1) compare and contrast the properties of the terrestrial planets and the Jovian planets 2) categorize the Pluto as either a Jovian planet, terrestrial planet, or other celestial object based upon its characteristics 3) identify the least dense and most dense planets and provide an explanation as to why they are the least and most dense. 4) explain why Pluto has been re-categorized as a dwarf planet. Solution 1) differences between terrestrial and jovian planets a) terrestrial planets are made of solid surface while jovian planets are made of gaseous surface b) jovian planets are much larger than terrestrial planets c) jovian planets are far away from the su d) the number of moons are higher in jovian planets e) terrestrial planets spin less and hence are flatter at the poles .