AST 1002 Exam 2 Guide With
Complete Solution
Overall, what do current data suggest about planetary types in other
planetary systems?
A) Planets come in a wider range of types than the planets in our solar
system.
B) Jovian planets are very common while terrestrial planets are very rare.
C) All planets fall into the same terrestrial and jovian categories as the
planets in our solar system.
D) Planets that fall into either the terrestrial or jovian categories are
extremely rare outside of our own solar system. - ANSWER A) Planets come
in a wider range of types than the planets in our solar system.
The more massive planets in the solar system tend to be less dense than the
lower mass planets.
TRUE or FALSE? - ANSWER True
All the planets in the solar system have at least one moon.
TRUE or FALSE? - ANSWER False
The composition of the solar nebula was 98%
A) rock and metal.
B) hydrogen compounds.
,C) hydrogen and helium. - ANSWER C) hydrogen and helium
What is Jupiter's main ingredient?
A) hydrogen and helium
B) hydrogen compounds
C) rock and metal - ANSWER A) hydrogen and helium
Planetary orbits in our solar system are:
A) very eccentric (stretched-out) ellipses and in the same plane.
B) fairly circular and in the same plane.
C) fairly circular but oriented in every direction. - ANSWER B) fairly circular
and in the same plane
Suppose you view the solar system from high above Earth's North Pole.
Which of the following statements about planetary orbits will be true?
A) The inner planets orbit the Sun clockwise while the outer planets orbit the
Sun counterclockwise.
B) All the planets except Uranus orbit the Sun counterclockwise; Uranus
orbits in the opposite direction.
C) The inner planets orbit the Sun counterclockwise while the outer planets
orbit the Sun clockwise.
D) All the planets orbit counterclockwise around the Sun. - ANSWER D) All
the planets orbit counterclockwise around the Sun.
Which of the following is not a characteristic of the outer planets?
,A) They have rings.
B) Their orbits are separated by relatively large distances.
C) They are primarily made of hydrogen, helium, and hydrogen compounds.
D) They have thick atmospheres.
E) They have relatively high densities. - ANSWER E) They have relatively high
densities.
Which of the following is not a characteristic of the inner planets?
A) They have substantial atmospheres.
B) They have solid, rocky surfaces.
C) Their orbits are relatively closely spaced.
D) They have relatively high densities.
E) They are smaller than the outer planets. - ANSWER A) They have
substantial atmospheres.
How does the Sun's mass compare with that of the planets?
A) It is about a hundred times more massive than all the planets combined.
B) It is about a hundred times more massive than Earth.
C) It is about as massive as all the planets combined.
D) It is about a thousand times more massive than Earth.
E) It is about a thousand times more massive than all the planets combined. -
ANSWER E) It is about a thousand times more massive than all the planets
combined.
, Which of the following lists the planets of our solar system in the correct
order from closest to farthest from the Sun?
A) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
B) Mercury, Venus, Mars, Earth, Saturn, Jupiter, Neptune, Uranus
C) Mercury, Earth, Venus, Mars, Jupiter, Saturn, Neptune, Uranus
D) Earth, Mars, Mercury, Venus, Jupiter, Saturn, Uranus, Neptune - ANSWER
A) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Based on our theory of how our own solar system formed, we would expect
that other solar systems would be quite common.
TRUE or FALSE? - ANSWER True
Which of the following did not occur during the collapse of the solar nebula?
A) heating up
B) concentrating denser materials nearer the Sun
C) spinning faster - ANSWER B) concentrating denser materials nearer the
Sun
In essence, the nebular theory holds that _________.
A) our solar system formed from the collapse of an interstellar cloud of gas
and dust
B) nebulae are clouds of gas and dust in space
C) the nebular theory is a discarded idea that imagined planets forming as a
result of a near-collision between our Sun and another star
Complete Solution
Overall, what do current data suggest about planetary types in other
planetary systems?
A) Planets come in a wider range of types than the planets in our solar
system.
B) Jovian planets are very common while terrestrial planets are very rare.
C) All planets fall into the same terrestrial and jovian categories as the
planets in our solar system.
D) Planets that fall into either the terrestrial or jovian categories are
extremely rare outside of our own solar system. - ANSWER A) Planets come
in a wider range of types than the planets in our solar system.
The more massive planets in the solar system tend to be less dense than the
lower mass planets.
TRUE or FALSE? - ANSWER True
All the planets in the solar system have at least one moon.
TRUE or FALSE? - ANSWER False
The composition of the solar nebula was 98%
A) rock and metal.
B) hydrogen compounds.
,C) hydrogen and helium. - ANSWER C) hydrogen and helium
What is Jupiter's main ingredient?
A) hydrogen and helium
B) hydrogen compounds
C) rock and metal - ANSWER A) hydrogen and helium
Planetary orbits in our solar system are:
A) very eccentric (stretched-out) ellipses and in the same plane.
B) fairly circular and in the same plane.
C) fairly circular but oriented in every direction. - ANSWER B) fairly circular
and in the same plane
Suppose you view the solar system from high above Earth's North Pole.
Which of the following statements about planetary orbits will be true?
A) The inner planets orbit the Sun clockwise while the outer planets orbit the
Sun counterclockwise.
B) All the planets except Uranus orbit the Sun counterclockwise; Uranus
orbits in the opposite direction.
C) The inner planets orbit the Sun counterclockwise while the outer planets
orbit the Sun clockwise.
D) All the planets orbit counterclockwise around the Sun. - ANSWER D) All
the planets orbit counterclockwise around the Sun.
Which of the following is not a characteristic of the outer planets?
,A) They have rings.
B) Their orbits are separated by relatively large distances.
C) They are primarily made of hydrogen, helium, and hydrogen compounds.
D) They have thick atmospheres.
E) They have relatively high densities. - ANSWER E) They have relatively high
densities.
Which of the following is not a characteristic of the inner planets?
A) They have substantial atmospheres.
B) They have solid, rocky surfaces.
C) Their orbits are relatively closely spaced.
D) They have relatively high densities.
E) They are smaller than the outer planets. - ANSWER A) They have
substantial atmospheres.
How does the Sun's mass compare with that of the planets?
A) It is about a hundred times more massive than all the planets combined.
B) It is about a hundred times more massive than Earth.
C) It is about as massive as all the planets combined.
D) It is about a thousand times more massive than Earth.
E) It is about a thousand times more massive than all the planets combined. -
ANSWER E) It is about a thousand times more massive than all the planets
combined.
, Which of the following lists the planets of our solar system in the correct
order from closest to farthest from the Sun?
A) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
B) Mercury, Venus, Mars, Earth, Saturn, Jupiter, Neptune, Uranus
C) Mercury, Earth, Venus, Mars, Jupiter, Saturn, Neptune, Uranus
D) Earth, Mars, Mercury, Venus, Jupiter, Saturn, Uranus, Neptune - ANSWER
A) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Based on our theory of how our own solar system formed, we would expect
that other solar systems would be quite common.
TRUE or FALSE? - ANSWER True
Which of the following did not occur during the collapse of the solar nebula?
A) heating up
B) concentrating denser materials nearer the Sun
C) spinning faster - ANSWER B) concentrating denser materials nearer the
Sun
In essence, the nebular theory holds that _________.
A) our solar system formed from the collapse of an interstellar cloud of gas
and dust
B) nebulae are clouds of gas and dust in space
C) the nebular theory is a discarded idea that imagined planets forming as a
result of a near-collision between our Sun and another star
