Question 1
What moon in the outer solar system is most "earthlike" in terms of landforms, and possesses liquids (liquid methane not water) flowing across the surface?
◦ Europa
◦ Titan
◦ Tethys
◦ Ganymede
Question 2
Neptune and Uranus both appear bluish in sunlight whereas Jupiter and Saturn are multicolored. Why are Neptune and Uranus blue?
◦ They do not contain dust and debris in the atmosphere, like Saturn and Jupiter.
◦ They contain methane ice in their atmosphere which causes the color.
◦ They contain ice crystals high in the atmosphere, and water ice is blue.
◦ The effect is not real; it is just due to low light levels.