SMJK Confucian 24 July 2018 · Dengan menggunakan konsep-konsep Fizik yang sesuai, cadang dan terangkan bagaimana untuk membina satu pemanas rendam yang boleh mendidihkan kuantiti

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PHYSICS Workshop

2018

Speaker : Thong KS

Success is depend on your

mind and your will.

You are the one, who

decide it. PROVE IT!!

SMJK Confucian

24 July 2018


PHYSICS Workshop 2018

Tips for Paper 3 No 1 and No 2

1. Identity the variable from the text and diagram.

(a) Manipulated variable

(b) Responding variable

(c) Fixed variable (can be measured)

---NOT TYPE OF SUBSTANCE

(d) Observe the diagram measurement

(e) Identity the value in table

(f) Tabulate data with symbol and unit

(g) Plan your graph (unit and symbol)

(h) Determine the relationship from the graph

2. Read the question CAREFULLY

(a) Extrapolate the graph and write the value next to it

(b) Plot biggest triangle and get closest value with unit

(c) Substitute the value correctly with 2 decimal places

(d) Place precaution

Eye Observation perpendicular to the scale of (instrument) to prevent

parallax errors

Off the circuit when measurement is not taken to prevent heating of wires and

cause systematic errors

Repeat the experiment for 3 times and determine the average to prevent

systematic error

3. Tips Paper 3 no 3 and 4.

(a) Planning experiment is the BEST to do and EASY to score but it is also easy to differ

from the main point.

(b) Identify variables from the questions from the statement, CIRCLE UP the variables

involve and APPARATUS GIVEN in statement.

(c) Think what ???? experiment is using given apparatus as a HINTS. Plan and sketch the

diagram of experiment step up.

(d) Write inference, hypothesis and aim FOLLOW FORMAT given.

Underline the variables of MV and RV from the diagram. Use the variables to substitute the

format of Planning Experiment.

Procedure

1. State the initial measurement of MV.

2. State the ways of measurement of RV with apparatus and follow with formula (if necessary)

3. Repeat the experiment with 4 different MV values. a1,a2,a3 and a4.

Paper 2 Part B

1. Definition – don’t state the formula of the define word

- Write the definition in statement from the formula 2. Comparison questions – must use back the same diagram to compare in physics term

comparison. Quote back the Diagram number, and compare with statement according to the marks provision.


3. Explanation on aspects given. Must quote back the aspect given, don’t divert the statement by explaning other statement

of your ways.

Explain the characteristics of the statement given follow ( 1 marks) with explanation of the

benefit and advantages of the characteristics stated. (1 marks)

More explanation are better, usually TWO are more than enough.

Part C

1. Usually calculation, and definition.

Please state formula, working and final results with minimum 2 decimal places and correct

units.

2. Explanation of physics concepts, usually test your understanding of physics formula

relationships.

3. Study specification on the aspects given and evaluate the pictures given to extract the answer

from the information given. Quote the information of point of answer and elaborate the

statement of characterics with physics concept explanation.

4. Try to give TWO explanation of each characterics in a statement. (4 points with 4

explanation) – 8 marks

5. Final 2 marks is the explanation of the BEST suitability and CHOOSE the BEST of the 4 or 5

given examples.

6. This characteristics and explanation can states in a table form. (THE BEST EVER ESSAY

for 10 marks)

7. Choose the best essay than you can get the MOST marks.

8. Essay in Part B and Part C is usually ONE form 4 and ONE form 5. So DON’T SPOT

QUESTION. Study all the physics concept.

Hots Questions

Topic MV RV Hypothesis Set up Diagram

Heat mass temperature

Heat supply 1. C 2. P 3.V

temperature

Charles Law temperature Volume of gas

Electricity Length of wire Resistance

Electromagnetism Height of magnet drop

Current induces

thongks

Sticky Note

the higher the mass, the lower the temperature

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Sticky Note

the higher the c, the lower the temperature. the higher P or V, the higher the temperature

thongks

Sticky Note

the higher the T, the higher the V

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the higher the length, the higher the R

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the higher the height of magnet drop, the greater the induces current

thongks

Text Box

PNC


Essay

1. electromagnetism-

2. electricity

3. current

4. light –total internal reflection

5. interference and diverge

Paper 3 Planning experiment 1. Rajah 3.1 menunjukkan seorang pemuda duduk bersendirian di atas sebuah

bangku yang berada di atas tanah yang lembut, dia mendapati kaki bangku itu

tidak tenggelam ke dalam tanah.

Diagram 3.1 shows a teenager sat alone on top a benches on a soft soil, he noticed

the leg of the benches never sink into the soil.

Rajah 3.2 menunjukkan kaki bangku tenggelam ke dalam tanah apabila seorang

pemuda lain duduk di atas bangku itu bersamanya.

Diagram 3.2 shows the leg of the benches sank into the soil when another teenager

sat on the benches together.

Rajah 3.1 Rajah 3.2

Dengan menggunakan radas seperti pemberat , plastisin dan radas lain terangkan satu

eksperimen untuk menyiasat hipotesis yang dinyatakan di 3(b).

Using the apparatus as load, plasticine and other apparatus, explain an experiment to

investigate the hypothesis stated in 3 (b)

thongks

Sticky Note

the bigger the area, the lower the depth of sinking

thongks

Text Box

PNC


1. Rajah 4.1 menunjukkan pesongan ammeter adalah kecil apabila suis dihidupkan dan

reostat dilaraskan pada satu kedudukan. Bunyi loceng yang kedengaran adalah

perlahan.

Diagram 4.1 shows the small deflection of ammeter when switch is turn on and

rheostat set at one position. The bell ring slowly.

Rajah 4.2 menunjukkan pesongan jarum ammeter adalah lebih besar apabila suis

dihidupkan dan reostat dilaraskan pada kedudukan yang berbeza. Bunyi loceng yang

kedengaran adalah lebih kuat.

Diagram 4.2 shows the bigger deflection of ammeter when switch is turn on and

rheostat set at another position. The bell ring louder.

Rajah 4.1 Rajah 4.2

(a) Dengan menggunakan radas seperti bateri, teras besi lembut,dawai kuprum bertebat, dawai penyambung dan radas lain, terangkan satu eksperimen

untuk menyiasat hipotesis yang dinyatakan di 4(b).

Using the apparatus such as battery, soft iron core, insulated copper wire,

connecting wire and other apparatus, explain an experiment to investigate the hypothesis

stated in 4 (b)

2.

Diagram 3 shows two similar coffee maker A and B, containing different amount of

coffee on similar hot plates stove. The coffee in both coffee makers are heated by

turning on the power supply of the hot plate. After few minutes, it was observed that

the coffee in coffee maker B is hotter than the coffee in coffee maker A.

Rajah 3 menunjukkan dua pembancuh kopi serupa A dan B, mengandungi jumlah

kopi yang berbeza di atas dapur plat panas yang serupa. Kopi di dalam kedua-

dua pembancuh kopi dipanaskan dengan menghidupkan bekalan kuasa plat panas.

Selepas beberapa minit, didapati kopi dalam pembancuh kopi B adalah lebih panas

daripada kopi dalam pembancuh kopi A.

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Sticky Note

the greater the current, the greater the distance displace


(c) With the use of apparatus such as beaker, thermometer and other apparatus,

describe one experiment to investigate the hypothesis stated in 3(b).

Dengan menggunakan radas seperti bikar, termometer dan lain-lain radas, terangkan

satu eksperimen untuk menyiasat hipotesis yang dinyatakan di 3(b).

3.

4.

With the use of apparatus such as an ammeter, constantan wire and other apparatus, describe one

experiment to investigate the hypothesis stated in 4 (b).

thongks

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the greater the mass of liquid, the lower the temperature

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the greater the current/ energy, the higher the temperature

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the longer the length, the higher the R


6. Diagram 3 shows a dented ping pong ball then put in a basin that consist cold water

(Diagram 3 (a)), warm water (Diagram 3 (b)), and hot water (Diagram 3 (c)). Observe the

shape of ping pong ball and their surroundings.

(c) . With the use of apparatus such as a thermometer, capillary tube, bunsen

burner and other apparatus, describe an experiment framework to investigate the hypothesis stated in 3 (b).

Diagram 3 (a)

Diagram 3 (b)

Diagram 3 (c)

7.

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the higher the temperature, the higher the volume of gas


With the use of apparatus such as thermometer, ammeter, resistor wire and other apparatus,

describe one experiment to investigate the hypothesis stated in 4 (b).

8. Diagram 4.1 and Diagram 4.2 shows an electric motor used to rotate a portable electric fan. It is

found that fan blade in Diagram 4.1 rotate faster.

Rajah 4.1 dan Rajah 4.2 menunjukkan sebuah motor elektrik yang digunakan untuk

memutarkan sebuah kipas elektrik mudah alih. Di dapati bahawa bilah kipas dalam Rajah 4.1

berputar dengan lebih laju.

Diagram 4.1/ Rajah 4.1

Fan blade

Bilah kipas

Number of turns of coils = 100

Bilangan lilitan gegelung = 100

Battery

Bateri

Permanent magnet

Magnet kekal

thongks

Sticky Note

the higher the T, the higher the R


Diagram 4.2/ Rajah 4.2

With the use of apparatus as batteries, ammeter, permanent magnet, connecting wires and

other apparatus, describe an experiment framework to investigate the hypothesis stated in

4(b)

Dengan menggunakan radas seperti sel kering, ammeter, magnet kekal, dawai

penyambung dan lain-lain radas, terangkan satu rangka kerja eksperimen untuk

menyiasat hipotesis yang anda nyatakan dalam 4(b)

Essay

1.

Battery

Bateri

Number of turns of coils = 100

Bilangan lilitan gegelung = 100

Permanent magnet

Magnet kekal

Fan blade

Bilah kipas

thongks

Sticky Note

the higher the current, the higher the number of pins attracts

thongks

Sticky Note

1. Use refractive index of outer ===layer is less than the refractive index of outer layer So that total internal reflection can happen in the fiber optic. (to increase the distance of coverage, use bigger total internal reflection angle) 2. Use high flexibility material ==so that it can be bend, fibre glass, not corrode and easily break off 3. Use strong material ===do not break easily and withstand high temperature and pressure under ground 4. Use thin material ==== Lighter // can be use in small area , easily bend, can be compounded, can transmit info in faster way 5. Low density material =low density, less transportation cost, easy installation


2. Diagram 10.6 shows a water heater used to boil water.

Rajah 10.6 menunjukkan satu pemanas rendam digunakan untuk mendidihkan

air.

Using appropriate physics concepts, suggest and explain how to build a water heater which can boil a

larger quantity of water faster , more efficient, and more safety based on the following aspects;

Dengan menggunakan konsep-konsep Fizik yang sesuai, cadang dan terangkan bagaimana untuk

membina satu pemanas rendam yang boleh mendidihkan kuantiti air yang lebih besar dengan lebih

cepat, lebih cekap dan lebih selamat , berdasarkan aspek-aspek berikut ;

(i) type of material used for the heating element of the water heater

Jenis bahan yang digunakan untuk elemen pemanas bagi pemanas rendam

(ii) shape of the heating element of the water heater

bentuk elemen pemanas bagi pemanas rendam

(iii) melting point of the heating element of the water heater

takat lebur elemen pemanas bagi pemanas rendam

(iv) rate of rusting of the heating element of the water heater

kadar pengaratan elemen pemanas bagi pemanas rendam

(v) additional component used for safety when the water boil

Komponen tambahan yang digunakan untuk keselamatan bila air mendidih [10 marks]

3. Table 11.2 shows design of four pressure cookers and their characteristics.

Jadual 11.2 menunjukkan rekabentuk bagi empat periuk tekanan dan cirri-cirinya.

You are required to determine the most suitable specifications for a design of a pressure cooker. Explain the

suitability of each specification. Choose the most suitable pressure cooker and give reasons for your choice.

Anda dikehendaki menentukan spesifikasi yang paling sesuai untuk merekabentuk sebuah periuk tekanan.

Terangkan kesesuaian setiap spesifikasi. Pilih periuk tekanan yang paling sesuai dan beri sebab untuk pilihan

anda. [10 marks]

thongks

Sticky Note

Aspect Explanation Use (tungsten) High melting point, it never corrode, heat up in shorter time, more efficient Nichrome , power inversely proportional to time Coiled longer wire, increase the resistance, more heat produce and boil larger quantity, high melting point not easy to melt under high temperature, boil water faster and less heat disspated Low rate of rusting Does not get rust easily, it wont poison the drinking water use termostat When temperature reach 100oC, the water heater will thermistor automatically turned off, prevent lost of water through evaporation with added safety features

thongks

Sticky Note

1. nicrom- high melting point , prevent it from melting at high temperature and never corrode with water 2. coil and long- more resistance, more heat release to boil large quantity of water in short time 3. high melting point more than 100 C- to prevent water boiling at 100 C and melt the element and achieve the boiling of water 4. low rate of rusting of heating element- element wont rust easy or fast when expose to water and never contaminant the water and turn to poison 5. circuit breaker and lighting protector- at high voltage cut off the supply and prevent electricuted

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Sticky Note

1.with release valve- release extra pressure to prevent injuries when imbalance pressure release 2. multi layer- withstand high pressure, prevent explosion at high pressure 3. sealing ring- prevent leak of liquid at high boiling point and leak of odour 4.steel pot- prevent rusting and withstand high temperature Q , steelpot, sealing ring, multi layer, release valve


4.


4marks Essay

1.

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Semasa hari panas, dinding rumah menjadi panas - Udara di dalam rumah menjadi panas / Suhu udara di dalam rumah meningkat - Udara panas bergerak ke atas dan menolak kipas / Ketumpatan udara panas adalah rendah / Perolakan berlaku - Apabila kipas berpusing, udara yang panas ditolak keluar ke persekitaran - Udara yang sejuk lebih memasuki ruang, rumah menjadi sejuk

thongks

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graphite- control nuclear fission boron - control the neutron bombardment water- high specific heat capacity, absorb heat , cool effectively. thick- prevent gama radiation and heat loss to surrouding (cadmium as moderator---reduce fission heavy water, river water higher specific heat capacity0 R - best reactor


2.

3.

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Semasa pemotong rumput ditolak: - Terdapat komponen daya ke bawah daripada daya tolak. Daya ke bawah = W + F y / Daya ke atas rumput adalah hasiltambah berat mesin dengan komponen menegak daya tolakan. / Daya berkesan ke bawah lebih besar. Semasa menarik pemotong rumput: Daya ke bawah = W - F y / Daya ke atas rumput adalah hasiltambah berat mesin dengan komponen menegak arah ke atas daya tarikan. Daya berkesan ke bawah lebih kecil

thongks

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Explain the process correctly 1. Temperature of coffee is higher than surrounding 2. Heat from coffee transfers to surrounding 3. Heat transfers until achieve thermal equilibrium 4. Rate of heat transfer is equal / Temperatures are equal / net rate of heat transfer is zero


4.

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Bulb B doesn’t light up because of short circuit The total resistance across PQ decrease, hence the current increase Brightness of Bulb A and B is the same Ammeter reading of X and Y is the same


(a) make one suitable inference .

The ___________________ is depend on the ____________________________

(b) state one appropriate hypothesis

The higher the _______________________, the _________ the ____________________

(i) aim of the experiment

to determine the relationship between _______________ and _______________

(ii) variables in the experiment

MV _________________________

RV __________________________

CV ___________________________

(iii) list of apparatus and materials

(From list given and use to measure RV and MV with controlling the motion)

_____________________________________________________

(iv) arrangement of the apparatus

(diagram with label)

(v) the procedures of the experiment

1. method of controlling the manipulated variable (initial data)

__________________________________________________

2. method of measuring the responding variable (use what and how to measure )

____________________________________________________

____________________________________________________

3. repeat with 4 difference value

______________________________________________________

(vi) the way of tabulate data

MV, symbol and unit RV, symbol and unit

(vii) the way you would analyse the data

(viii) analyse the data

(b) symbol and unit

Symbol and unit

Documents

SMJK Confucian 24 July 2018 · Dengan menggunakan konsep-konsep Fizik yang sesuai, cadang dan terangkan bagaimana untuk membina satu pemanas rendam yang boleh mendidihkan kuantiti