Modul Hikmah 5

8/8/2019 Modul Hikmah 5

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SCIENCE SPM

MODULE 5

PAPER 1

1 Where can nuclear fusion occur naturally?A StarsB MoonC EarthD Planets

2 The process of radioactive decay involvesA heat productionB atoms breaking up into small piecesC a stable atom becoming an unstable atomD an unstable atom becoming a more stable atom

3 The radioisotope cobalt-60 is used in industry and medicine. Cobalt-60produces intensiveA heat radiationB beta radiationC alpha radiationD gamma radiation

4 Which shows the arrangement of radioactive radiation, from the lowestpenetrating power to the highest penetrating power?A Alpha, beta, gammaB Beta, gamma, alphaC Gamma, beta, alphaD Alpha, gamma, beta

5 Which are some characteristics of alpha radiation compared to otherradioactive radiations?A It is neutral and has the lowest penetrating power.B It is neutral and has the highest penetrating power.C It is positively charged and has the lowest penetrating power.D It is negatively charged and has the highest penetrating power.

6 Which of the following is true about radioisotope iodine-131 that is used

in medicine? Radioisotope iodine-131 is used toA cure diabetic diseaseB locate tumours in the brainC destroy tumour cells in the brainD estimate the volume of blood in the body


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7 Carbon dating is used to measure the age of archaeological findings.The radioisotope that is used isA cobalt-60B carbon-12C carbon-14D strontium-90

8

The figure above shows a diagram of a nuclear power station. Which ofthe following is correct?

Structure M Structure N Structure S

A Turbine Condenser Generator

B Turbine Generator Condenser

C Condenser Turbine Generator

D Generator Condenser Turbine

9 Exposure to very high doses of radioactive radiation will lead toA immediate deathB mutation

C cancerD infertility

10 Which of the following apparatus can be used to detect radioactiveradiation?

A AmmeterB VoltmeterC Ohm meterD Geiger-Muller counter

M

N

S


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PAPER 2SECTION A + B

Q 1. The diagram below shows the deflection of the radiations when passed through anelectric field. Radioactive substance placed in container P emits radioactive radiationX, Y and Z.

(a) Name radioactive radiation X, Y and Z.

(i) X:

(ii) Y:

(iii) Z:

[3 marks]

(b) (i) What will happen to radiation Y?

[1 mark]

(ii) Give one reason for your answer in (b)(i).

[1 mark]

(c) Radiation X is deflected more than radiation Z. Why?

[1 mark]

(d) Radioactive substance is kept inside container P.

(i) What is substance is used to made container P?

[1 mark]

(ii) Explain your answer in (d)(i).

[1 mark]


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Q 2. The diagram below shows the decay of a nucleus.

(a) The above process shows the decay of the radioactive atom. Why?

[1 mark]

(b) List three types of radioactive radiations that are emitted during the process ofradioactive decay.

1.

2.

3.

[1 mark]

(c) Which radiation will be deflected, if the above radioactive are radiated through anelectric field?

[1 mark]

(d) Which radiation can go through it, if the above radioactive radiations are blockedby a sheet if aluminium?

[1 mark]

(e) Name two characteristics of atom X and Y compared to the original radioactiveatom.

1.

2.

[1 mark]


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Q 3. The diagram below shows the use of radioactive substance to check the thickness ofaluminium produced in an aluminium factory.

(a) What radioactive radiation is emitted by the radioactive substance?

[1 mark]

(b) If the reading of the counter is within the range of 500 to 600, the thickness ofthe aluminium will be accepted. State the inference can you make if the readingof the counter

(i) is less than 500?

[1 mark]

(ii) is more than 600?

[1 mark]

(c) The radioactive substance stored in a lead container. Give one reason.

[1 mark]

(d) (i) The worker handling the radioactive substance is required to wear badge X forsafety precaution. What is X?

[1 mark]

(ii) How do identify whether that a worker been exposed to radioactive radiation?

[1 mark]


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PAPER 2SECTION C

1. (a) Explain one advantage and one disadvantage of using nuclear energy(b) Explain how radioisotopes can be used in a field of

(i) industry(ii) medicine and(iii) Archeology


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MODULE 5 - ANSWERS

PAPER 1

1. A 2. D 3. D 4. A 5. C 6. B 7. C 8. B 9. A 10. D

PAPER 2SECTION A + B

Q 1.a)(i) X-Beta particle

(ii) Y-Gamma radiation(iii) Z-Alpha particle

b)(i) Radiation Y is not depleted.(ii) It is neutral.

c) X is lighther than Z.d)(i) Lead

(ii) Radioactive radiation cannot penetrate the lead container.Q 2.a) Radioactive atoms contain unstable nuclei.b) Alpha radiation, beta radiation and gamma radiation.c) Alpha and beta radiations will be deflected.d) Gamma radiatione) Smaller and more stableQ 3.a) Beta

b)(i) The aluminium is thicker than the acceptable thickness.(ii) The aluminium is thinner than the acceptable thickness.

c) To prevent radioactive radiation from being radiated in all directions.d(i) A dosimeter(ii) The photographic film on the dosimeter turns black.

PAPER 2SECTION C

(a) Advantage- the production of nuclear energy does not produce pollutants (

monoxide, sulphur dioxide, carbon dioxide) compared to theburning of fossil fuel.

Disadvantage

-the radioactive waste can lead to environmental pollution if they arenotproperly disposed


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(b) Uses of radioisotopes in :(i) Industry

- detect leakages of gas pipes- control the thickness of paper, plastic or metal sheet

(ii) Medicine-

kill cancerous cells in treatment of cancer (radiotheraphy) by thegamma rays from cobalt-60- to sterilise hospital equipment (gamma rays)

(iii) Archeology- to estimate the age of ancient artifacts by carbon dating method

(Carbon- 14)

Modul Hikmah 5

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