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प्रश्न
Study the picture and answer the questions that follow.
(a) What is meant by the Solar System?
(b) Give two differences between a planet and a star.
(c) Name the planets known as terrestrial planets.
(d) Give two advantages the earth has over other planets.
(e) What are satellites?
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उत्तर
(a) The sun along with eight planets and asteroids forms the Solar System.
(b)
- The stars like the sun radiate heat and light. Planets have no light of their own. They reflect the light of their stars.
- The stars are large burning masses very far from us while the planets are solid bodies nearer to us.
(c) The planets within the asteroids belt i.e. Mercury, Venus, Earth, and Mars, are called the Terrestrial planets.
(d)
- The earth enjoys an ideal average temperature of 17°C
- The earth consists of the life-system.
(e) The satellites are the celestial bodies that revolve around the planets.
संबंधित प्रश्न
Short Answer Question:
Name the two sources of heat in the interior of the earth.
Short Answer Question:
Name the members of the Solar System.
Short Answer Question:
How did the earth get its atmospheric blanket?
Fill in the blank:
Eratosthenes worked out the circumference of the earth to be _______ km.
What is the period of rotation of Moon?
Name the following:
Two planets which are nearer to the sun than the Earth.
Give reasons for the following:
Mercury completes its orbit in less time than the Earth.
Give reasons for the following:
Pluto is the coldest planet.
From which Greek word is the word ‘planet’ derived?
Use your brain power!
Suppose you want to give your address to a friend you have on the planet Mars. How will you write your address if you want them to understand exactly where you live?
