SOLAR SYSTEM

Detailed explanation-1: -In the inner solar system, only substances with very high melting points would have remained solid. All the rest would have vaoprized. So the inner solar system objects are made of iron, silicon, magnesium, sulfer, aluminum, calcium and nickel. Many of these were present in compounds with oxygen.

Detailed explanation-2: -Inner planets: the four closet to the sun. They are also called the “terrestrial planets” because they are made mostly of rock and metal.

Detailed explanation-3: -The inner planets of our solar system, Mercury, Venus, Earth, and Mars, originated from small dust and larger particles in the solar nebula that collided with each other over millions of years forming larger and larger particles (Figure 1a). These eventually became protoplanets.

Detailed explanation-4: -The following are reasons being terrestrial planets rocky 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-5: -Much like Earth, Venus and Mars, Mercury is a terrestrial planet, meaning that it is composed of silicate minerals and metals that are differentiated into an iron core and silicate mantle and crust. But unlike the other rocky planets of the solar system, iron makes up a disproportionately large amount of the planet.