ASTRO1 UCSB FINAL NEW UPDATE 2025 WITH
ACTUAL QUESTIONS AND ANSWERS VERIFIED
CORRECT
A THEORY is a pattern in nature thought to have predictive power. The test of a theory is a
prediction. That's where pseudo-science fails. T/F - CORRECT ANSWER-T
Red giant stars are powered by hydrogen burning in a shell surrounding a core, which has been
depleted of hydrogen. T/F - CORRECT ANSWER-T
Jovian planets have densities similar to that of water, and we know in fact that they are mostly
made of water. T/F - CORRECT ANSWER-F - Jovian planets are gaseous
The Sun appears to circle the Celestial Sphere in one year because the Earth is circling the Sun.
The Sun's apparent path is called the horizon. T/F - CORRECT ANSWER-F - it's called the ecliptic
A planet can occasionally act as a circumpolar star as seen from Santa Barbara. T/F - CORRECT
ANSWER-F
Opaque bodies approximately obey the blackbody laws: the Stefan-Boltzmann Law and Wien's
Law. T/F - CORRECT ANSWER-T
Venus's surface is very hot because it absorbs more sunlight than the earth does. T/F - CORRECT
ANSWER-B - its thick atmosphere keeps heat from escaping
, Ozone depletion may have stabilized because of an international agreement to reduce emission
of certain industrial chemicals called chlorofluorocarbons. T/F - CORRECT ANSWER-T
Under exotic conditions, intuition sometimes fails, e.g. speed of light is the same for all
observers. T/F - CORRECT ANSWER-T
Planetary orbits are circles with the Sun in the center. T/F - CORRECT ANSWER-F
The Cosmic Microwave Background has a blackbody spectrum. T/F - CORRECT ANSWER-T
Old streambeds and other topographic features indicate that Mars once had liquid water on its
surface. T/F - CORRECT ANSWER-T
A good example of a positive feedback effect in global warming is that melting sea ice causes a
decrease in the Earth's albedo, meaning we absorb more sunlight than ever. T/F - CORRECT
ANSWER-T
While the heavy elements have been cooked-up in stars, several of the light elements and
isotopes were made in the first few minutes of the Big Bang. T/F - CORRECT ANSWER-T
The fact that virtually all galaxies are receding from us implies that - CORRECT ANSWER-the
Universe is expanding
The final stage in the evolution of a low-mass star is a - CORRECT ANSWER-white dwarf
ACTUAL QUESTIONS AND ANSWERS VERIFIED
CORRECT
A THEORY is a pattern in nature thought to have predictive power. The test of a theory is a
prediction. That's where pseudo-science fails. T/F - CORRECT ANSWER-T
Red giant stars are powered by hydrogen burning in a shell surrounding a core, which has been
depleted of hydrogen. T/F - CORRECT ANSWER-T
Jovian planets have densities similar to that of water, and we know in fact that they are mostly
made of water. T/F - CORRECT ANSWER-F - Jovian planets are gaseous
The Sun appears to circle the Celestial Sphere in one year because the Earth is circling the Sun.
The Sun's apparent path is called the horizon. T/F - CORRECT ANSWER-F - it's called the ecliptic
A planet can occasionally act as a circumpolar star as seen from Santa Barbara. T/F - CORRECT
ANSWER-F
Opaque bodies approximately obey the blackbody laws: the Stefan-Boltzmann Law and Wien's
Law. T/F - CORRECT ANSWER-T
Venus's surface is very hot because it absorbs more sunlight than the earth does. T/F - CORRECT
ANSWER-B - its thick atmosphere keeps heat from escaping
, Ozone depletion may have stabilized because of an international agreement to reduce emission
of certain industrial chemicals called chlorofluorocarbons. T/F - CORRECT ANSWER-T
Under exotic conditions, intuition sometimes fails, e.g. speed of light is the same for all
observers. T/F - CORRECT ANSWER-T
Planetary orbits are circles with the Sun in the center. T/F - CORRECT ANSWER-F
The Cosmic Microwave Background has a blackbody spectrum. T/F - CORRECT ANSWER-T
Old streambeds and other topographic features indicate that Mars once had liquid water on its
surface. T/F - CORRECT ANSWER-T
A good example of a positive feedback effect in global warming is that melting sea ice causes a
decrease in the Earth's albedo, meaning we absorb more sunlight than ever. T/F - CORRECT
ANSWER-T
While the heavy elements have been cooked-up in stars, several of the light elements and
isotopes were made in the first few minutes of the Big Bang. T/F - CORRECT ANSWER-T
The fact that virtually all galaxies are receding from us implies that - CORRECT ANSWER-the
Universe is expanding
The final stage in the evolution of a low-mass star is a - CORRECT ANSWER-white dwarf
