Long answer type questions
1. Differentiate between: (a) inner and outer planets, (b) asteroids and meteoroids (c) planets
and stars
Answers
The inner planets are closer to the Sun and are smaller and rockier. The outer planets are further away, larger and made up mostly of gas. The inner planets (in order of distance from the sun, closest to furthest) are Mercury, Venus, Earth and Mars.
a) The inner planets are closer to the Sun and are smaller and rockier. The outer planets are further away, larger and made up mostly of gas.
b) The difference between asteroid and meteoroid is provided here. There are a countless number of objects in the universe orbiting the Sun. Asteroids and meteoroids are commonly known celestial bodies sharing a few common things such as staying close to planets and orbiting the Sun.
c) Stars are the astronomical objects, that emit their own light, produced due to thermonuclear fusion, occurring at its core. Planets refers to the celestial object that has a fixed path (orbit), in which it moves around the star. They have their own light. They do not have their own light.