ASTRO 7N EXAM 2 ACTUAL EXAM PAPER 2026
QUESTIONS WITH SOLUTIONS
◉ Which of the following do several contributors in your reading
articles suggest is a good model of an intelligent "alien" species
already living on Earth? Answer: octopus
◉ Why does the main sequence part of a star's life end? Answer: The
Hydrogen in the core is exhausted.
◉ The heaviest nuclei of all are formed ... Answer: during a
supernova explosion
◉ The above diagram shows some information from NASA Eyes
about the planet 55 Cancri e. Which of the following is TRUE about
that planet? Answer: A year on that planet is less than a day on
Earth.
◉ In what box does the galaxy in the bottom center belong in this
Hubble tuning fork diagram? Answer: SBc
◉ What is a core development that expert Kevin Anderson thought
all intelligent life would have? Answer: A protective mechanism for
the brain.
, ◉ The top star has Luminosity 400 and the bottom star Luminosity
25. At what distance would the top star appear as faint as the bottom
star? Answer: Distance = 1
◉ In the figure above, how would you calculate the fraction of the
mass of the gas in the universe that is in the form of Hydrogen?
Answer: take 16x1 for the mass of Hydrogen and divide by
16x1+4x4 for the total mass
◉ What is the name for colors opposite each other (180 degrees
apart) on the color wheel? Answer: complementary colors
◉ How do astronomers measure the temperature of stars? Answer:
By looking at which absorption lines are present in the star's
spectrum
◉ The above image shows a parallax measurement for a nearby star.
What is the distance to that star? Answer: 1 parsec
◉ How many neutrons are there in helium-4? Answer: 2
◉ Which step or steps has/have a form of hydrogen as a product?
Answer: The step where two protons combine only
QUESTIONS WITH SOLUTIONS
◉ Which of the following do several contributors in your reading
articles suggest is a good model of an intelligent "alien" species
already living on Earth? Answer: octopus
◉ Why does the main sequence part of a star's life end? Answer: The
Hydrogen in the core is exhausted.
◉ The heaviest nuclei of all are formed ... Answer: during a
supernova explosion
◉ The above diagram shows some information from NASA Eyes
about the planet 55 Cancri e. Which of the following is TRUE about
that planet? Answer: A year on that planet is less than a day on
Earth.
◉ In what box does the galaxy in the bottom center belong in this
Hubble tuning fork diagram? Answer: SBc
◉ What is a core development that expert Kevin Anderson thought
all intelligent life would have? Answer: A protective mechanism for
the brain.
, ◉ The top star has Luminosity 400 and the bottom star Luminosity
25. At what distance would the top star appear as faint as the bottom
star? Answer: Distance = 1
◉ In the figure above, how would you calculate the fraction of the
mass of the gas in the universe that is in the form of Hydrogen?
Answer: take 16x1 for the mass of Hydrogen and divide by
16x1+4x4 for the total mass
◉ What is the name for colors opposite each other (180 degrees
apart) on the color wheel? Answer: complementary colors
◉ How do astronomers measure the temperature of stars? Answer:
By looking at which absorption lines are present in the star's
spectrum
◉ The above image shows a parallax measurement for a nearby star.
What is the distance to that star? Answer: 1 parsec
◉ How many neutrons are there in helium-4? Answer: 2
◉ Which step or steps has/have a form of hydrogen as a product?
Answer: The step where two protons combine only
