1966-12-11 — Page 20

四第五第

OTSATETRA):

WAH KIU YAT PO

日期

一十月二十年六六九一层公年五十五四氏華中

刮眼英文中學會考試題預習專欄

九六七年

地理科

陳麗莉®

(六)

林少華

PENANG

GEOGRAPHY (6)

LAM SHIU WAH

3.[8] Draw two labelled diagrams to show the accurance

of solar and lunar eclipses.

LILY CHAN &

僑 育教華

中文中學會考試題預習專欄

THE

SUN

'gaLAR Eol*P5V.

THE

Eart!'s

Shadow

MOON.

生物科(六)

關承浩

生物試題(二)

第二部解答

第二部(在試題紙上作答)

CIS煕雄出隱藏單細胞侑物(1)旗球(2)新月藻(3)

、(4)卷範菌。

(2)武舉出四胞呲物(1)哋形蟲 (2)草度蟲、(3)環蟲,(4)夜光蟲。

(3)細胞運動方法有四(1)川流運動,(2)郵形運動(3)批毛運動,(4)收縮運動

(4)一公分 酸類對以產生4.1大卡戀情。

一公分白質可以產生4.1大卡類型。

moon's shadow

THE

EARTH

THE ED

SHADOW

EARTH

LUNAR ECLIPSE

(b) Explain briefly why these eclipsea are formed.

Solar Eclipse: The obscuration of the light of the sun when the moon, passing between earth and sun, casts her shadow on the floor. It can thus occur only at the new moon, when the moon is in conjunction, but it does not occur at every new moon because of inclination of the moon's orbit. to the plane of the Ecliptic. If the sun is com- pletely obscured, there is said to be a total ecli- pse, if partially, a partial eclipse; when the moon's shadow does not even reach the earth, an annular eclipse is given--a ring of light is visi- ble round the circular disc of the moon. Solar eclipses are much more frequent than lunar eclipses, "but they can be seen only over a very limited area.

Lunar Eclipse: The obscuration of the light of the moon when the earth, passing between. sun and moon, casts her shadow on the latter. It can thus occur only at the time of full moon, when the moon is in opposition. Because the moon's orbit is not in the plane of the Ecliptic but is inclined at about 5% to it, so it does not occur at every full moon. When the moon is completely obscured, it is said to be total eclipse, if par tially, a partial eclipse. Lunar eclipses are far less frequent than solar eclipses, but the eclipse can be seen from places where the moon is above hori zon at the time of eclipse;

What are the three main classes of rock?:

How were they formed and what are their characteristics?

The three main classes of rocks are Sedimentary, Igneous and Metamorphic rocks. Sedimentary rocks cover three quarters of the entire surface of the earth, They were formed by the de pos tion of materials transported by water, ice and wind and laid down on land in estuaries, riverbeds, Lakes and seas, They were laid down in distinct layera r strata, separated by Bedding Planes, and they are therefore known as stratified rocks. Formerly they were sediments mixed up with sands, gravels, and mud These loose particles are bound together by silica At the beginning sedimentary rocks are loose and unconsolidated masses, such as mud and sands, they later become consolidated by compression due to the pressure of the upper layer. e.g., chalk and limestones clay, sandstone. The strata, which vary in thickness from a few inches to several feet, are sometimes horizontal, sometimes tilted. Sedimentary rocks con- taining a high proportion of silica a said to be acid, those with a low proportion are basic.

are

Sedimentary rocks formed by the deposition or land-derived materials are sandstones (hardened sands), Shales (fire-grained and thinly-bedded mud or clay), grita (coarse-grained sanstones), conglomerates (nasses of pebbles and shingles cemented together), Breccias (sharp, angular rock-fragments). In addition

Sedimentary rocks may be formed by the deposit ton on the sea floor of the remains of microscopic sea plants or an made. The principis types of these rocks are

and carboniferous- calcareous chalk and limestones and coal (vegetable origin) ▶ Finally, sedimentary rocks are formed by the deposition of fine sand by the dust laden winds. e.g. loess.

Igneous locks are crystalline rocks which have soli- dified from former molten material (Magma). They may have solidified after reaching the surface (Lavas or

channels connecting the moltenj volesnic rocke), or in c reservoirs with the exterior (Hypabyssal Hocks), or well below the surface under pressure (Plutonic or Abyssal Rocks). Most of the rocks are a mass of Interlocking crystals and do not accur in distinct bed or strata. Many are many in appearance or

Examples of volcanic rocka ara finely crystalline.

volcanic glase (pitchstone) pumice and basalt. The crystalline structure is more evident in the case of the plutonic rocks e.g. granite Llarge pink felspar crystals) syenite and gabbro. Metamorphic rockeware rocks whose structure and texture have been altered by heat and impact; thus shales are charged into siates, slates into schiets, limestones into marbles, sandstones into quartzites and granite into grecies. Some metamorphle rocks schist develop oriented texture and some eg. gneiss develop banded texture produced by platy or columna i minerals Other metamorphic rocks eg, slate under the influence of moderate stresses without marked rise of temperature develop slaty cleavage..

tin and rUNDør (a) Draw a sketch map to show the

belt in Malaya.! (b) Explain why this belt is limited in ar

Describe the methods of tin Ang (8)

used in Malaya

(b)

(c)

PORT SWETTENHA

KUALA LUMPUR

The Tin & Rubber Belt

Lond over 600 Pent

THE TIN & RUBBER BELT IN MALAYA

אז.

The tin and rubber belt is limited to the western foothills of the Main Range since this is the chief tin-mining and rubber producing region in Malaya. It is also the densely populated region.

In Malaya, the major part of the tin ore reserves is found in this region. The granite Main Range is rich in tin ore. During its forma- tion, when the magma cooled down to form granite, cracks appeared in it and in the adjacent rocks. When these cracks extended downwards into the hot tin-bearing liquid, the tin-bearing liquid shot up along the cracks and cooled down to form tin- bearing lodea (in the case of large cranks) or veins

After a long (In the case of small cracks). period of erosion, the sedimentary racks covers the granite ranges were eroded and the granite beneath showed through. Sand and gravel contai ing grains of tin ore from the eroded lodes and veins were carried down the hill slopes by rain and rivers. As tin-ore grains are heavy, they were laid down in the plains not far from the Main Range, Such tin ore laid down in the allu- vium is called alluvial tin. Thus, the western foothills of the Main Range are rich in tin and form a tin belt.

In this tin belt, conditions are ideal for the growing of rubber which is the most important crop grown in Malaya. The climate here is hot and wet with a temperature of 70°F throughout the year and with over 60-Inches of vital Cannualay and without any dry sertion, capart from the clima- tic conditions, rubber requires well-drained land so that the foothills are ideal growing places. Furthermore, the foothills are above the swampy lands of the coast and are most suitable for the development of roads and railways. Thus there is easy transport in conveying the sheet rubber and latex to the ports of Penang, Port Swettenham and Singapore by road or by railway.

There are several methods of mining tin in

Malaya.

In obtaining alluvial tin, dredging is used. In fact, this is the most important method of tin- mining in Malaya; more than half the tin is mined by dredges, which are large floating ships. Each dredge has an endless chain of steel buckets that elevates the tin bearing materials from the river beds to the e concentrating plant inside the dredge which separates the tin and deposits tin tailings from the opposite end.

Gravel pumping is the second important method. This operates in smaller pite. Water is let into the mines. The loosened material containing allu- vium and in ore is then carried by the water in a smaller stream towards a pump. The pump sucks the waterwith its alluvium and tin ore on to a Dalong for separation purposes,

A similar method is

Is used to obtain semi-con·· solidated tin concentrates. It is hydraulic min- ing. By it, streams of water under high pressure are forced out from pipes, striking against the mountain sides to break up the gravel. The water carries the broken particles down to a large sluice box for separation purposes.

Another method is Tulang wahing. It is usual ly done by women, who use dulange, which are shallow pans, to scoop up alluvium and water. A rotary motion is used to separate the lighter minerals Which we gradually tipped out of the dulang with the water, , thus leaving the heavier,

behind. minerals, ingluding the

ore,

In mining lode or vein tin, open-cast mining is used, The ore is scooped out of the ground or removed from the ground by dipping large pits or quarries into the land surface.

Another method is underground mining, which 1s the least important method since the tin in Malaya occurs chiefly as alluvial deposits. Wher underground mining is necessary, shafts or tunnels are sunk to reach the tin-bearing veins. The are is then brought out from the mine and processed at the mine top.

Question for next 7th Issue:-

How is fold mountain formed? Cite an example from the fold mountain of Asia

14. Write notes on the following terms;

(1) horst (11) dissected plateau (iii) allluvial flood plain

15. Compare and contrast Ceylon and Java under the

following headings:-

Physical features

Climate

Crops growEL -

Chief towns andɑports.

Illustrate your anever with

一公分 脂肪 可以產生9.3大卡熱量。

(5)酵母菌的生藏方法有两腿(1)出芽生爐

(6)面港植物身體可以分為:(1)根,(2)

六稚器官。

(2)胞子生效• (3)

(4) (5)果實,(6)槌子

(7)雜管可以分露:(外)段皮部;(中)形成府;(內)木質部三部 *

(8)租于萌發所歧開的條件官*(1)適宜溫度(2)水份,(3)-

足氣絕 (9)盒子的胚胎可以分為:(1)芽;(2)露;(3)胚機;(4)于蔬。

(10)水姐的運動方式有:(1)肪斗運動 (2)爬行運動,(3)利用基盤伸縮而清點,

(4)利用觸指逛,而能在水中车游• (1)水想的生殖方法有:(1)生芽生殖(無性)(2)配于生殖(有)。 (12)同源器官例如:馬的前肢和人的手;同功器官例如*編蚓的驚手和蝶蛾類的滋。

(12)樹皮刀包括表皮,皮、維管束鞘、韧皮部。

(14)在植物內的水份其上升之原理有三:(1)由於根部吸收大量水份,產生一種壓力,和您 根燮,(2)由於木質部的導管篇小管,故吸水後生毛細管引力上升,(3)由於想的蒸 騰作用而引起分于間之吸引力致水液上升。

(15)根之功能有:(1)吸收泥土中的水份和降於水中的無機鹽,且淇莖,(2)貯藏日

型成的食物,(3)缩殖後代,(4)爾特整棵植物。

(16)莖之功能相(1)運輸水液白根至薄,運程已製成的食物自寒至极,(2)固定植物身级

(3)陪败已製成的食物,(4)然殖後代。

C17)根之向性有,C1)向地性,(2)向水佛,(3)背光佳 (18)泰之向性有:(1)背地性,(2)向水性,(3)向觸性

C195 肌肉可以分鑑:(1)横放肌(2)清肌,(3)心臟肌

(20)排尿的主要器官有:(1);(2)稳尿管;(3)時跳3(4)尿選。

下次生物科會考預習試題

生物試卷(二)

第三部(在武題綱上作答:

分雙單子葉堂的比及註明下面煦單子葉帮的模式府衝:#

TRIE

形成屑

#****

街皮

术

#

墅

(2)下面是雙子于雷型的新的精造墨t

(甲)攜出衝中所增

各部名稱。

Ca

(Z) EAMES?

(FOSME

各部名稱:

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