(g) How is a moon different from a planet?
(h) Is Earth the only planet which has a Moon? Justify your answer with relevant facts
Answers
Answer:
(g) Difference Full explanation:
Planet is a heavenly body which revolves around a Star in a fixed orbit and it should have enough mass to acquire round shape under its own gravity and it cannot orbit another heavenly body other than its parent star.
A Moon or Natural Satellite is just like planet but differ in few aspects. Just like Planet it orbits a star but it also orbits a Planet while orbiting a star. So, its complete orbit is not circular or elliptical but is is torroidal. Any heavenly body orbiting a planet can be called as a Natural satellite if it has a fix orbit around a planet at any point in space.
(h) No, earth is not only the planet which has moon. you can find all the planets in solar system has moons. Such as Mars has two moons, Phobos and Deimos
Answer:
(g) A planet is a body that when compressed by gravity will not generate fusion, be it composed of mostly gas or mostly rocky material. It has a stable orbit around a star and also must be of a certain size. Pluto is not a planet mostly due to the fact that is is smaller that our own Moon.A moon is a rocky celestial body that orbits, mainly, a planet. Big planets may have moons that, if it orbited the star, would be considered a planet.
(h) No, earth is not only the planet which has moon. you can find all the planets in solar system has moons. Such as Mars has two moons, Phobos and Deimos.