 16 第一級示例及評語 ............................................................................................ 18

Introduction ......................................................................................................................... 20

Paper 1 Section B

Level 5 exemplar and comments ............................................................................... 21 Level 4 exemplar and comments ............................................................................... 22 Level 3 exemplar and comments ............................................................................... 24 Level 2 exemplar and comments ............................................................................... 26 Level 1 exemplar and comments ............................................................................... 27

Paper 2

Level 5 exemplar and comments ............................................................................... 29 Level 4 exemplar and comments ............................................................................... 31 Level 3 exemplar and comments ............................................................................... 33 Level 2 exemplar and comments ............................................................................... 35 Level 1 exemplar and comments ............................................................................... 37

USER
反白
Page 2: DSE PHY Samples - HKEAA...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

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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 。

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卷 一 乙 部

第五級示例及評語

評語評語評語評語

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。

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第四級示例及評語

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評語評語評語評語

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 。

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第三級示例及評語

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評語評語評語評語

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 。

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第二級示例及評語

評語評語評語評語

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 。

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第一級示例及評語

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評語評語評語評語

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 。

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卷 二

第五級示例及評語

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評語評語評語評語

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 闡 釋可再生 能源的意思和 選 用 原則。

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第四級示例及評語

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評語評語評語評語

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 。

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第三級示例及評語

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評語評語評語評語

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。

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第二級示例及評語

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評語評語評語評語

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 。

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第一級示例及評語

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評語評語評語評語

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 。

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INTRODUCTION The results of the first HKDSE Examination were released on 20 July 2012. 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.

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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.

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Level 4 exemplar and comments

. .

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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.

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Level 3 exemplar and comments

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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.

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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.

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Level 1 exemplar and comments

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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.

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Paper 2

Level 5 exemplar and comments

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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.

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Level 4 exemplar and comments

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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.

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Level 3 exemplar and comments

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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.

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Level 2 exemplar and comments

Page 37: DSE PHY Samples - HKEAA...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

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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’.

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Level 1 exemplar and comments

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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.