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Question 13 Marks

Through your observation:
In which direction do leaves from a tree, rocks from a hillside or rain from the sky fall?

Answer

Due to earth’s gravity all things fall down to the ground.

Question 23 Marks

Give details of Mangalyaan on the basis of the following points:
(a) Another name of Mangalyaan,
(b) Date of launch,
(c) Date of orbiting,
(d) Attempts made to achieve success,
(e) Type of mission,
(f) Objective of the mission.

Answer

(a) Mass Orbit Mission
(b) 5 November 2013
(c) 24 September 2014
(d) one
(e) unmanned
(f) Deeper study of the moon and mass.

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Question 33 Marks

Distinguish between stars and planets:

Answer

Stars	Planets
(a) Stars twinkle.	(a) Planets do not twinkle.
(b) Stars have their own light.	(b) Planets do not have their own light.
(c) For e.g. The sun.	(c) For e.g. The earth.

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Question 43 Marks

Asteriods

Answer

1. Small heavenly bodies between the planets Mars and Jupiter are called asteroids.
2. They move in a form of a band and are numerous.
3. They revolve around the sun.

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Question 53 Marks

Dwarf planets

Answer

1. Dwarf planets are smaller heavenly bodies that revolve around the sun.
2. The most well known is Pluto.
3. They revolve around the sun independently.
4. They have their own orbit.

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