
How many planets are there in our solar system?
(A)
(B)
(C)
(D)
Answer
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Hint: Solar system contains the sun and everything bound to it by gravity. The solar system is the group of eight planets (their moons), asteroids, meteoroids, and comets. The planets of the solar system are mercury, Venus, earth, mars, Jupiter, Saturn, Uranus and Neptune.
Complete answer:
Note: Inner planets are mercury, Venus, mars, earth. Outer planets are Jupiter, Saturn, Uranus, Neptune. Earlier time, the solar system was considered as 9 planets. But Pluto was de- classified from being a planet. Jupiter is the biggest planet in our solar system, which is ten times greater than earth.
Complete answer:
The solar system is dependent on the sun and the only one which is self- luminous. Sun is also called the star of the our solar system, it is the heaviest object in the solar system. It looks like a ball of hot burning gas. The light from the sun takes approximately 8 minutes to reach earth. Planets are heavenly bodies, which revolve around the sun in elliptical orbits. Planets are classified into inner planets and outer planets. Asteroids are the ring shaped of small bodies, revolving between inner and outer planets.
Terminology of solar system
1. Objects orbiting the sun are divided into planets, dwarf planets, small solar system bodies.
2. A planet is any shaped bodies in orbit around the sun that
3. Has enough mass to form itself into spherical shape
4. Has cleared its immediate neighborhood of smaller object
So, there are 8 planets in our solar system.
Hence, option (B) is the right option.
Note: Inner planets are mercury, Venus, mars, earth. Outer planets are Jupiter, Saturn, Uranus, Neptune. Earlier time, the solar system was considered as 9 planets. But Pluto was de- classified from being a planet. Jupiter is the biggest planet in our solar system, which is ten times greater than earth.
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