Question 1
What is the most abundant element in the atmospheres of Jupiter and Saturn?
◦ hydrogen
◦ helium
◦ nitrogen
◦ ammonia
Question 2
Several of the moons of Saturn, Uranus and Neptune display evidence of volcanic activity. What is the most common type of volcano on these moons?
◦ ice volcanos
◦ basalt shield volcanos
◦ pyroclastic eruptions of rhyolitic silicate material
◦ sulfur volcanos