SOLAR SYSTEM

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: -Terrestrial planets are formed close to Sun where it was too warm for gases to condense to solid particles; only rocky particles remain. The solar wind was most intense near the sun, so it blew off lighter particles materials from terrestrial planets.

Detailed explanation-3: -Terrestrial planets are Earth-like planets made up of rocks or metals with a hard surface. Terrestrial planets also have a molten heavy-metal core, few moons and topological features such as valleys, volcanoes and craters.

Detailed explanation-4: -Yes, all terrestrial planets have solid surfaces since the terrestrial planets possess complex rocky surfaces.

Detailed explanation-5: -Rocky planets are made mostly of rock and metal. They have a hot core surrounded by a layer of hot rock called the mantle. On the surface is a thin layer of solid rock called the crust.