03. Which elements and resources can we find on the different planets? (A K2S Question)

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Some planets—Earth, Mercury, Venus, and Mars—are hard, Earth-like, and are called terrestrial planets. Other planets are gaseous, like Jupiter, and are called Jovian planets. Of the terrestrial planets, only Earth has oxygen in its atmosphere and water on its surface. Carbon dioxide is abundant on Venus and Mars, while Mercury doesn't have an atmosphere, but like the Moon has helium-3 and hydrogen on it due to the Sun's solar winds; evidence of sodium and potassium is there as well. Approximately 75 percent of the asteroids are made up of carbon (carbonaceous) and are called C-type; 15 percent are made up of silicate, or rocky material, and are called S-type, and the other 10 percent are called M-type (metals), and are composed of large fractions of nickel and iron.

Answer provided by Trygve Magelssen


Image:K2S logosmall.jpg Question and Answer extracted from the book Kids to Space - by Lonnie Schorer


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