CBSE Class 8 Science Stars and the Solar System Assignment Set D

STARS AND THE SOLAR SYSTEMe

1.On full moon day:

(A) Moon lies in between the Earth and the Sun. (B) Earth lies in between the moon and the Sun.

(C) Sun lies in between the Earth and the moon. (D) None of them.

2.Which planet has 30 satellites:

(A) Saturn. (B) Pluto. (C) Uranus. (D) Jupiter.

3.Time taken by the Earth to go once around the Sun is:

(A) 365 days. (B) 365.45 days. (C) 365.75 days. (D) 365.25 days.

4.Halley's comet appears after every:

(A) 75 years. (B) 73 years. (C) 76 years. (D) 72 years.

5.Moon's surface is:

(A) Smooth. (B) Fertile. (C) Dusty and barren. (D) None.

6.Pole star changes its position in the sky because:

(A) It is an imagination. (B) It lies on the axis of rotation of earth.

(C) It lies on 30° to the axis of rotation of earth. (D) Moon kept it stationary in sky.

7.Write the name of first satellite of India.

8.What is a natural satellite?

9.Why do we classify the sun as a star?

10.Which comet appears after every 76 years?

11.Name any two artificial satellites of our country.

12.Name a star that always appear stationary from earth's surface?

13.What do you mean by the term phases of moon?

14.What are celestial bodies?

15.Why the village sky is so different from the night sky in big cities?

16.The star nearest to the Earth after the Sun is:

(A) Alpha Centuari. (B) Pole star. (C) Shooting star. (D) Moon.

17.Light year is equal to

(A) 9.46 x 1012 km. (B) 3,00,000 x 365 x 24 x 60 x 60 km.

(C) 9,460,000,000,000 km (D) All of them

18.Polaris' is the name given to a star situated in the north direction. The other name of the star is

(A) Great bear. (B) Orion. (C) Pole star. (D) Ursa minor.

19.Distance between the stars is measured in:

(A) Kilometers. (B) Meters. (C) Light years. (D) Chandra Shekhar Limit.

20.Which of the following planet is called morning star:

(A) Venus. (B) Mercury. (C) Pluto. (D) Neptune.

21.Venus is brightest planet because of:

(A) Ozone layer around it. (B) Cloudy atmosphere of nitrogen.

(C) Cloudy atmosphere of carbon dioxide. (D) Layer of jugnus around it.

22.Which of the following statements is false about Venus?

(A) Venus keeps its same face towards the sun.

(B) Its day side temperature is too high and night side temperature is too low.

(C) It has a thick atmosphere of carbon dioxide, which contributes to its excessive dayside temperature.

(D) It rotates from west to east about its axis.

23.Change of seasons on the earth takes place due to the reason that:

(A) The axis of rotation of the earth is tilted at an angle of ° with the vertical.

(B) The earth is not always at the same distance from the sun, on account of its slightly elliptical orbit around the sun.

(C) Both (a) and (b).

(D) None of these.

24.Match the following:

Column I                           Column II

I. Coldest planet                   A.Mars

II. Bluish planet                    B.Saturn

III. Plant with rings around    C. Uranus

IV. Red planet                       D. Pluto

(A) I-B, II-A, III-D, IV-C (B) I-C, II-B, III-A, IV-D

(C) I-D, II-C, III-B, IV-A (D) I-A, II-D, III-C, IV-B

25.Match the following:

Column I                         Column II

IDon't twinkle                     A.Meteors

II.Group of stars                 B.Planets

III.Burning pieces of rocks   C.Asteroids

IV.A belt of debris between   D.Constellation Mars and Jupiter

(A) I-B, II-D, III-A, IV-C (B) I-C, II-A, III-B, IV-D

(C) I-D, II-B, III-C, IV-A (D) I-A, II-C, III-D, IV-B

26.Which of the following can reach on the surface of earth:

(A) Meteors. (B) Meteorite. (C) Comets. (D) Asteroids.

27.What reason you assign for the formation of day and night on the earth?

(A) Revolution of sun around the earth (B) Revolution of earth around the sun

(C) Revolution of earth on its own axis (D) Revolution of moon around earth

28.On new moon day

(A) The moon is between the sun and earth. (B) The sun is between the moon and earth.

(C) The earth is between the sun and moon. (D) None of these.

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