EST PAPER 16355/1SEPT 20101 hour and 15 minutes

SEKOLAH MENENGAH KEBANGSAAN USJ 13

PEPERIKSAAN PERCUBAAN SPM

TINGKATAN 5

ENGLISH FOR SCIENCE AND TECHNOLOGY

PAPER 1

One hour and fifteen minutes_____________________________________________________________________

Arahan

1. Kertas soalan ini mengandungi dua (2) bahagian (Seksyen A dan B).2. Jawab semua soalan.

Instructions

1. This question paper consists of two (2) sections: Section A and B.2. Answer all questions.

Kertas soalan ini mengandungi 4 halaman bercetak.

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Bahagian Markah penuh Markah diperolehi

A Soalan 1 10

Soalan 2 10

B 30

Jumlah 50

Section A[20 marks]

You are advised to spend 30 minutes on this section.

Part 1Read the following text.

The use of wind turbine generators to produce electricity in the world is increasing. This is because wind energy is ample, free and completely renewable. It is also pollution-free as it does not produce greenhouse gases, toxic or radioactive waste. Moreover, technology is simple and robust. Wind turbines operate on a very simple principle. The energy in the wind turns two or three propeller-like blades around a rotor. The rotor is connected to a main shaft, which spins a generator to produce electricity. Today, wind energy is produced in wind farms where dozens of wind turbines are scattered over a large area to produce electricity. There are certain problems faced in producing wind energy on a large scale. Firstly, the strength of the wind is not constant. It varies from zero to storm force. This means the wind turbines do not produce the same amount of electricity all the time. There will be times when no electricity is produced. So, there is a need to have some form of storage. Secondly, good wind sites are mostly found in the rural areas and not in the cities where electricity is most needed. Thirdly, the initial cost of setting up wind farms is high in comparison with other alternative power plants, despite cheap generation cost in the long run

Based on the information from the text, complete the graphic organizer below.

Wind Energy

Advantages How it is generated Problems faced

1. ___________________

___________________

6. __________________________

__________________________

__________________________

8. ___________________________

___________________________

___________________________

2. ___________________

___________________

7. __________________________

__________________________

__________________________

9. ___________________________

___________________________

___________________________

3. ___________________

___________________

10. __________________________

___________________________

___________________________

4. ___________________

___________________

5. ___________________

___________________(10 marks)

Part 2Read the following text.

Viruses and bacteria can cause many well-known diseases. While both are microscopic, viruses are so tiny that they can be seen with an electron microscope. The structure of a virus is extremely simple. Each virus is made up of two elementary components: a strand of genetic material, either DNA or RNA, and a protein coat called a capsid that surrounds the DNA or RNA and serves to protect it and aid in its transmission between host cells. The capsid can be formed in three general shapes: helical, icosahedral and complex. A virus needs to take over a host cell to metabolize, grow and reproduce. After locating and attaching itself to a suitable host cell, it releases its genetic

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material into the cell, shuts down normal cell processes and uses the cell’s energy and materials to make numerous copies of the original virus. The host cell then raptures, releasing the virus to infect neighbouring cells. Bacteria are very different from viruses. Bacteria are much larger in size and more complex than a virus. Most bacteria have an outer, rigid cell wall which provides shape and support. Inside the cell is the cytoplasm containing ribosomes and genetic material. Some bacteria have flagella that they use for movement. Bacteria can occur in three basic shapes: Coccus (spheres), Bacillus (rods) and Spirillum (spirals). Bacteria undergo a type of asexual reproduction known as binary fission. They divide in two, and each new bacterium is a clone of the original.

Based on the information given in the text above, complete the table below.

MICROORGANISMS

VIRUSES BACTERIA

Structure 1. _______________________________

_______________________________

6. ____________________________

____________________________

Shape 2. _______________________________

3. _______________________________

4. _______________________________

7. ____________________________

8. ____________________________

9. ____________________________

Reproduction Method

5. _______________________________

_______________________________

10. ___________________________

___________________________

(10 marks)Section B

[30 marks]

You are advised to spend 45 minutes on this section.

Your science team has been selected to prepare a science presentation for the upcoming Science Fair in your school. Your group has decided to write an informative report on the formation of rainbow. Based on the notes given, write out the report.

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What is a rainbow?

an arched light - parallel color stripes - appears when sun’s rays are bent - reflected by drops of mist or rain

What causes a rainbow to form?

thousands of water droplets - sunlight passes - light is reflected and dispersed - light reflected off the back of the drop - refracted again when leaving the drop

How does a rainbow get its colors?

the principle called dispersion – white light passes prism – scattered colours according to wavelength - sunlight - composed of light wavelengths - short wavelength light - blue, violet and indigo - long wavelength light - red, orange and yellow

Why is a rainbow shaped like an arc?

actually formed a circle - light from sun refracted by droplets at approximately 42 ⁰ - part of the circle of light cut off by the horizon - larger portion of rainbow can be seen when sun is low in sky - full circle can be seen at high altitudes

Your report must include the following: a title all the information given any other relevant information

Your report should be about 200 words in length.

__________________________________________________________________________________Prepared by, Checked by, Approved by,

………………..…….. ……………………… ……………………………..PN ZUANA HANOM PN NATLIE AUSTIN PN NURHAYATI AHMAD

zhmn/smkusj13/estP1-trial10

SEKOLAH MENENGAH KEBANGSAAN USJ 13PEPERIKSAAN PERCUBAAN SPM 2010

ENGLISH FOR SCIENCE AND TECHNOLOGY6355/2

ANSWER SCHEMESection A

Part 1 Part 2

1. Ample 1. Extremely simple; made up of

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2. Free3. Completely renewable4. Pollution-free5. Technology is simple and robust6. Wind energy turns blade around motor7. Rotor connected to main shaft spins

generator to produce electricity8. Strength of wind not constant to

produce electricity so need some form of storage

9. Good wind sites are mainly found in the rural areas where the demand for electricity is low

10. Initial cost of setting up wind farm is very high

either DNA or RNA; a capsid that surrounds the DNA or RNA

2. Helical3. Icosahedral4. Complex5. Releases genetic material into a

host cell and make copies of itself

6. Have an outer, rigid cell wall and cytoplasm containing ribosomes and genetic material

7. Coccus (spheres)8. Bacillus (rods)9. Spirillum (spirals)10. Binary fission

Section B

Refer to marking band

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