1. Answer the following questions briefly. (a) How does a planet differ from a star? (b) What is meant by the 'Solar System'? (c) Name all the planets according to their distance f... 1. Answer the following questions briefly. (a) How does a planet differ from a star? (b) What is meant by the 'Solar System'? (c) Name all the planets according to their distance from the sun. (d) Why is the Earth called a unique planet? (e) Why do we see only one side of the moon always? (f) What is the Universe? 2. Tick the correct answer. (a) The planet known as the 'Earth's Twin' is (i) Jupiter (ii) Saturn (iii) Venus. (b) Which is the third nearest planet to the sun? (i) Venus (ii) Earth (iii) Mercury. (c) All the planets move around the sun in a (i) Circular path (ii) Rectangular path (iii) Elongated path. (d) The Pole Star indicates the direction to the (i) South (ii) North (iii) East.
Understand the Problem
The question involves multiple exercises related to astronomy, asking for brief explanations about planets, the solar system, and the universe, as well as multiple-choice questions on specific planetary concepts.
Answer
1. Planets emit no light; stars do. Solar System = Sun + orbits; planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune. Earth's life support is unique. Moon's synchronous rotation shows one side. Universe is all space, matter. 2. Venus; Earth; Elongated; North.
- (a) A planet does not emit its own light and orbits a star, while a star produces its own light and heat. (b) The Solar System consists of the Sun and the celestial bodies that orbit it, including planets. (c) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune. (d) Earth is called unique because it supports life with its atmosphere and liquid water. (e) We see only one side of the moon due to its synchronous rotation with Earth. (f) The Universe is all of space and everything in it, including galaxies and planets. 2. (a) Venus (b) Earth (c) Elongated path (d) North.
Answer for screen readers
- (a) A planet does not emit its own light and orbits a star, while a star produces its own light and heat. (b) The Solar System consists of the Sun and the celestial bodies that orbit it, including planets. (c) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune. (d) Earth is called unique because it supports life with its atmosphere and liquid water. (e) We see only one side of the moon due to its synchronous rotation with Earth. (f) The Universe is all of space and everything in it, including galaxies and planets. 2. (a) Venus (b) Earth (c) Elongated path (d) North.
More Information
Planets reflect light and orbit stars, while stars generate light through nuclear fusion. Earth's atmosphere and water make it a livable planet.
Tips
A common mistake is confusing a planet's and star's characteristics or the order of planets. Remember that planets orbit stars and don't produce their own light.
Sources
AI-generated content may contain errors. Please verify critical information
Thank you for voting!
