1974-11-23 — Page 23

'WAH KIU YAT PO

報日僑華

日三廿月一十年四七九一滕公年三十六國民華中

閉合陳體七

潴

頁二第張六

六期星

分起來,便梢爲「窗台 许的休眠——這些組

一,同他要强温 濕、水分、分花|

須要透摂鲋蔭的花卉栽

臺,它帮助你强工作,

華

港大副校長金新宇敎授建議

育

設立學校工業中心

業調在?如果他們既無

爲負實任的人物

缺乏淸楚認識,因此極 由於對眞正育目的 不到這個目標。一般事 們在教育白皮内却 |似乎完全被摸嗎,我 不過教育基本目的强 【鵡學額及欧試等問題,

徒然增加就會問而已 近一般人特別

一份適當工作;此舉將

校 金宇教授致詞,投源及雅致彤易。

【特訊》香港區宫文 小學(英文部)昨晚 境。 工業科目授課所 則問題可完滿解决 不能期望所有學校均有工業教育設備及工業教師 若設立學校工業中心」 使區內學校均能利用之爲 認爲白皮書建議在初中增設工業教育課程 但 门,高級致脊官方黄饰泉女主體,校監 設糁工業≥心],使蔞近學觅在此修會上各問題,極少將 七時段堡壘山道金文泰山季祔行第十二屆畢業典 香港大學副校長金新宇敦没在演翁中,建織 極少教導學生去假識計 喜該我山科成立於一九五九年秋,假金交溺,七十至百分之七十五的學科學程外,亦貼有一些干學校講授若干道鋲縣 工業的成份,倘若學校能供工業場所和教職員 捏,並組織社會股務 的社會更形電凝,白皮步搖號小導致育的百分之一他們嚴樣內。不饋,方 我確信良好的初中涵才敎育在我們發展迅速一香港沚會的觀念酒

-會褂及糖

1的關閩學活!

|式上骐,目前有寫的,那緻,生們就會選修工業科目。在經濟上,。他們進行一種旅行 日校供讀的少年實爲一個良好進憐的雄會。 我們在「有存在的行為有其智動時,有時清潔海

去

到會嘉賓有香港大學英文系主任格關敩授 期 港大俁教育系講師雷諾士先生,及教育司署官員 任務雙佤,很難復到m貼。有了「學校工業中心 了?進一步來像,他們 「先生,英國文化委員會代表鞏士覺先生夫人,香 調。 - 我們雖有類似的工業群島,但因程度及能够持續多少日 大學新聞主任劉靖之先生,為仁安院校湊燃地域 心」,使就近不求的各校學頃,梅酒他們有興趣及老人。可是,他們的 | 睿禇大星工程及建築學院院髟梁維新博士,香港 因此我提議選擇某一地區設」『學校工業中 事某杻演,以娛孤兒 hi 選讀工業科目,就可利用該中心的戲瀧以接受工 熱心,能够發展到何 灘及若干霄散,戒者

王牌作校

一季的眞正意義, |常希望教師和家長們能保持密切的聯繫 - 以

而·较外

學及性 及關 背對步,

學抗機間 會值設開

一肚会,而學校只是其中的一面吧了。心理學家抱

力指和週懷

三,有中他院 的學的避效心學協 在工作舉個,樹助實用,袁

近

從目近學能生

症

再費

有况由

少被越十皮

相會,

【

E發信 到除 案 年種及五

可供現力三批香是近工

茶干茶番 最的菜和

姦無用處的,而且妨

出家庭背撼取要地從多方面對有學生的熱鰭片 533 在頂 和納緒的正常發展;因此,我家張門與校 詛不算只是一種欲望-斑是一狐醫要和利。他們本牙的前途?!

錢與

有 好校

慈幼中學校長劉曉明神父

|方共同努力,提供一個有助於青少年發展的良好 蹴

對白皮書兩項批評

氨神父有鬭概要如——香海初中會考,僅

「之基本目的被漠視。 却感到变行一新方來一場婚

* 毆正常發育及社會工作,並被關爲是一項正确開始有一根歸屬社會的 「爲學生的「其餘」,妳最歡迎的一項大進步望參加多概跟外活軸, 白皮書莚眾之裙中食考然,還是在惕香附市民 他們在這個階段的,希 靚從畢業遷歃詞,北贊 當易已签袋大努力,一概學習帶霄的階段。 校長約曉明神父前任在 【 九年之津貼 育 -政府,同時對四周環境诫 【卷〕菘幼小學童有機會獲致一項德 j 們對任何事物極感興簪 皮書更完全漠視教育基本目的 妨碍正常發育及自然生長 白 初中會考對學生有如「脚镣]

而且就某程度來說

防近踟舘, 三會考 令他們的活吻受出冊,

在這橋沉壓力下,他

柴事 討教 的心的嶼篇手 恐

激情資

話 必 及標是入,做的正

要做學問 須 素

琳·做到 法時 ?是够墨及個 √到的。微楚他將,以-

眞, 治癌 砘 寬們他我自滿?

英語以本作家朗奴列裆。

| 問題,我係其餘百份之教育的新。〔琳凵

The solid

(11)

肥,尤其是自從上月發】之中吧。 |成爲被抨解目標。就一 學童,在格上迅速發 | 教育白皮,無常 十二崴至十四歲之 香圈政府之教育師中之學生去升入公校 | 挑選百分之四十狨完英

保良局屬校畢業禮

商 教室 頁三第張六第 日十初月十年實甲屬夏

【方面舍,我們必須承

·在智力上正常發團

一,爲了廢除外中試,及一,同時在心理上備用於

甲,在一九七九年令每個

感,這個年齡,是他

頒發畢業證書

,爲盧家班夫人頒發文源。(本報記者攝

我主烈猪及主良禮三校

懶堂 偏正 兼保毒持局聯堂時於

純菜例,兼業七該计

羊助 典三局二~ 務 主際主助

庭由 盈開訓育 路由大下局

旁生 有原 下肃 調 正继

瑞林 圣 種雞 烧教: 保錘。力楧,條

助理敎育司林達鎏致詞 林夫人

夫赴以可例素

,何獲富,舉致祥,黃

多次浴?,仿爲保良局主席何銀樓。

林鍾融夫人在保良局小聯合畢業禮中頒獎

源,何忠橋、昌-施

英造

人謝發,榮歲祥李

釋,循,婆,助名引力。 一約然並包略現雷一不知首 知我善引發, 有謝各由於 能以防論一,背盒 志,生何

品句我夫 蔡濟。 病前向卻正為如战

then answer the following questions

1) Why were dead seeds used in

(ii) Why must dead seeds be dis-

infected?

(iii) What result cen you expect

after a few days?

中筒香港專欄

草橋

生物化學上之敦化作了。1的生

mouthpiece of the apparatus.

3

Bubbles and difference in levels of limewater is noted with each breath,

Breathe out

Look at the apparatus carefully,

高輝動控

门

- Dír leaves

物性營養法性營養法

營

james

中鬧會考專欄

的營潑。

的好供新

:堅道書院主編:...

生物科(甲)、廖國奕。

動作 戚有神經短熾

託佧何運動 跟動

和感覺器官和感覺器 應該感覺靈紋 放風濕機

2 dlaka, 3. Kalkan,

始

生

胭脂愛上你填地做A核

長出來。

e. (2-etunias }

10975:

中學會考專欄

;堅道書主編

5.霁生版包s ne胞質及细胞核 生物科(乙)子康。

日再论-155在4細胞有絲分裂中子 綠樹染然是A.在之赤进批

(6)细胞分裂之原因是A.傳續後代,

撥A甘油、多糖蛋白粉罩

他的時候,便有A,出现激,哎 收現排淺碗袋口說: 沒有任何現象())人箱成脚油

6. 2N; D. SN, E, AN, (10) J

11.填-

题:總出爆所描名字。

A淋出下发后

B. 2.

c.

-AKUT IN

CPA, PA, 974, HD BRAZIL

BTOLOGY R (#2)

Aaswore to Review:-

(a) (b) A. (0) E () ostë, Experiments on Hospiration, an Exj. To show that "breathed-out" air conting less oxygen than "breathed-in" air.

Exp.2. to show that "breathed out

air contains more carbon dioxide

than "breathed-iu" sir.

*xp.3. To show that carbon dioxide

is given off by germinating seeds To show that oxygen is

Exuded up during germination.

Exp.5. To show that heat ia given

Gff during respiration.

The above experiments will support what is meant by respiration.

NB. Only the apparatus and a very brief explanation is given for encl Exp.1.

graduated tube fat beginning of experiment filled with water)

gir or breath (water levetiz reduced

same as that in the banin le. approximate], atmospheric pressure)

-water

-basin

Phosphorus (smokes and used 017 ~~Copper wire

-level of water vises up da

part of air in tube is used up.

End of tube is closed with thumb and transferred to this cylinder, when thumb is removed, the tube levelled. The remaining oir is read.

This exporiment is repeated with "air" (ordinary air pumped in) and "breath" (breathed-out air). The roguit is recorded and compared. i.e. Volume of airc,

Volume of air lege 02 = bcc. Volume of 0

(a-b) c. Using this, result is then calcu lated to obtain percentage. i.e. (-b) x 100, and when the two is compared, it is seen that there is nors in "air" than in "breathed-

Breathe in out" air.

Exp.2.

dire

enters

Za durata de un

to mouth

(0)

堅慈善 書主編

物理科

□永熾

PHYSICS (2)

"hree thol-out" air and that this CO, must have been produced within

1. (a) Solution

s milky first. This

lefows the presence of C0, in

the body. (Actually, it was

produced sa a result of tissue

respiration and brought to the

Jungs by the circulating blood.)

A

C

to fifier

germinating water

lime- seeds

N.B. After getting up the apparetus check and make sure that all is secure. Air is then drawn through the whole apparatus for a few

:nutes. Note changes in colour of olution in A while B and D remain This indicates that, the

CC the incoming air bay boen dpoly in limewater as it pigned through And since 5 and L

provos that the remainedyear gerinting Thy has not beer given 2

any co, 2.

Clips wer than applied to the

bber tubes and the apparatus was left over night, Next day, air is drawn through the

This time, in which apparatus. flask will the lime water turn milky? The answer, of course 18 A and danes polution in E turned milky at end of experiment, it proved that geyminating seeds gave off 00, which in the by product of respiration.

This experiment could be ropested by changing the opeoimer in flask

Should it be replaced by a C. potted green plant, what precaution must be taken? Why? Consider the fact that green plants will carry out photosynthesis during daylight and this might confuse the issue at

The prevent photosynthesis hand. by either putting the entire apparatus in a dark place of place a light-proof covering over 0. Exp.4.

WA. Ome mistake whioh you must 20 pake when doing this experiment is to ignore the fact that you ure asked ce prove that D2 is used.up ant now that.3g is not harde信

Look at this apparatus and see if you can work out for yourself how it can be used to show that Qşin yeod up during gemination. (Explanation will be given in the next issue).

Exp.5.

air enters

-thermol flosk

或法秘讚内六哕衣術,與非出

代子與非生物之化想變

-time vider

tonkvd

Sevdy

B

Ale is breathed in (as in (i)) 比分作谢生d atau ju {{i}} through the

-·-lime water

soaked wads

dead

dis infected

Area of the shaded portion

=20x

20 m

time (sec)

The graph plotted in the dis- tance and time graph is a straight line.

The gradient is content. This indicates that the car is at uniform spoed of (200-100)/5=20m/s (i) The horizontal line on the",

velocity-time graph shows that the car le travelling with zerc acceleration.

(ii) The area ABCD measures the dia-

tance covered by the car dur ing the 2nd second which is: Area of ABCD 20, 1

20 m

(b) Distance of the quach from the the station when disconnection made, S 1.75 a

同備

*將減校實時成極的事物

Where do they collide?

(iii) Compare their velocities

2(a)

at the moment of collis107

is

晚師項及在不

crushed into powder

and packed into a capillary tube

with thin glass walls. The capill-

A long flet platform of mass 50 kgary tube is attached to the bulb

ia mounted on wheels, frictionless and rests on a horizontal surface. A 5 kg trolley with an electric motor rests on it, and both are originally at rest.

What will happen when the motor is started?

(11) What will happen if the motor

is stopped?

(111)What happens if the trolley

runs cff the platform with a velocity of 4 m/s relative:

g the ground?

A ball of mass 0.2.kg is Cehwuheertically upwards at 20m/s

plot a velocity-tine graph of the motion.

Find from the graph the dis- placement when tts and t. 4

(ii) Firegarange in momentium-

y and t = 4 B (iv) Wat is the fte of change

more during the

1975:

中學會考專欄

堅道書院主編:

化學科 茶

CHEMISTRY (#2)

陳淇杰

SOLUTIONS POKALEMISTRY (#1). Kultiple Choice Questions 7. (C) 13

thieparation problem two

of & 0-35c°c thermometer and inn

|meraed into the paraffin oil be th. The bath 13 warmed til the temp erature at which the power change. rapidly into clear liquid is reached. The temperature is then recorded.

The boiling point of the oil used Limits the temperature range that can be studied. Usually melt- |ing points. above 3000g canhot ba

determined by this method. Dus to convection currents in the oil and the rether crude way of observing the temperature, precision can

est, he'

bo + 10. As the capillary

tube is open to the atmosphere, substances that decompone, or re- act with air (0,), or of hygrosco- pic natire cannot be studied by this taboratory set 1.

Solid organic compounds are. often amorphous, if they are c13- stals they are molecular oryptzla molecules within the crystal be-

held together by wear inter moñecidar forces). Substancen ga

as sugar have melting points gene

enlly lower than 3000. Inorganic

solid are often acute compounds. thue

salts are

are crystals with he cations and anions

arranged

regularly in lattices and held to-

by strong electrostatic

sequently much highor melting points are found for sals

that of NaCl is over 800°C. e. picarbonates are u table the carbonate, yielding CO, and 1,0. Host carbonates, |the exception of sodium and pota

to heat,

with

Speed of the tmin and the coach amant sulphur, As both are solidej deconate are fairly easily

̇then, u = 60 mph.

The coach retarded and

at the station, therefor acceleration 15

Time, taken,

one

Dogs are involved: the are compound sugar and the

by jicat to he oxide and trespirat atep is to look for a

I the case of calcium curto- suitable solvert that can dissolve rate, the temperature required for

ard not the other-water is decoup sition is quite high. Whop quitable here. To separate the quickTime (C0) 1 prepared indust 90lid

from sulphur

an aqueous solu- rially in lime-kline, a temperatur filtration is needed. Sulphur as high as 500-1:00"0 10 used, the proteas naite crum on line-bar- labtein Sugar!

the filtrate is sub-ing'. jected to evaporation and crystal- lization.

2as.

tu

The train gone's St

The train web (S!+8)= » T away from the

ataticn.

The numerical value of the ini tial velocity, does not affect the answer. It will be a wastel of time in converting 60 mph into SI unit and substituting it into any equation for your anaver. In fact, the graphical solution is more preferentiel. It solves the problem speedily: as follows:

Graph A repro- sents, the mo- tion of the Locomotive.

Graph reps. the coach which came to rest at the atation at time, t distance moved by the coach distance of the train from station = 1.75 R

Questions for this week

Time Area OFR #

Area PQR =

1(a) A 1 kg- and a 2 kg-blocks are

placed on a frictionless table. A spring of negligibla mass is compressed between the two blocks until its potential energy is 12 joules. When released, the spring will drive them off in opposite

Find the velocities directions. of the two blocks when released.

(b)

thread

eandle

A and B are two bars of wood cut from the same piece. B 18 twice as long as A. They are placed on fric- tionless glass tubes as rollers. A stretched rubberband joins them but they are held apart by a threat as arranged. Their separation is neusured as 72 om apart by a metre- rule.

(a) Compare the mass of A with

thas of B.

(b) When the tread is burn: L?

(1) What can you any about the acceleration of A compared with thut of B?

titeined as the residue. To

12. (3) Aeonium nitrate

Inorganic nitrates are decom- posed by heat. The products depend on the position of the cation in the electrochemical series. The alkali-motal and alkaline earth

al aitutes (K, CB) yield the

Surrounding nitrites and oxygen.

Ritrates lower in the aeries (41, Pe) yield ths oxide, NO and On. Nitutes vary low in the series, (Fe, Ag) yield unstable oxides that further decompone to the metal In all the above cases, solil rea- dues remain. However, ammonitun nitrate yields 10 and 40 oz. heat- Ang, both beige fases at experi mental conditions no tha* no res- Que is left.

3. (0) II, TIT,

The

acid

ard ulkali given for the titnition am solutions of similar normality. à pipette io

required to deliver an exact vol-

of alkali into a condeal flyk Methyl orang is a suitable indi- cater

for string acid-strong base titrations. The

The volume of acid re- quired for neutre iuction ia poua-

red from a burette. 4. (0) Ammonium nitrite

Sulphur and iodine are element the other three are its. There

is no general similarity chenical- 1y. However, sulphur, fudine, am- moum caloride and mareuric ablo- ride all sublime when heated, and all are reversible changes. How ever, ammonium nitrite decomposed irreversibly into nitrogen and

5. (D) 10 + 303 1 320

Ford Bulpinte crystals are hydrated, of formula 230.70. On besting, the water of drystal- lization I lost, follow by decom~ position of the sulphate to the brida, 502 and 903- Conyautional Questions

1. Melting points of solids are newally determined in the labor- atory with the following arrange- ment:

cork

themometer

bulb of the rucnieter pamffin oil

QUESTIONS FOR THIS WREX

Co

The questions in this isqua are mabed to 1.4. Action of electri-

ty on materials; 1.5. Reactions with oxygen of the air 1.6. Netor 1.7. Acidio ed alkaline soluti nd Study youe Cote Und extbook !! thene sa vime before attempting the qunationalka

tiple Cholec Questiong 1. The following only tanta cel be found in a common labore downs, 1. Tron . Ferrous sulphate t |Ferrous Pulplus le aolution IV. Jrar

cont . Graptise. The cumtance/s that oan conduct electmeity is/re:

(A) I (B) T & V (C) If I & TTI (D) I, ITI & V (E) Ali the above

3. Of the following metals, which one will react moat vigorously with water?.

}

(A) Magnesium (6) Mercury (0) Cal- cium (B) Copper (E) Aluminiwa 4. An acid is any substance that (A) coutuing hydrogen (B) contains, (oxygen (c) contains hydrogen r

placeeble

ble by all metals (1) acts B & proton donor in reactions (E) provides one atom of replacca- ble hydrogen per molecule

5. In order tò dissolve only one of the two metals zinc and coppor the reagent that could be used

(A) Concentrated sulphuric acid (B) Water (C) Tilute gulphurie acid (D) Concentrated nitric acid (E) Carbonic acid

Donventional Questions

1. Solid sugar is a no-cġnductor of electric current, and solid

sodium chlorido is in effect & non-conductor of electric current Explain why molten sugar is a non. conductor, but wolten uodium chlo

ride is an excellent conductor.

2. The hypothetical avid

日

strong acid, and the hypothetical

acid B, is a weak acid. (a) Co pare equimolar aqueous solutions of HA and HB in regard to (1) cour ductivity, (2) freezing point, (3), volume of it evolved in reaction with Zu motel, (4) inte of react- ion with Zn metal. (b). Compare equimolar aqueous solution of Nah Han rugan to H ion cou- centration.

兩種不同的活金榕

她的

缀仇

EH

Faverta

un

期五八二第

·越析招主來古师,是很得老百姓愛戴的英武餵袖,他率銀娛析命的一的沙梨子親爭以長槍刺亂胸餅,送他歸正,而她自己也戰死沙

|兒將投降退

痛的力

芋 地 正刑果

【永竿在,是香

燃作

瞅 行萨

成品

,次的迎

·他們彍死卡