Q. Mark the following statements as true (T) or false (F):
(a) Pole Star is a member of the solar system. ( )
(b) Mercury is the smallest planet of the solar system. ( )
(c) Uranus if the farthest planet in the solar system. ( )
(d) INSAT is an artificial satellite. ( )
(e) There are nine planets in the solar system. ( )
(f) Constellation Orion can be seen only with a telescope. ( )

Q. The radius of Jupiter is $11$ times the radius of the Earth. Calculate the ratio of the volumes of Jupiter and the Earth. How many Earths can Jupiter accommodate?

Q. Why is the distance between stars expressed in light years? What do you understand by the statement that a star is eight light years away from the Earth?

Q. Explain how you can locate the Pole Star with the help of Ursa Major.

Q. Boojho made the following sketch of the solar system. Is the sketch correct? If not, correct it.

Q. Name the largest planet of the solar system.

Q. Which of the following is NOT a planet of our Solar System?

1. Sirius
2. Mercury
3. Earth
4. Saturn

Q. Which of the following is NOT a member of the solar system?

1. An asteroid
2. A satellite
3. A constellation
4. A comet

Q. Phases of the moon occur because:

1. Our distance from the moon keeps changing
2. We can see only that part of the moon which reflects light towards us
3. The shadow of the Earth covers only a part of moon's surface
4. The thickness of the moon's atmosphere is not constant

Q. Draw sketches to show the relative positions of prominent stars in
(a) Ursa Major and (b) Orion

Q. What is a constellation? Name any two constellations.

Q. Fill in the blanks:
(a) The planet which is farthest from the Sun is _______.
(b) The planet which appears reddish in colour is ______.
(c) A group of stars that appear to form a pattern in the sky is known as _____.
(d) A celestial body that revolves around a planet is known as ______.
(e) Shooting stars are actually not ______.
(f) Asteroids are found between the orbits of _____ and ______.

Q. In which part of the sky can you find Venus if it is visible as an evening star?

Q. Do all the stars in the sky move? Explain.

Q. Name two objects other than planets which are members of the solar system?

Q. Match items in column A with one or more items in column B: