Which of the following is not a major difference between the terrestrial and jovian planets in our solar system?
A) Terrestrial planets contain large quantities of ice and jovian planets do not.
B) Terrestrial planets orbit much closer to the Sun than jovian planets.
C) Terrestrial planets are higher in average density than jovian planets.
D) Jovian planets have rings and terrestrial planets do not.
Question 2If the rest wavelength of a certain line is 600 nm, but we observe it at 594 nm, then:
A) the source is approaching us at 1 of the speed of light.
B) the source is approaching us at 0.1 of the speed of light.
C) the source is receding from us at 10 of the speed of light.
D) the source is getting 1 hotter as we watch.
E) the source is spinning very rapidly, at 1 of the speed of light.
Question 3What are comets made of?
A) silicates and rocky dust
B) metallic dust particles
C) dark colored complex hydrocarbons
D) methane, ammonia, and water ice
E) All of the above.
Question 4What is the typical size of comets that enter the inner solar system?
A) 1 km
B) 10 km
C) 100 km
D) 1000 km
E) Comet sizes are unknown because their tails obscure the nucleus.
Quick Reply
