AS102 Final Exam- Increasing your Insurance
IQ. Exam Questions and Answers (Verified
Answers) ||ACTUAL EXAM TEST!! Graded A+ |
2026|2027 EXAM UPDATE
Quiz What percent of you was made in the Big Bang?
Ans> 10% (hydrogen)
Quiz The part of the galaxy with the fewest number of stars is
Ans> The Halo
Quiz What is the best way we know how many stars are in the Milky Way?
Ans> We compare the average star's mass to the mass of our Galaxy.
Quiz What is NOT true about Population I stars?
Ans> Only old stars/low-mass stars
Quiz Where is the highest rate of star formation in a spiral galaxy?
Ans> In the spiral arms
Quiz What is the ideal wavelength to study stars in the centre of the galaxy?
Ans> Infrared
Quiz What is the age of the Universe?
,Ans> 13.6 billion years old
Quiz Imagine a galaxy is the size of a grapefruit. How close, on average, is the nearest galaxy?
Ans> 10 feet away
Quiz What are AGNs
Ans> Active Galactic Nuclei
Quiz What are Cepheid Variables?
Ans> Stars that pulsate at a constant rate
Quiz What is the mass of a white dwarf supernova?
Ans> 1.4 Msun
Quiz How can we tell how far away very distant galaxies are
Ans> We measure the redshift of their specturm to determine how fast they're moving away
from us
Quiz Compared to a lower-mass white dwarf, a higher-mass white dwarf generally has
Ans> a smaller radius
Quiz What happens first when the Sun's core runs out of hydrogen?
Ans> The core shrinks and heats up
Quiz In a very massive star, which stage generally lasts the shortest time?
Ans> core silicon fusion
Quiz A gas heated to millions of degrees would produce
Ans> mostly X-rays
, Quiz In the Sun, the energy-level transition from Level 4 to Level 2 of hydrogen produces
photons with a wavelength of 486.1 nm. In a star twice as hot as the Sun, the same transition
would produce
Ans> photons with the same wavelength
Quiz What defining characteristic of an atom determines what element it is?
Ans> The number of protons it has
Quiz The Doppler shift of light from a star depends on how far away the star is
Ans> False
Quiz How far back in time can we see?
Ans> 380,000 years after the Big Bang
Quiz How long is the Planck Era?
Ans> 10^-43 s
Quiz How hot was the Universe 0.0005 seconds after the Big Bang?
Ans> 10^12 Kelvin
Quiz When was the H and He ratio set?
Ans> 5 minutes after the Big Bang
Quiz How hot was the CMB when it was first emitted?
Ans> 3000 Kelvin
Quiz How do we know that the Universe is not infinite?
Ans> We don't see stars (and therefore light) in every direction
IQ. Exam Questions and Answers (Verified
Answers) ||ACTUAL EXAM TEST!! Graded A+ |
2026|2027 EXAM UPDATE
Quiz What percent of you was made in the Big Bang?
Ans> 10% (hydrogen)
Quiz The part of the galaxy with the fewest number of stars is
Ans> The Halo
Quiz What is the best way we know how many stars are in the Milky Way?
Ans> We compare the average star's mass to the mass of our Galaxy.
Quiz What is NOT true about Population I stars?
Ans> Only old stars/low-mass stars
Quiz Where is the highest rate of star formation in a spiral galaxy?
Ans> In the spiral arms
Quiz What is the ideal wavelength to study stars in the centre of the galaxy?
Ans> Infrared
Quiz What is the age of the Universe?
,Ans> 13.6 billion years old
Quiz Imagine a galaxy is the size of a grapefruit. How close, on average, is the nearest galaxy?
Ans> 10 feet away
Quiz What are AGNs
Ans> Active Galactic Nuclei
Quiz What are Cepheid Variables?
Ans> Stars that pulsate at a constant rate
Quiz What is the mass of a white dwarf supernova?
Ans> 1.4 Msun
Quiz How can we tell how far away very distant galaxies are
Ans> We measure the redshift of their specturm to determine how fast they're moving away
from us
Quiz Compared to a lower-mass white dwarf, a higher-mass white dwarf generally has
Ans> a smaller radius
Quiz What happens first when the Sun's core runs out of hydrogen?
Ans> The core shrinks and heats up
Quiz In a very massive star, which stage generally lasts the shortest time?
Ans> core silicon fusion
Quiz A gas heated to millions of degrees would produce
Ans> mostly X-rays
, Quiz In the Sun, the energy-level transition from Level 4 to Level 2 of hydrogen produces
photons with a wavelength of 486.1 nm. In a star twice as hot as the Sun, the same transition
would produce
Ans> photons with the same wavelength
Quiz What defining characteristic of an atom determines what element it is?
Ans> The number of protons it has
Quiz The Doppler shift of light from a star depends on how far away the star is
Ans> False
Quiz How far back in time can we see?
Ans> 380,000 years after the Big Bang
Quiz How long is the Planck Era?
Ans> 10^-43 s
Quiz How hot was the Universe 0.0005 seconds after the Big Bang?
Ans> 10^12 Kelvin
Quiz When was the H and He ratio set?
Ans> 5 minutes after the Big Bang
Quiz How hot was the CMB when it was first emitted?
Ans> 3000 Kelvin
Quiz How do we know that the Universe is not infinite?
Ans> We don't see stars (and therefore light) in every direction
