The Red Spot of Jupiter is:
A) variable in size
B) a high pressure storm system in the atmosphere
C) made of a reddish colored material (but we don't know what gives it the reddish color)
D) long-lived (observed since the 1600's)
E) all of the above
The bluish color that makes the atmosphere of Neptune so beautiful to the human eye is caused by the interaction of sunlight with what gas?
A) carbon dioxide
What was a surprise to astronomers when they carefully examined Neptune with the Hubble Space Telescope in 1994?
A) the magnetic field of the planet had reversed (north was now south)
B) new elements and compounds were found in the upper atmosphere that had not been there before
C) the Great Dark Spot had disappeared
D) the wind speeds had slowed considerably
E) a large smiley-face had been constructed using dark clouds
Which of the following statements about Jupiter's magnetosphere is TRUE?
A) its source is a zone directly above the planet's cloudtops
B) the magnetic field is 20 to 30 times weaker than the Earth's
C) it is tilted so that it is almost perpendicular (at 90 degrees) to the equator of Jupiter
D) it completely covers the inner satellites of Jupiter and is one of the largest structures in the solar system
E) it is easily visible to the human eye with a small telescope