Universe and Space Science

Samacheer Book Back Questions And Answers For Science Standard 8 “Universe and Space Science“

I. Choose the best answer:
1. Which of the following is a celestial body?
a) Sun
b) Moon
c) Stars
d) All the above

2. Mangalyaan was sent to _____.
a) Moon
b) Mars
c) Venus
d) Mercury

3. Chandrayaan – 1 was launched on _____.
a) 22nd October 2008
b) 8th November 2008
c) 22nd July 2019
d) 22nd October 2019

4. ________ is called as Red planet.
a) Mercury
b) Venus
c) Earth
d) Mars

5. Which of the following is the working principle of Rockets?
a) Newton’s first law
b) Newton’s second law
c) Newton’s third law
d) All the above

6. Cryogenic fuels are stored at _____.
a) room temperature
b) low temperature
c) very low temperature
d) very high temperature

7. ________ was the first manned mission of NASA to go to the moon.
a) Apollo-5
b) Apollo-8
c) Apollo-10
d) Apollo-11

II. Fill in the blanks:
1. The study about stars and planets are known as _____.
2. Our sun belongs to _____ Galaxy.
3. Mars revolves around the Sun once in _____ days.
4. _____ is India’s first interplanetary mission.
5. _____ was the first man to walk on the surface of the Moon.

Answers:
1. Astronomy
2. Milky way
3. 687
4. Mars Orbiter Mission
5. Neil Armstrong

III. Say true or false. If false, correct the statement:
1. The Sun and the celestial bodies form Solar system.
2. Chandrayaan-1 was launched from Sriharikota.
3. Mars is the smallest planet in the Solar system.
4. PSLV and GSLV are India’s popular satellites.
5. The propellant of a rocket is only in the form of solids.

Answers:
1. True
2. True
3. False (Mercury is the smallest planet in the Solar system)
4. True
5. False (The propellant of a rocket is may be in the form of solids or liquids)

IV. Match the following:
1. Chandrayaan          A. Fuel
2. Mangalyaan            B. Moon
3. Cryogenic               C. First manned mission to the moon
4. Apollo 8                  D. First man landing mission to the moon
5. Apollo 11                E. Mars

Answers:
1. B
2. E
3. A
4. C
5. D

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