SEKOLAH MENENGAH KEBANGSAAN ST MICHAELMOVEMENT CONTROL ORDER (MCO)

SCIENCE FORM TWO28 APRIL 2020

CHAPTER 11- STARS AND GALAXIES IN THE UNIVERSE

1 (a) Match the following galaxies with their correct namePadankan galaksi berikut dengan nama yang betul.

GalaxyGalaksi

Name of galaxyNama galaksi

Irregular galaxyGalaksi tidak seragam

Spiral galaxyGalaksi berpilin

Elliptical galaxyGalaksi elips

(b) Underline the correct answer for the following statements.

Griskan jawapan yang betul bagi pernyataan berikut.

(i) The milky way is a medium large (elliptical, spiral) galaxyBima sakti adalah suatu galaksi (elips, berpilin) yang sederhana besar.

(ii) (Large Magellanis Cloud, Ursa Mayor) is on of the example of irregular galaxy.(Magellan besar, Ursa Mayor) merupakan salah satu contoh galaksi tidak seragam.

(2 marks)

2. The death of star occur when hydrogen in its core has been used.Kematian bintang berlaku apabila semua hydrogen di dalam terasnya telah habis digunakan.

(a) Mark (/) two final stages of the death of starTandakan (/) dua peringkat akir bagi kematian bintang

(i) Supernova / Supenova(ii) Neutron Star / Bintang neutron(iii) Supergiant star / Bintang super raksasa(iv) Black hole / Lohong hitam

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(b) Stars can be classified based on their size. Diagram below shows three sizes of stars.Bintang boleh diklasifikasikan mengikut saiznya. Rajah di bawah menunjukkan tiga saiz bintang.

Match the following stars with their correct namesPadankan bintang berikut dengan Namanya yang betul.

Star / Bintang Name /Nama

R

NebulaNebula

White dwarf starBintang kerdil putih

S

Red giant starBintang raksasa merah

Black holeLohong hitam

(2 marks)

Section CBahagian C

3 (a) Table below shows the temperature on the surface of the starsJadual di bawah menunjukkan suhu di permukaan bintang

Surface temperature (K)Suhu permukaan (K)

30 000 10 000 5 500 3 000

Colour of starsWarna bintang

WhitePutih

YellowKuning

(i) Complete the table above.Lengkapkan jadual di atas. (2 marks)

(ii) What is the relationship between the colour of star and its surface temperature?Apakah hubungan antara warna bintang dengan suhu permukaannya?

_________________________________________________________________________(1 mark)

(c) The sun is a medium-sized starMatahari merupakan bintang bersaiz sederhana

(i) Why is the sun considered as a star not a planet?Mengapakah Matahari dianggap sebagai bintang dan bukannya planet?

___________________________________________________________________________

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(2 marks)

(ii) Why does the Sun look bigger and brighter than other stars?Mengapakah Matahari kelihatan lebih besar dan cerah berbanding bintang lain?

___________________________________________________________________________(1 mark)

4 (a) Diagram below shows a starRajah di bawah menunjukkan sejenis bintang

(i) What is the definition of star?Apakah definisi bintang?

_________________________________________________________________________(1 mark)

(ii) explain briefly the process of star birth?Terangkan secara ringkas proses kelahiran bintang?

_________________________________________________________________________

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_________________________________________________________________________( 4 marks)

(b) Diagram below shows the stages of the death of star which is bigger than the Sun Rajah di bawah menunjukkan peringkat kematian bintang yang bersaiz lebih besar daripada matahari

Name stages L, M and NNamakan peringkat L, M dan N

L: ___________________________________________________________________________

M:____________________________________________________________________________

N: ____________________________________________________________________________

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(3 marks)

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