EAPS 105: 60 Exam 1 Review Questions With Answers|19 Pages
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Module
EAPS 105
Institution
EAPS 105
About what percent of the mass of our Solar System's planets is contained in Jupiter?
A) 50.0%
B) 70.0%
C) 85.0%
D) 99.9% - ️️B) 70.0%
About what percent of the Solar System's mass is contained in the Sun?
A) 50.0%
B) 70.0%
C) 85.0%
D) 99.9% - ️️D) 99.9%
According to Kepler's ...
About what percent of the mass of our Solar System's planets is contained in
Jupiter?
A) 50.0%
B) 70.0%
C) 85.0%
D) 99.9% - ✔ ✔ B) 70.0%
About what percent of the Solar System's mass is contained in the Sun?
A) 50.0%
B) 70.0%
C) 85.0%
D) 99.9% - ✔ ✔ D) 99.9%
According to Kepler's 3rd Law, which of the following influences the time it takes
a planet to orbit the Sun?
A) Its mass
B) Its density
C) Its orbital radius
D) Its spin rate - ✔ ✔ C) Its orbital radius
,Aside from hydrogen and helium, what is the most abundant element in our Sun
and therefore in the original accretionary disc?
A) Oxygen
B) Carbon
C) Nitrogen
D) Silicon - ✔ ✔ A) Oxygen
Based on the conservation of angular momentum, how does one expect the
planets to spin?
A) Planets should spin in the same direction they orbit.
B) Planets should spin about an axis perpendicular to the plane of the solar
system (known as the ecliptic).
C) Planets should spin faster than the average rotation of the accreted material
since accretion reduces the average radius of the collection of accreted objects.
D) All of the above - ✔ ✔ D) All of the above
How is the chemistry of the Sun determined?
A) From its continuous spectrum
B) From its emission spectrum
C) From its absorption spectrum
D) None of the above - ✔ ✔ C) From its absorption spectrum
, How many times does the Moon rotate about its spin axis during each orbit
around the Earth?
A) 0 times
B) 1 time
C) 24 times
D) 28 times - ✔ ✔ B) 1 time
If the availability of mass to build planets increases with distance from the Sun
because of larger orbits, why did the cores of Uranus and Neptune grow slower
than that of Saturn and Jupiter?
A) Collisions between objects happen less frequently in the larger volume of the
larger orbits, so Uranus and Neptune grew more slowly despite more material
being available.
B) Despite the larger orbits, there was less material available because the density
of the accretionary disc dropped off rapidly beyond Saturn.
C) Jupiter and Saturn grew slightly faster and then gravitationally captured or
ejected material from the orbits of Uranus and Neptune, stunting their growth.
D) All the above may have contributed to Uranus and Neptune developing smaller
cores. - ✔ ✔ D) All the above may have contributed to Uranus and Neptune
developing smaller cores.
True/False: In 100 million years our Moon will no longer make a perfect eclipse of
our Sun.
A) True
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