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प्रश्न
What do you know about Universe?
उत्तर
- The Universe is a vast expanse of space.
- The Universe consists of billions of galaxies, stars, planets, dwarf planets, comets, asteroids, meteoroids, and natural satellites.
- The exact size of the universe is still unknown. Scientists believe that the universe is still expanding outward.
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संबंधित प्रश्न
Match the following:
| Group A | Group B |
| (1) Galaxy | (a) From east to west |
| (2) Comet | (b) 33 satellites |
| (3) Sun-like star | (c) Spiral |
| (4) Saturn | (d) Sirius |
| (5) Venus | (e) Halley |
Look at the picture and answer the questions given below.
- Identify the planet.
- What is the colour of the planet?
- Why is it of this colour?
Write about the Planet Earth in detail.
______ is the prevailing model of Evolution of the Universe.
HOT Question
Neelan and Mala are having a conversation about our Universe. Neelan is telling our earth will be the only planet in the entire Universe to have a life with. But, Mala is opposing his view by citing certain points. What would be the argument of Mala. Do you support Mala? Justify your stand.
What is meant by light year?
Parsec is equal to ______.
According to the Big Bang theory, space and time emerged together about ______ billions of years ago.
The basic constituent of the universe is luminous matter.
Explain the salient features of the Big Bang Theory.
