2627-ALAM-S3-SUM-QUIZ-1
Section A: Physics (15 minutes, 30 marks)甲部：物理（15 分鐘，30 分）
1Answer all parts below.回答以下各部分。
[18]
(a)In each triangle below, find the quantity marked with a letter. Give each answer to 3 significant figures.在下列每個三角形中，求以字母標示的量。答案須以三位有效數字表示。
Bounded answers · auto-marked on submit限定答案 · 提交後自動批改
(b)Solve each equation for the unknown. Give each answer to 3 significant figures.解出下列各方程中的未知量。答案須以三位有效數字表示。
(c)Complete each unit conversion.完成下列單位換算。
Exact numeric fields · auto-marked on submit數值欄位 · 提交後自動批改
Section A: Physics (15 minutes, 30 marks)甲部：物理（15 分鐘，30 分）
2A student pours different volumes V of a liquid into a measuring cylinder and records the mass m of the liquid alone. The results are shown below.一名學生把不同體積 V 的液體倒入量筒，並記錄液體的質量 m。結果如下。
[12]
| V / cm³ | 10 | 20 | 30 | 40 | 50 |
|---|
| m / g | 8.2 | 15.9 | 24.3 | 31.8 | 40.2 |
|---|
(a)Plot m against V on the hard-copy question paper you received. Choose a scale that allows V up to 80 cm³.在你收到的實體試卷上把 m 對 V 作圖。所選的比例須容納 V 至 80 cm³。
[2]
(b)Label both axes with the quantity and its unit, and give the graph a title.在兩條軸上標明物理量及其單位，並為圖像加上標題。
[2]
(c)Draw the best-fit line for your points.為你的數據點畫出最佳擬合線。
[1]
Graph · self-check only · 0 demo marks圖像 · 僅供自行核對 · 示範中不計分
Enter every bounded answer online.請在網上輸入每項限定答案。
Free-text graph reasoning remains available for practice but does not add to the /70 demo score. Its model answer appears only after submission.圖像推理的自由作答欄可供練習，但不會計入 70 分的示範分數；參考答案只會在提交後顯示。
(f)The student now wants to predict m when V = 70 cm³. State how you would obtain this value, and give the value.該學生現需求當 V = 70 cm³ 時的 m。說明你會如何從圖像取得這個值，並寫出該值。Open graph response · self-check only · 0 demo marks圖像開放式答案 · 僅供自行核對 · 示範中不計分
[2]
(g)The student repeats the measurements, but now weighs the liquid together with the measuring cylinder, which has a mass of 20 g.該學生重複量度，但今次連量筒一起稱重，量筒的質量為 20 g。
End of Section A甲部完
Section B: Chemistry (15 minutes, 30 marks)乙部：化學（15 分鐘，30 分）
3One entry in each row is given. Complete the table below. Each correct entry earns half a mark. Give each name in English.完成下表。每行已給出其中一項。每答對一項得半分。
[10]
20 exact fields · auto-marked on submit20 個限定欄位 · 提交後自動批改
Section B: Chemistry (15 minutes, 30 marks)乙部：化學（15 分鐘，30 分）
4Draw the nucleus of each of the following atoms. Label each proton with p and each neutron with n.畫出以下每個原子的原子核，並把每個質子標示為 p，每個中子標示為 n。
[6]
(a) 32He [3]
0p · 0n
(b) 115B [3]
0p · 0n
Use the tokens to think through each nucleus if helpful. Drawing and labelling carry 0 marks in this free demo; the model answer appears only after submission.如有需要，可使用粒子標記協助思考。繪圖及標示在免費示範中不計分；參考答案只會在提交後顯示。
Nucleus drawing · self-check only · 0 demo marks原子核繪圖 · 僅供自行核對 · 示範中不計分
Section B: Chemistry (15 minutes, 30 marks)乙部：化學（15 分鐘，30 分）
5Answer both parts below.回答以下兩部分。
[14]
(b)Complete the table below for the following particles. Each row is worth 2 marks: 1 mark for a partly correct row, 2 marks only if the whole row is correct.為下列粒子完成下表。每行佔 2 分：該行部分正確得 1 分，整行完全正確方可得 2 分。
[10]
Keyboard format for a full nuclide symbol: mass/atomic symbol, for example carbon-12 is 12/6 C.完整核素符號的鍵盤格式：質量數／原子序 元素符號，例如碳-12 寫作 12/6 C。
Row-scored table · auto-marked on submit按行計分表格 · 提交後自動批改
End of Section B乙部完
Section C: Biology (15 minutes, 30 marks)丙部：生物（15 分鐘，30 分）
6A student is investigating how light affects the eating habits of mice. The procedure for the investigation is as follows:一名學生正在調查光線如何影響老鼠的飲食習慣。調查的程序如下：
[30]
- Place a mouse and a plate containing 50 g of food into each of two plastic boxes (Box P and Box Q).將一隻老鼠和一盤裝有 50 g 食物的盤子分別放入兩個塑膠盒（盒 P 和盒 Q）中。
- Cover the walls of Box P with aluminium foil.用鋁箔覆蓋盒 P 的內壁。
- Place a lamp on top of each box and switch them on.在每個盒子上方放置一盞燈並開啟。
- At 1-hour intervals, remove the plate in each box and replace it with a new plate containing 50 g of food.每隔 1 小時，將每個盒子中的盤子取出，並更換為一盤新的裝有 50 g 食物的盤子。
- Record the mass of the food on the plates for 6 hours.記錄 6 小時內盤子上食物的質量。
| Time / h時間（小時） | Mass of food on plate in Box P / g盒 P 盤子上食物質量／g | Mass of food on plate in Box Q / g盒 Q 盤子上食物質量／g |
|---|
| 1 | 50 | 35 |
| 2 | 48 | 34 |
| 3 | 49 | 38 |
| 4 | 50 | 32 |
| 5 | 50 | 37 |
| 6 | 50 | 35 |
(c)Complete the table below for the variables of this investigation.為這項調查的變量完成下表。
[6]
Open variable wording · self-check only · 0 demo marks變量文字作答 · 僅供自行核對 · 示範中不計分
(d)Calculate the average mass of food eaten per hour in each box.計算每個盒子中每小時吃掉食物的平均質量。
[4]
(f)Write the letter of the correct reason beside each feature. Each letter may be used once only, and one reason is not used.在每項特點旁寫出正確原因的代號。每個代號只可使用一次，其中一個原因不會被使用。
[4]
A. To keep the temperature inside the two boxes the same.使兩個盒子內的溫度保持相同。
B. To create the difference in light intensity that is being tested.製造出所要測試的光強度差異。
C. To make sure any difference is not caused by the food itself.確保任何差異並非由食物本身造成。
D. To allow the mass of food eaten in each hour to be found.使每小時所吃食物的質量可以求得。
E. To make sure the two mice have the same body mass.確保兩隻老鼠的體重相同。
| Feature of the set-up裝置的特點 | Reason原因 |
|---|
| The walls of Box P were covered with aluminium foil.盒 P 的內壁以鋁箔覆蓋。 | |
| A lamp was switched on above BOTH boxes.兩個盒子上方的燈都開啟。 | |
| The plates were replaced every hour.每小時更換一次盤子。 | |
| The same type of food was used in both boxes.兩個盒子都使用相同種類的食物。 | |
(h)In each set-up below, complete the sentence. Circle the correct answer where a choice is given.在以下每項裝置中完成句子。如有選項，圈出正確的答案。
Bounded fields auto-marked · Q6(c) self-check only限定欄位會自動批改 · 第 6(c) 題僅供自行核對
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