Steinkraus 
Planetas gigantes de gas: Júpiter, Saturno, Urano y Neptuno [PDF ebook] 
Giant Gas Planets: Jupiter, Saturn, Uranus, and Neptune

The four planets farthest from the Sun are called the gas giants. Jupiter, Saturn, Uranus, and Neptune are different from the other planets in our solar system. They are not solid, but are made of liquids and clouds of gas with gravity pulling it all together into a planet shape. Learn facts about the climate, gases, size, and other quirky things each of the planets possess. This book isn’t filled with hot air! Pull out your telescope and see if you can observe one of these planets. This book will allow students to understand that patterns in the natural world can be observed, used to describe phenomena, and used as evidence.