1. The expected seasonal changes on Uranus because of its orbital and spin-axis alignments, compared with those on Earth, are: a. absent because of the alignment of the spin axis.
b. very much exaggerated.
c. much less.
d. the same.

2. The major constituent in the interior of Saturn is:

a. carbon dioxide.
b. rock.
c. nitrogen.
d. hydrogen.

3. Around which object does Titan orbit?

a. Jupiter
b. Neptune
c. Pluto
d. Saturn

4. The rotation axis of which planet is tilted at 98° from the vertical to its orbit?

a. Uranus
b. Neptune
c. Earth
d. Venus

5. What is the visual appearance of Uranus from space?

a. blue-green with distinct white, high-altitude clouds and dark storms
b. blue-green and featureless
c. reddish belts and light zones parallel to the equator
d. perpetually covered with yellowish, sulfur-rich clouds

6. Which planet is characterized by a blue-green appearance and white, high-altitude methane clouds surrounding dark storms?

a. Uranus
b. Neptune
c. Saturn
d. Jupiter