-02
1. Jupiter
4. Earth
1 Describe in detail the big bang theory ?
2 what are constellation ? explain
3. Venus
6. Saturn
5. Neptune
8. Mercury
7. Uranus
D./Answer the following questions in brief.
1. Write a brief note on the Milky Way.
2.
How many galaxies make up a universe? To which galaxy do we belong?
3. What is a light year?
4. What is the basic difference between meteoroids, meteors and meteorites?
5. What do you know about Pluto?
6. What is the difference between waxing and waning of moon?
E. Answer the following questions in detail.
1. Describe in detail the Big Bang Theory.
2. What are constellations? Explain.
3. Explain the two types of movement of the planets.
4. Why do planets not collide?
5. Why does life exist only on earth?
6. What are comets? Why do they have tails?
How
Rock Your BRAIN
Answers
Answer:
E.
6) When far from the sun, a comet is like a stone rolling around the universe. But when it approaches the sun, the heat evaporates the comet's gases, causing it to emit dust and microparticles (electrons and ions). These materials form a tail whose flow is affected by the sun's radiation pressure.
5) All living things on earth have adapted to our atmosphere, which means all living things need our mix of atmospheric gases. Life elsewhere would be specifically adapted to their own conditions. Water is a really important ingredient to sustain the kind of life we know on Earth.
4) Every planet is at a different distance from the Sun and has a fixed orbit in which it revolves around the Sun. The Sun"s gravitational force holds the planets in this place and they do not collide with each other as their orbits are non-intersecting.
3) Planets have two types of movement: rotation and revolution. ... Rotation is the movement caused when a planet rotates on its axis; for example, the Earth rotates from west to east on its axis. 2. Revolution is the movement when a planet revolves around the Sun in a fixed path.
2) A constellation is a group of stars that appears to form a pattern or picture like Orion the Great Hunter, Leo the Lion, or Taurus the Bull. Constellations are easily recognizable patterns that help people orient themselves using the night sky.
1) In short, the Big Bang hypothesis states that all of the current and past matter in the Universe came into existence at the same time, roughly 13.8 billion years ago. At this time, all matter was compacted into a very small ball with infinite density and intense heat called a Singularity.