Q1. Fill in the blanks.
i. The planet which is farthest from the Sun is _____________.
ii. The planet which appears reddish in colour is ________.
iii. A group of stars that appear to form a pattern in the sky is known as a _______________.
iv. A celestial body that revolves around a planet is known as _________.
v. Shooting stars are actually not _________.
vi. Asteroids are found between the orbits of _________ and _________.
vii. Stars appear to move from _________ to _____________.
viii. The Pole Star is not visible from the _____________ hemisphere.
ix. Orion is also called the __________.
Q2. State True (T) or False (F).
i. Pole Star is a member of the solar system. ___
ii. Constellation appears to move in the sky from east to west. ___
iii. Mercury is the smallest planet of the solar system. ___
iv. Uranus is the farthest planet in the solar system. ___
v. INSAT is an artificial satellite. ___
vi. There are nine planets in the solar system. ___
vii. The moon has no atmosphere. ___
viii. Constellation Orion can be seen only with a telescope. ___
ix. Ursa Major appears to revolve around the Pole Star. ___
x. Saturn appears yellowish in colour. ___
Q3. Which of the following is NOT a member of the solar system?
(a) An asteroid
(b) A satellite
(c) A constellation
(d) A comet
Q4. Which of the following is NOT a planet of the sun?
Q5. Phases of the moon occur because
(a) we can see only that part of the moon which reflects light towards
(b) our distance from the moon keeps changing.
(c) the shadow of the Earth covers only a part of moon’s surface.
(d) the thickness of the moon’s atmosphere is not constant.
Q6. Which is the nearest planet to the Sun?
Q7. What is a satellite?
Q8. Which is the farthest planet to the Sun?
Q9. Which two planets show phases like the Moon?
Q10. Which planet has large number of satellites?
Q11. Which was the first artificial satellite launched by India?
Q12. Which two planets have asteroids between them?
Q13. Which is the only natural satellite of Earth?
Q14. Name some artificial satellites of the Earth.
Q15. What is a light year?
Q16. What is the speed of light?
Q17. What time of year is the constellation Ursa Major visible?
Q18. What is the smallest planet in the solar system?
Q19. Which planet is the biggest planet in the solar system?