SOLAR SYSTEM

Detailed explanation-1: -From top: Mercury, Venus, Earth and Mars. 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: -Mercury, Venus, Earth, and Mars are the planets closest to the Sun. They are called the inner planets.

Detailed explanation-3: -Mars is the fourth planet from the Sun – a dusty, cold, desert world with a very thin atmosphere.

Detailed explanation-4: -The four inner, or terrestrial, planets-Mercury, Venus, Earth, and Mars-have rocky compositions and densities greater than 3 grams per cubic cm. (Water has a density of 1 gram per cubic cm.) In contrast, the four outer planets, also called the Jovian, or giant, planets-Jupiter, Saturn, Uranus, and Neptune-are large…

Detailed explanation-5: -Kid-Friendly Mercury It is the closest planet to the Sun, but it’s actually not the hottest. Venus is hotter. Along with Venus, Earth, and Mars, Mercury is one of the rocky planets. It has a solid surface that is covered with craters like our Moon.