SUS1501 ASSIGNMENTS 2-8 2026
COMPREHENSIVE REVIEW AND ANSWERS
◉ About what fraction of the exoplanets discovered by Kepler are in
multiple planet systems? Answer: 1/2
◉ Use the table to help you rank the elements from most common
(top) to least common (bottom) in the Solar System. Answer:
Hydrogen
Helium
Oxygen
Carbon
Iron
◉ Compared to our Solar System, other planetary systems often
show ____. Answer: alternating sizes of planets
closer spacing of orbits
◉ Put the steps for the beginning of the formation of the Solar
System in order from the first (top) to the last (bottom). Answer: A
gas cloud begins to contract from its own gravity
The gas cloud flattens and spins faster, becoming the solar nebula
, The sun begins to form, heating the solar nebula
Temperatures reach hundreds of Kelvins in the inner disk and only
tens of Kelvins in the outer disk
◉ Which measurements provide the best information about an
exoplanet's composition? Answer: Planetary radius
Planetary mass
Stellar spectrum
◉ One type of observation astronomers have made that supports the
solar nebula theory is of ____ Answer: gas and dust disks in the Orion
nebula
◉ What observations must be predicted by our model of the
formation of the Solar System? Answer: The orbits of the planets are
all approximately in the same plane.
The planets orbit the Sun in the same direction.
Rocky planets are closer to the Sun, gaseous and icy ones farther out.
COMPREHENSIVE REVIEW AND ANSWERS
◉ About what fraction of the exoplanets discovered by Kepler are in
multiple planet systems? Answer: 1/2
◉ Use the table to help you rank the elements from most common
(top) to least common (bottom) in the Solar System. Answer:
Hydrogen
Helium
Oxygen
Carbon
Iron
◉ Compared to our Solar System, other planetary systems often
show ____. Answer: alternating sizes of planets
closer spacing of orbits
◉ Put the steps for the beginning of the formation of the Solar
System in order from the first (top) to the last (bottom). Answer: A
gas cloud begins to contract from its own gravity
The gas cloud flattens and spins faster, becoming the solar nebula
, The sun begins to form, heating the solar nebula
Temperatures reach hundreds of Kelvins in the inner disk and only
tens of Kelvins in the outer disk
◉ Which measurements provide the best information about an
exoplanet's composition? Answer: Planetary radius
Planetary mass
Stellar spectrum
◉ One type of observation astronomers have made that supports the
solar nebula theory is of ____ Answer: gas and dust disks in the Orion
nebula
◉ What observations must be predicted by our model of the
formation of the Solar System? Answer: The orbits of the planets are
all approximately in the same plane.
The planets orbit the Sun in the same direction.
Rocky planets are closer to the Sun, gaseous and icy ones farther out.
