Question 1: Which planet is closest to the sun?
Answer: (c) Mercury
Question 2: Which planet is farthest from the sun?
Answer: (d) Neptune
Question 3: Which is the largest planet in the solar system?
Answer: (a) Jupiter
Question 4: Which is the smallest planet in the solar system?
Answer: (b) Mercury
Question 5: Which is the hottest planet in the solar system?
Answer: (c) Venus
Question 6: The Earth has how many satellites?
Answer: (a) One
Question 7: Pole Star cannot be seen in which of the following countries?
Answer: (d) New Zealand
Question 8: Which is the brightest star in the night sky?
Answer: (a) Sirius
Question 1: What do you mean by celestial objects?
Answer: Any naturally occurring object in the observable universe is called a celestial body. Stars, planets, satellites, comets, etc. are examples of celestial objects.
Question 2: What is a light year?
Answer: The distance traveled by light in one year is called a light year.
Question 3: What is a constellation?
Answer: A group of stars which resembles certain recognizable shape is called a constellation.
Question 4: What is revolution?
Answer: The movement of a celestial body in its orbit is called revolution.
Question 5: What is rotation?
Answer: The movement of a celestial body around its axis is called rotation.
Question 6: What is a satellite?
Answer: A celestial body which moves around a planet is called satellite.
Question 7: What are comets?
Answer: A comet is a celestial body which revolves around the sun in a highly elliptical path.
Question 8: Halley’s Comet passes from near the earth after how many years?
Answer: 76 years
Question 9: What is a meteor?
Answer: When a small object from the space reaches the atmosphere of the earth; it enters at a very high speed. The high speed creates so much friction that the object burns off before reaching the earth. Such objects are called meteors.
Question 10: What is an artificial satellite?
Answer: Man-made satellites are called artificial satellites.
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