BYU GEOL 109 EXAM 2026
COMPREHENSIVE STUDY GUIDE WITH
VERIFIED SOLUTIONS
◉The banding of Jupiter's atmosphere is probably related to which
of the following?
A. Jupiter's atmosphere shows no banding.
B. Reflection of the surface features.
C. Turbulent winds in the atmosphere of this rapidly spinning
planet.
D. The composition of the atmosphere. Answer: C. Turbulent winds
in the atmosphere of this rapidly spinning planet.
◉Jupiter is composed mainly of ____________.
A. hydrogen, lithium, and sodium
B. rocky silicate materials
C. water ice
D. hydrogen and helium Answer: D. hydrogen and helium
,◉Why is Jupiter so much larger than all of the terrestrial planets
combined?
A. It radiates a significant amount of energy like the Sun.
B. It formed in the outer solar system where water ice was stable.
C. It has low density.
D. It has a large gravitational attraction. Answer: B. It formed in the
outer solar system where water ice was stable.
◉Where does Jupiter's large magnetic field come from?
A. It develops like Earth's field when convection happens in a layer
of molten iron deep inside.
B. All planets that spin have magnetic fields.
C. Convection in a layer of ionized hydrogen may create the magnetic
field.
D. It is induced by the orbital motions of its moons and the ring
system. Answer: C. Convection in a layer of ionized hydrogen may
create the magnetic field.
◉What are some important characteristics of the atmosphere of
Jupiter? (Select all that apply.)
A. Jupiter's atmosphere formed by outgassing of solids in its interior.
,B. The clouds are made of ices of ammonia (NH3) and water.
C. The main gases in the atmosphere are ammonia and methane
D. Jupiter's atmosphere formed by trapping nebula gas on to a large
icy core.
E. It is poor in carbon dioxide, unlike Mars. Answer: B. The clouds
are made of ices of ammonia (NH3) and water.
D. Jupiter's atmosphere formed by trapping nebula gas on to a large
icy core.
E. It is poor in carbon dioxide, unlike Mars.
◉This diagram shows the layered structure of Jupiter. Click on the
zone that consists of metallic hydrogen.
(IMAGE)
A. Outer
B. Middle inner
C. Lower inner
D. Core Answer: B. Middle inner
◉How are the rings of Jupiter related to the small moons Adrastea
and Metis?
, A. The magnetic fields of tiny Adrastea and Metis shepherd small
chunks of ice into a narrow ring.
B. Collisions at the surface of these bodies may send showers of
small particles spiraling inward to Jupiter.
C. Geysers of liquid water spew from the surface, freeze into droplets
of ice, and go in orbit around Jupiter. Answer: B. Collisions at the
surface of these bodies may send showers of small particles
spiraling inward to Jupiter.
◉In what way is Io similar to Earth's Moon? (Select all that apply.)
A. They are about the same size.
B. They have about the same density.
C. Both are tidally locked with one face pointed toward their host
planet.
D. Both have heavily cratered surfaces.
E. Both have active volcanoes. Answer: A. They are about the same
size.
B. They have about the same density.
C. Both are tidally locked with one face pointed toward their host
planet.
◉The surface of Io is thought to be less than a million years old
because ________________.
COMPREHENSIVE STUDY GUIDE WITH
VERIFIED SOLUTIONS
◉The banding of Jupiter's atmosphere is probably related to which
of the following?
A. Jupiter's atmosphere shows no banding.
B. Reflection of the surface features.
C. Turbulent winds in the atmosphere of this rapidly spinning
planet.
D. The composition of the atmosphere. Answer: C. Turbulent winds
in the atmosphere of this rapidly spinning planet.
◉Jupiter is composed mainly of ____________.
A. hydrogen, lithium, and sodium
B. rocky silicate materials
C. water ice
D. hydrogen and helium Answer: D. hydrogen and helium
,◉Why is Jupiter so much larger than all of the terrestrial planets
combined?
A. It radiates a significant amount of energy like the Sun.
B. It formed in the outer solar system where water ice was stable.
C. It has low density.
D. It has a large gravitational attraction. Answer: B. It formed in the
outer solar system where water ice was stable.
◉Where does Jupiter's large magnetic field come from?
A. It develops like Earth's field when convection happens in a layer
of molten iron deep inside.
B. All planets that spin have magnetic fields.
C. Convection in a layer of ionized hydrogen may create the magnetic
field.
D. It is induced by the orbital motions of its moons and the ring
system. Answer: C. Convection in a layer of ionized hydrogen may
create the magnetic field.
◉What are some important characteristics of the atmosphere of
Jupiter? (Select all that apply.)
A. Jupiter's atmosphere formed by outgassing of solids in its interior.
,B. The clouds are made of ices of ammonia (NH3) and water.
C. The main gases in the atmosphere are ammonia and methane
D. Jupiter's atmosphere formed by trapping nebula gas on to a large
icy core.
E. It is poor in carbon dioxide, unlike Mars. Answer: B. The clouds
are made of ices of ammonia (NH3) and water.
D. Jupiter's atmosphere formed by trapping nebula gas on to a large
icy core.
E. It is poor in carbon dioxide, unlike Mars.
◉This diagram shows the layered structure of Jupiter. Click on the
zone that consists of metallic hydrogen.
(IMAGE)
A. Outer
B. Middle inner
C. Lower inner
D. Core Answer: B. Middle inner
◉How are the rings of Jupiter related to the small moons Adrastea
and Metis?
, A. The magnetic fields of tiny Adrastea and Metis shepherd small
chunks of ice into a narrow ring.
B. Collisions at the surface of these bodies may send showers of
small particles spiraling inward to Jupiter.
C. Geysers of liquid water spew from the surface, freeze into droplets
of ice, and go in orbit around Jupiter. Answer: B. Collisions at the
surface of these bodies may send showers of small particles
spiraling inward to Jupiter.
◉In what way is Io similar to Earth's Moon? (Select all that apply.)
A. They are about the same size.
B. They have about the same density.
C. Both are tidally locked with one face pointed toward their host
planet.
D. Both have heavily cratered surfaces.
E. Both have active volcanoes. Answer: A. They are about the same
size.
B. They have about the same density.
C. Both are tidally locked with one face pointed toward their host
planet.
◉The surface of Io is thought to be less than a million years old
because ________________.
