第二第張五第,旦八廿月四年亥辛麻夏
WAH KIU YAT PO
英中會考試題預習專欄 物理科 (CHE)
PHYSICS
LESSON THIRTY
FINAL REVISION NOTES
SOUND
(a) Longitudinal Waves are waves, an which the direction
the particles are along the pro pagation of the wave.
(b) Transverse Haves are waves in which the direction of vibratior
virbrations of the particles are per-" pendicular to the propagation of waves,
(c) Exequency (f) is the number of vibrations per unit time
and expressed in c.p.si (cycle per sec.) or- bertz..
(d) Wavelength () is the distance between two successive
similar points: in a wave. The relation of
and is velocity of sound N
(a) Amplitude is the maximum displacement in a vibra
郭日橋華
六期星日二廿月五年一七九一零公年十六國民華中育儒罋
1971 英文中學會考試題預習專欄
W±Ð SUNLIGHT PRESS
生物科
BIOLOGY
SON THIRTY
Key to Lesson 28 Txercise. 27
N
13.
Exercise 23
D
Tách question below consists of 2 statements linked by the word URCAUSE. Decide whether each of the two statements is THUI or FALSI; if both are true, then decide whether or not the second statement is the correct explanation of the first. statement. Then select one option from A to B ur from 1 to T according to the following.
statement 2nd statement
Optic
Nor
true
B or 0.
true:
Dor
frue fals
1 or T
falsc
true:
true
false
"true"
false
Explanation
correct
incorrect
incorrect
incorrect
incorrect
Plants die young, in the absence of salcium because ent is important in building up the cell wall:
Fating marine, fishes can prevent simple goitre because they supply large amounts of jodine.
8. Male birds usually are prettier than female ones because
they use their plumage to catch pr
Q.
R
Roughage should be included in our diet because blood should remain constant in composition.
10. Thyrotoxicosis is associated with indigestion because
the nitrogenous waste materials so accumulated produco * harmful eff
11 Chlorosis is caused by
phosphorus
C. copper
nitrogen
absence of
calcium boron
12. Formation of chlorophyll, in addition to other elements.
alen necessitate: the
molybdenum
potassium venadion
1. zind
manganese
(f) Characteristics of sound
(1) pitch (depends on frequency)
(11) Loudness (depends on amplitude) (i) quality (depends on overtones)
(8) Resonance occurs when a body is set into vibration by
application of small, impulses having the same frequency as the natural frequency of the body Itself,
(k) dance tubes
Closed tube.
Open tubes
In performing an experiment to find out the rate of respiration in green plants the bell far is blackened because light can bring aboutątropic response.
D.
Flattened plant parts usually do not show tropic respon
ause they possess a lower level of growth substand
T.
Dirds excrete solid waste
ing water:
use it is a method of
In 18
IN
Absorption processes can take bit because villi are found
plutlets cannot be produced.
B
Haemophilia is a heritable
rectum of rab-
becaus
the blood-
13. The cerebral cortex of the brain is composed
Ixons only.
amons and cytons
E. none of the above-
cytons only
anons and dendrite
14. Production of chlorophy11/chloroplast in flowering
B
in extremely strong sun light
in red light only
C. in blue light only
D. in dark
f. in ordinary sunlight
15. Vision is controlled by members
the cranial nerves
B the spinal nerves
the sympathetic nerves,
the parasympathetic none of the abové
Vibration of a strang
Nodes are positions along a vibrating string. having no
displacement Antinodes are positions along a vibrating
string having maximum displace
frequency (fundamental
length of the string
tension of string
• mass of the string per unit: leng
AGNETISM
(*) Law of Attraction and Repulsion of Magnetisa
Like poles repel and unlike poles attract.
(b) Molecular Theory OF Magnetiams
Magnetic substances consist of molecules each of which is a pakll permanent magnet. When it is unmagnetised, the arrangement of molecular magnets are, in random. When it a magnetised, they are arranged in regular lines,
(c) Magnetic lines of force are lines in a magnetic field along
which magnetic polea tend to be
(d) Neutral point
is a point in a magnetic field at which no magnetic force san be detected.
(e) Hagnetic Meridian is the vertical plane containing the
magnetic axis of a freely suspended magnet under the action of earth's field..
(1) Angle of dip is the angle between the total earth'a
field with the horizonta).
(g) Angle of declination is the angle betxeen the magnetic and
geographic meridians,
(b) Methods of magnetisation
Single stroke
(11) Double stroke
(4)
(10)
Electrical method: By placing the magnet: to be sagnetised inside a solenoid with current flowing).
(1) Method of demagnetisation
(i)
Heating that
(11) Hammering (in an east-west direction):
111) By placing the magnet inside a solenoid and alternating current is allowed to fļau
CURRENT ELECTRICITY
Current is defined as the number of coulomb (quantity of electricity) per unit time, The unit is in alper lapere coulomb
second
Unit quantity of electricity 19 the quantity which will deposit 0,001118 gm of silver from silver nitrate solution during electrolysis..
(b) Potential differncce between 2 points is the amount of
work done in bring 1 couldub of electricity from one point to the other. Its unit is in volts,
volt
joule coulomb
(c) Ohm's Lav
The current passing through a conductor at const. temp is proportional to the potential difference applied to its ends. vI and -R (resistance),
volt
ohm.
An ohm is the resistance of a conductor, when volt is applied to it, the current flowing is 1 amp Resistivity is defined as the resistance of 1 cm, conductor of 1 sq. cm cross-sectional area. (a)
resistivity
Resistance in (a) Series;
(b) parallel
where Requivalent resistance;
are the individual resistanc
was because traffic ano
Former would circulate it thi
中文中學會考試題預習專欄
would be free to "go
INAL REVISION NOTES
英文科
(HL)
王鹤一
ENGLISH LANGUAGE
LESSON TWENTY-NINE
Answers to previous exercises
(1) (a) formerly
(b) widespread
(c) BELT
(d) fatal
(e) adults
"EXERCISE A
interrupted
terrified
(2) The two natural disasters wer
eruption of the volcano,
ake and the violent
(3) In the main town of the island, the earthquake caused the
greatest damage,
(4) The number of casualties was small and there were only four 4 casualties,
(5) Wooden buildings suffered most.
(6) The nearby villages camped out in the surrounding country-
side,
(7) The townspeople were searching for their possessions in
the ruins when the volcano erupted.
(8) As a result of the two natural disasters, all the islander,
had to leave and were resettled on another island.
(a) put up
(b) dainty
(c) roamed
(d) veritable
(e) smothered
EXERCISE B
ale
(e) opportunity (h) gossip
nook
(2) Sonning is situated on a river.
(3)1116 because of its natural beauty and every house L.
smothered in roses which were bursting forth in clouds of dainty splendour.
(4) The author and his companions visit Sonning in early June, (5) 11 is bucause of its beautiful scenery. It is an old countr
ann, with green square courtyard in front; with low, quain' rooms and latticed windows, and awkward stairs and windi passages,S
(6) They wandered abour the village on an hour or so. (7). They were going to put up for the night on one of the
Shiplake islands.
(* (8) George decided to make stew because he wanted to show
has companions what could be done up the river in the
ay of cookine..
concern
(b) enables
(c.) own
(d)rypės
EXERCISE C
sub-ways reclaimed circulate
(e) pedestrians
(2) The reason given for the crowding
uses and trans the tremendous growth of population in recent years. The rise in the standard of living which enables more and more people to dun cars shows that people are now better off.
16) In order to keep the roads safer, pedestrians should be
more careful and they should not wander off the payement (5) The widening of roads and the straightening of dangerous
corners are the two ways in which present roads are being. improved..
(6) The construction of new carriage-ways and flyovers for cars and of sub-ways for pedestrians being done to up the flow of traffic..
The group of town planners, architects and engineers studied traffic problems averseas
18) There would be less danger for pedestrians the reclaimed Le the Central District verë muit wa anaona
tone, Heptaparryi
levo) while the
The Right Use of Tenset
Tense can be defined as that form of a Verb which shows the time and the state of an action or event.
There are twelve tenses. As an example, let
the tenses of the Verb "Sing".
Indefinite
PRESENT
L:sing
Perfect Continuous.
Continuous
Perfect
I am sing
I have
ing.
wȧs
ung
had
I have beer
singing.
sung.
shall be
shall
have
sun
PAST
FUTURE
PRESENT INDEFINITE TENSE is used.
to express
customary action:
singing.
"I had been
singing.
shall
have been
singing.
6) I wake up at seven o'clock everyday. (ii) She eats her breakfast every morning.
to express universal truths:
(i) The sun sets in the west,
(ii) The earth is round
for generalizations,
(1) Mr. Chan is a good teacher.
(ii) Familiarity breeds contempt.
to express what is actually taking place present moment.
(1) Look! How beautiful the scenery is (ii) Sec, how he runs!
As the so-called. Historical Present, in a narrative
as a substitute for the Past Tense, konta
He cudgels his brains, fills reams of paper with strange marks and proves the Binomial Theorem, Instead of the Future Tense when futurity, is indicated by the context.
(1) The ship sails for Japan to-morrow. (ii) The aeroplane arrives; next Monday,
THE PRESENT CONTINUOUS TENSE (or THE PRESENT
PROGRESSIVE, TUNS!) is used to represent an action which
going on at the time of speaking.
(1). I am eating an apple now.
(11) The boys are playing football and the girls
singing. D
THE PRESENT PERFECT TENSE is used:
Tal to denote an action that has just been completed.
(1) · We have finished our work.
(ii) She has sung a song, just then.
to. represent a past action as continuing to the present
I have lived in Hong Kong since 1950.
THE PAST TENSE is used.
(a) to refer to an action completed in the
(1)
He won the maten yesterday.
(11) He returned home last month."
to indicate continuous action completed. In the past, While they played (= were playing) we studied
were studying).
to denote a customary action in the past. He played (used to play) tennis three hours everyday,
(5) THE PAST CONTINUOUS TENSE is used for actions cont
at specified times in the past,
'{1} _A€ 81x o'clock "the sun was shining-
(ii) I was singing whèn ne caine, în..
16) THE PAST PERFICT TINSI, for THE PLUPERFECT) indicates an action completed at some point in past time "before another action was begun,
(1) He had learned french before he went to France (11) Before the guests" came she had prepared lunch
No comments yet.
Private notes are available after approval.