EAPS 105 COMPREHENSIVE EXAM ANSWERS AND
QUESTIONS SET A+
✔✔Quiz 4: Unit 2. Part 4. Question 5. Watch the Unit 2 Part 4 lecture video and answer
the following question: Which of the following is not a reason why the cores of Jupiter
and Saturn to grow much more massive than the entire Earth? - ✔✔The density of the
accretionary disc increases with distance from the Sun
✔✔Quiz 4: Unit 2. Part 4. Question 6. Watch the Unit 2 Part 4 lecture video and answer
the following question: What happens in the first 3-10 million years after the birth of the
Sun that causes the hydrogen and helium gas to disappear? - ✔✔It gets blown out by
the solar win
✔✔Quiz 4: Unit 2. Part 4. Question 7. Watch the Unit 2 Part 4 lecture video and answer
the following question: 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? - ✔✔All the above may have contributed to
Uranus and Neptune developing smaller cores.
✔✔Quiz 4: Unit 2. Part 5. Question 8. Watch the Unit 2 Part 5 lecture video and answer
the following question: Why are all of Earth's tallest mountains in the 8 km range? -
✔✔That is the limit of rock strength posed by Earth's gravity
✔✔Quiz 4: Unit 2. Part 5. Question 9. Watch the Unit 2 Part 5 lecture video and answer
the following question: Which of the following does Mars have because of its relative
low gravity? - ✔✔All of the above
✔✔Quiz 4: Unit 2. Part 5. Question 10. Watch the Unit 2 Part 5 lecture video and
answer the following question: Why does the asteroid Ryugu have an equatorial bulge?
- ✔✔Its fast rotation
,✔✔Quiz 5: Unit 3. Part 1. Question 1. Watch the Unit 3 Part 1 lecture video and answer
the following question: Where is the angular velocity of a rotating solar nebula slowest?
- ✔✔Farthest from the star
✔✔Quiz 5: Unit 3. Part 1. Question 2. Watch the Unit 3 Part 1 lecture video and answer
the following question: Why are the axes of rotation of the planets not found to align
perpendicular to the ecliptic?
a. Gravitational interactions with each other
b. Violent impacts
c. Changes in the distribution of mass within the planet
d. all of the above - ✔✔All of the above
✔✔Quiz 5: Unit 3. Part 1. Question 3. Watch the Unit 3 Part 1 lecture video and answer
the following question: Why does the tilt of Mars vary so much more than the tilt of
Earth?
a. It is smaller than Earth, thus more easily influenced by changes to its mass
distribution and the gravitational influences of other planets.
b. It does not have a large stabilizing moon.
c. It is closer to Jupiter and Saturn.
d. All the above - ✔✔All of the above
✔✔Quiz 5: Unit 3. Part 1. Question 4. Watch the Unit 3 Part 1 lecture video and answer
the following question: Simply from the conservation of angular momentum, how fast
will a planet with more mass spin compared to a planet with little mass? - ✔✔The more
massive planet will spin faster
✔✔Quiz 5: Unit 3. Part 2. Question 5. Watch the Unit 3 Part 2 lecture video and answer
the following question: What is a spring tide? - ✔✔When the Moon and Sun tides align,
high tides are highest and low tides are lowest.
✔✔Quiz 5: Unit 3. Part 2. Question 6. Watch the Unit 3 Part 2 lecture video and answer
the following question: If a moon is tidally locked to a planet, how many times does it
rotate about its spin axis during each orbit around the planet? - ✔✔1 time
✔✔Quiz 5: Unit 3. Part 2. Question 7. Watch the Unit 3 Part 2 lecture video and answer
the following question: What is a diurnal day? - ✔✔The time it takes to complete a full
rotation relative to the fixed stars.
✔✔Quiz 5: Unit 3. Part 3. Question 8. Watch the Unit 3 Part 3 lecture video and answer
the following question: What was at the center of Aristotle's universe? - ✔✔The Earth
✔✔Quiz 5: Unit 3. Part 3. Question 9. Watch the Unit 3 Part 3 lecture video and answer
the following question: Why is Mercury's orbit more eccentric than the orbits of the other
terrestrail planets? - ✔✔It is perturbed by Jupiter's gravity
, ✔✔Quiz 5: Unit 3. Part 3. Question 10. Watch the Unit 3 Part 3 lecture video and
answer the following question: According to Kepler's second law. What happens when a
planet approaches the Sun in its orbit? - ✔✔It speeds up
✔✔Quiz 6: Unit 3. Part 4. Question 1. Watch the Unit 3 Part 4 lecture video and answer
the following question: What force besides gravity controls the orbit of a planet or
moon? - ✔✔centrifugal
✔✔Quiz 6: Unit 3. Part 4. Question 2. Watch the Unit 3 Part 4 lecture video and answer
the following question: What happens if you launch from a planet with very little angular
velocity? - ✔✔You crash back onto the planet
✔✔Quiz 6: Unit 3. Part 4. Question 3. Watch the Unit 3 Part 4 lecture video and answer
the following question: What is the shape of the orbit that represent the boundary
between an object being in a stable orbit around a host object and not being in orbit? -
✔✔Parabola (e = 1)
✔✔Quiz 6: Unit 3. Part 4. Question 4. Watch the Unit 3 Part 4 lecture video and answer
the following question: Which orbits with the highest angular velocity? - ✔✔The
International Space Station
✔✔Quiz 6: Unit 3. Part 4. Question 5. Watch the Unit 3 Part 4 lecture video and answer
the following question: Which of the following are the two parameters used to measure
the mass of a planet? - ✔✔The orbital radius and angular velocity of an orbiting moon
✔✔Quiz 6: Unit 3. Part 5. Question 6. Watch the Unit 3 Part 5 lecture video and answer
the following question: What is the name given to a Jupiter-sized exoplanet that orbits
very close to its star? - ✔✔A hot Jupiter
✔✔Quiz 6: Unit 3. Part 5. Question 7. Watch the Unit 3 Part 5 lecture video and answer
the following question: What is a rogue planet? - ✔✔A planet that no longer orbits its
star.
✔✔Quiz 6: Unit 3. Part 5. Question 8. Watch the Unit 3 Part 5 lecture video and answer
the following question: What is it called when two or more bodies orbit at multiples of the
same orbital period? - ✔✔An orbital resonance
✔✔Quiz 6: Unit 3. Part 5. Question 9. Watch the Unit 3 Part 5 lecture video and answer
the following question: During the Grand Tack, what direction did Jupiter and Saturn
move? - ✔✔First toward then away from the Sun
QUESTIONS SET A+
✔✔Quiz 4: Unit 2. Part 4. Question 5. Watch the Unit 2 Part 4 lecture video and answer
the following question: Which of the following is not a reason why the cores of Jupiter
and Saturn to grow much more massive than the entire Earth? - ✔✔The density of the
accretionary disc increases with distance from the Sun
✔✔Quiz 4: Unit 2. Part 4. Question 6. Watch the Unit 2 Part 4 lecture video and answer
the following question: What happens in the first 3-10 million years after the birth of the
Sun that causes the hydrogen and helium gas to disappear? - ✔✔It gets blown out by
the solar win
✔✔Quiz 4: Unit 2. Part 4. Question 7. Watch the Unit 2 Part 4 lecture video and answer
the following question: 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? - ✔✔All the above may have contributed to
Uranus and Neptune developing smaller cores.
✔✔Quiz 4: Unit 2. Part 5. Question 8. Watch the Unit 2 Part 5 lecture video and answer
the following question: Why are all of Earth's tallest mountains in the 8 km range? -
✔✔That is the limit of rock strength posed by Earth's gravity
✔✔Quiz 4: Unit 2. Part 5. Question 9. Watch the Unit 2 Part 5 lecture video and answer
the following question: Which of the following does Mars have because of its relative
low gravity? - ✔✔All of the above
✔✔Quiz 4: Unit 2. Part 5. Question 10. Watch the Unit 2 Part 5 lecture video and
answer the following question: Why does the asteroid Ryugu have an equatorial bulge?
- ✔✔Its fast rotation
,✔✔Quiz 5: Unit 3. Part 1. Question 1. Watch the Unit 3 Part 1 lecture video and answer
the following question: Where is the angular velocity of a rotating solar nebula slowest?
- ✔✔Farthest from the star
✔✔Quiz 5: Unit 3. Part 1. Question 2. Watch the Unit 3 Part 1 lecture video and answer
the following question: Why are the axes of rotation of the planets not found to align
perpendicular to the ecliptic?
a. Gravitational interactions with each other
b. Violent impacts
c. Changes in the distribution of mass within the planet
d. all of the above - ✔✔All of the above
✔✔Quiz 5: Unit 3. Part 1. Question 3. Watch the Unit 3 Part 1 lecture video and answer
the following question: Why does the tilt of Mars vary so much more than the tilt of
Earth?
a. It is smaller than Earth, thus more easily influenced by changes to its mass
distribution and the gravitational influences of other planets.
b. It does not have a large stabilizing moon.
c. It is closer to Jupiter and Saturn.
d. All the above - ✔✔All of the above
✔✔Quiz 5: Unit 3. Part 1. Question 4. Watch the Unit 3 Part 1 lecture video and answer
the following question: Simply from the conservation of angular momentum, how fast
will a planet with more mass spin compared to a planet with little mass? - ✔✔The more
massive planet will spin faster
✔✔Quiz 5: Unit 3. Part 2. Question 5. Watch the Unit 3 Part 2 lecture video and answer
the following question: What is a spring tide? - ✔✔When the Moon and Sun tides align,
high tides are highest and low tides are lowest.
✔✔Quiz 5: Unit 3. Part 2. Question 6. Watch the Unit 3 Part 2 lecture video and answer
the following question: If a moon is tidally locked to a planet, how many times does it
rotate about its spin axis during each orbit around the planet? - ✔✔1 time
✔✔Quiz 5: Unit 3. Part 2. Question 7. Watch the Unit 3 Part 2 lecture video and answer
the following question: What is a diurnal day? - ✔✔The time it takes to complete a full
rotation relative to the fixed stars.
✔✔Quiz 5: Unit 3. Part 3. Question 8. Watch the Unit 3 Part 3 lecture video and answer
the following question: What was at the center of Aristotle's universe? - ✔✔The Earth
✔✔Quiz 5: Unit 3. Part 3. Question 9. Watch the Unit 3 Part 3 lecture video and answer
the following question: Why is Mercury's orbit more eccentric than the orbits of the other
terrestrail planets? - ✔✔It is perturbed by Jupiter's gravity
, ✔✔Quiz 5: Unit 3. Part 3. Question 10. Watch the Unit 3 Part 3 lecture video and
answer the following question: According to Kepler's second law. What happens when a
planet approaches the Sun in its orbit? - ✔✔It speeds up
✔✔Quiz 6: Unit 3. Part 4. Question 1. Watch the Unit 3 Part 4 lecture video and answer
the following question: What force besides gravity controls the orbit of a planet or
moon? - ✔✔centrifugal
✔✔Quiz 6: Unit 3. Part 4. Question 2. Watch the Unit 3 Part 4 lecture video and answer
the following question: What happens if you launch from a planet with very little angular
velocity? - ✔✔You crash back onto the planet
✔✔Quiz 6: Unit 3. Part 4. Question 3. Watch the Unit 3 Part 4 lecture video and answer
the following question: What is the shape of the orbit that represent the boundary
between an object being in a stable orbit around a host object and not being in orbit? -
✔✔Parabola (e = 1)
✔✔Quiz 6: Unit 3. Part 4. Question 4. Watch the Unit 3 Part 4 lecture video and answer
the following question: Which orbits with the highest angular velocity? - ✔✔The
International Space Station
✔✔Quiz 6: Unit 3. Part 4. Question 5. Watch the Unit 3 Part 4 lecture video and answer
the following question: Which of the following are the two parameters used to measure
the mass of a planet? - ✔✔The orbital radius and angular velocity of an orbiting moon
✔✔Quiz 6: Unit 3. Part 5. Question 6. Watch the Unit 3 Part 5 lecture video and answer
the following question: What is the name given to a Jupiter-sized exoplanet that orbits
very close to its star? - ✔✔A hot Jupiter
✔✔Quiz 6: Unit 3. Part 5. Question 7. Watch the Unit 3 Part 5 lecture video and answer
the following question: What is a rogue planet? - ✔✔A planet that no longer orbits its
star.
✔✔Quiz 6: Unit 3. Part 5. Question 8. Watch the Unit 3 Part 5 lecture video and answer
the following question: What is it called when two or more bodies orbit at multiples of the
same orbital period? - ✔✔An orbital resonance
✔✔Quiz 6: Unit 3. Part 5. Question 9. Watch the Unit 3 Part 5 lecture video and answer
the following question: During the Grand Tack, what direction did Jupiter and Saturn
move? - ✔✔First toward then away from the Sun
