Which physical property in Laplace's nebular hypothesis could not explain the Sun's slow rotation?
a. angular momentum
b. angular diameter
c. gravitational pull
d. radiation pressure
e. electromagnetic energy
Question 2A star's absolute visual magnitude depends only on the star's ______ and _____.
a. temperature; mass
b. diameter; mass
c. temperature; density
d. diameter; density
e. distance; magnitude
Question 3Who was the first to propose solar system formation with gravity as a key component of the hypothesis?
a. Isaac Newton
b. Ren Descartes
c. Pierre-Simon de Laplace
d. Georges-Louis de Buffon
e. Emanuel Swedenborg
Question 4The stellar parallax limit for ground-based telescopes is accurate for stars closer than ____.
a. 10 parsecs
b. 50 parsecs
c. 100 parsecs
d. 200 parsecs
e. 500 parsecs
Question 5Descartes' hypothesis of solar system formation was problematic because he did not understand the ____.
a. involvement of condensation
b. involvement of contraction
c. difference in the planets
d. involvement of gravity
e. gaseous properties of the Sun
Question 6Absolute visual magnitude is calculated at a standard distance of ____.
a. one light year
b. one parsec
c. 10 light years
d. 10 parsecs
e. 100 parsecs
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