Question 1 (1 point)Which property of a star can be determined from its color?
mass
b
stellar distance
c
surface temperature
d
volume
Question 2 (1 point)Which main sequence stars are the least massive?
blue
b
orange
c
red
d
yellow
Question 3 (1 point)The sun belongs to which class of stars?
black hole
b
main sequence
c
red giant
d
white dwarf
Question 4 (1 point)Which terrestrial planet has a surface landscape similar to that of the older areas of the Earths moon?
Mercury
b
Neptune
c
Uranus
d
Venus
Question 5 (1 point)What can astronomers determine based on the observed red shifts in the spectral lines of distant galaxies?
Earth is in the center of the universe.
b
The universe is contracting.
c
The universe is expanding.
d
The universe is in a steady state.
Question 6 (1 point)Which of these discoveries led to the modern view of the solar system regarding the orbits of the planets?
circles
b
ellipses
c
hyperbolas
d
parabolas
Question 7 (1 point)Which features are found on both Mars and Earth?
active volcanoes
b
erosional features related to flowing water
c
impact craters preserved from early in the planets’ histories
d
oceans
Question 8 (1 point)When a medium-sized main sequence star like our sun has exhausted the fuel in its inner region it becomes which type of star?
black dwarf
b
black hole
c
brown dwarf
d
red giant
Question 9 (1 point)What is used to determine the distances to the stars?
emission nebulae
b
fluorescence
c
stellar mass
d
stellar parallax
Question 10 (1 point)The apparent backward drift of the planets compared to the background stars is known by what term?
occultation
b
precession
c
Ptolemaic motion
d
retrograde motion