Iâve come up with fewer reasons for giving a child a cell phone earlier, but at least two of them are enough to offset a multitude of others. Keeping tabs on them. As each year passes in a childâs life they venture farther from home and for longer periods of time.
Like the inner planets, the outer planets have similar characteristics to one another. The outer planets are so much larger than the inner planets that they make up 99 percent of the mass of the celestial bodies that orbit the Sun. Although mainly composed of gas, the outer planets also have other ingredients.
Terrestrial Planets. The innermost four planets of our solar system are called the âterrestrialâ planets, which comes from the word âtelluricâ. It is derived from the Latin words âterraâ and âtellusâ, used to refer to Earth.The terrestrial planets (in order of their distances from the Sun) are Mercury, Venus, Earth and Mars.They are made mostly of silicate rocks and metals, with solid surfaces and atmospheres that range from thick (on Venus) to very thin (on Mercury).errestrial Planets. The innermost four planets of our solar system are called the âterrestrialâ planets, which comes from the word âtelluricâ. It is derived from the Latin words âterraâ and âtellusâ, used to refer to Earth.