MCQ on Solar System Set 6

MCQ on Solar System
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Question 1. Galileo made many astronomical discoveries. Which of the following was NOT one of his discoveries?

(A) Sunspots

(B) Moons of Jupiter

(C) Mountains on Venus

(D) The phases of Venus

View Answer
(C) Mountains on Venus

Question 2. On the celestial sphere, the annual path of the Sun is called _____________.

(A) Solstice

(B) Diurnal

(C) Ecliptic

(D) The eclipse path

View Answer
(C) Ecliptic

Question 3. The first and largest asteroid discovered was _____________.

(A) Trojan

(B) Ceres

(C) Juno

(D) Pallas

View Answer
(B) Ceres

Question 4. Accretion is _____________.

(A) The disintegration of matter

(B) The process of matter accumulation due to centripetal force

(C) The process of moon formation for planets

(D) The gradual accumulation of matter in one location usually due to gravity

View Answer
(D) The gradual accumulation of matter in one location usually due to gravity

Question 5. Which of the following planets has the lowest density? 

(A) Mars

(B) Saturn

(C) Venus

(D) Mercury

View Answer
(B) Saturn

Question 6. What causes a planet to have a magnetic field? 

(A) Its rotation about its sun

(B) The Photoelectric effect

(C) The Doppler effec

(D) The dynamo effect

View Answer
(D) The dynamo effect

Question 7. A blue shift means a Doppler shift of light from a(an) _____________.

(A) Fixed star

(B) Approaching star

(C) Blue star

(D) Receding star

View Answer
(B) Approaching star

Question 8. The reason we call an astronomical body a black hole is that _____________.

(A) It is a dead planet

(B) It represents lack of matter in a portion of space

(C) Its gravity is so high that it absorbs its own photons

(D) It is a huge star which appears black at its center

View Answer
(C) Its gravity is so high that it absorbs its own photons

Question 9. Of the following, which is the only planet which CANNOT be seen with the unaided eye?

(A) Saturn

(B) Neptune

(C) Mars

(D) Jupiter

View Answer
(B) Neptune

Question 10. What does it mean when someone says that comets have eccentric orbits? Does it mean _____________.

(A) The sun is far from the foci of their orbits

(B) Their orbits are unpredictable

(C) They have nearly circular orbit

(D) They have open orbits

View Answer
(A) The sun is far from the foci of their orbits

Question 11. Mercury and Venus are said to be inferior planets because _____________.

(A) Their orbits are inside of the Earth’s orbit

(B) Their orbits are faster than the Earth’s orbit

(C) Their orbits are slower than the Earth’s orbit

(D) They are smaller than the other planets that circle the Sun

View Answer
(A) Their orbits are inside of the Earth’s orbit

Question 12. The atmosphere of Venus contains mostly _____________.

(A) Water

(B) Nitrogen

(C) Carbon dioxide

(D) Xxygen

View Answer
(C) Carbon dioxide

Question 13. The age of the Universe in billions of years is approximately _____________.

(A) 1000

(B) 18

(C) 3.5

(D) 500

View Answer
(B) 18

Question 14. What are Saturn’s rings composed of? 

(A) Highly reflective cosmic clouds

(B) Mixtures of gases

(C) Billions of tiny solid particles

(D) Completely connected solid masses

View Answer
(C) Billions of tiny solid particles

Question 15. What is the approximate age of our sun?

(A) 20 billion years

(B) 5 billion years

(C) 2 billion years

(D) 1 billion years

View Answer
(B) 5 billion years

Question 16. Which of the following has the greatest density? 

(A) Jupiter

(B) Mars

(C) Venus

(D) Sun

View Answer
(C) Venus

Question 17. The Crab Nebula consists of the remnants of a supernova which was observed by _____________.

(A) Several ancient civilizations in 236 B.C.

(B) The Chinese in 1054 A.D.

(C) Kepler and Galileo in 1604

(D) Brahe in 1572

View Answer
(B) The Chinese in 1054 A.D.

Question 18. Give me the name of the first artificial earth satellite and the year in which it was launched.

(A) SPUTNIK 1960

(B) SPUTNIK 1957

(C) SPUTNIK 1958

(D) SPUTNIK 1956

View Answer
(B) SPUTNIK 1957

Question 19. What causes the gas tail of a comet to always point away from the sun? 

(A) GFravity

(B) Centrifugal force

(C) Air pressure

(D) Solar wind

View Answer
(D) Solar wind

Question 20. The diameter of the disk of our galaxy, within a factor of two, is how many light years?

(A) 80,000 LIGHT-YEARS

(B) 70,000 LIGHT-YEARS

(C) 100,000 LIGHT-YEARS

(D) 90,000 LIGHT-YEARS

View Answer
(C) 100,000 LIGHT-YEARS

Question 21. The angular distance between a planet and the Sun, as viewed from the Earth, is called?

(A) Opposition

(B) Latitude

(C) Elongation

(D) Angle of inclination

View Answer
(C) Elongation

Question 22. Which of the following Saturnian satellites is known to possess an atmosphere?

(A) Mimas

(B) Dione

(C) Titan

(D) Tethys

View Answer
(C) Titan

Question 23. If we look at a galaxy that is moving AWAY from us, we find that the wavelengths of light coming from this galaxy are _____________.

(A) Unchanged

(B) Shortened

(C) Lengthened

(D) None of above

View Answer
(C) Lengthened 

Question 24. What planet comes closest to the Earth?

(A) Mercury

(B) Venus

(C) Saturn

(D) Mars

View Answer
(D) Mars

Question 25. In a reflecting telescope wherein the tube is the objective mirror placed? 

(A) The side of the tube

(B) The bottom of the tube

(C) The middle of the tube

(D) The top to the tube

View Answer
(B) The bottom of the tube
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