GENERAL KNOWLEDGE

Detailed explanation-1: -The planets Mercury, Venus, Earth, and Mars, are called terrestrial because they have a compact, rocky surface like Earth’s terra firma. The terrestrial planets are the four innermost planets in the solar system.

Detailed explanation-2: -In our solar system, Earth, Mars, Mercury and Venus are terrestrial, or rocky, planets.

Detailed explanation-3: -Pluto is about two-thirds the diameter of Earth’s Moon and probably has a rocky core surrounded by a mantle of water ice. Interesting ices like methane and nitrogen frost coat the surface.

Detailed explanation-4: -Planets which are found inside the orbit of Mars are known as terrestrial planets. The terrestrial planets are Mercury, Venus, Earth and Mars. Their characteristics are as follows: The structure of these planets resembles the structure of the earth.