1|Page
ASTRO 7N Final Exam Study Guide 2025 – Complete
Astronomy of the Solar System Review, Practice
Questions, and Key Concepts Explained
ASTRO 7N final exam study guide 2025
ASTRO 7N astronomy final exam review
ASTRO 7N practice test with answers
astronomy of the solar system final exam
ASTRO 7N flashcards and notes
college astronomy final exam prep
how to pass ASTRO 7N final exam
ASTRO 7N study guide PDF download
astronomy exam questions and answers
ASTRO 7N review sheet
How tiny a spot is the hubble deep field? - ANSWER-The size of President Roosevelt's eye on a dime
held at arm's length
Among these choices, what is the last thing that happens in the history of the universe? - ANSWER-
electrons join with nuclei to make atoms
If a galaxy had no dark matter, we would observe - ANSWER-the rotation velocity would decrease with
increasing distance like the Keplerian curve in our solar system
How many times bigger is the local group of galaxies in which the milky way resides than the milky
way itself - ANSWER-about 100 times bigger
Which one of the following is false? - ANSWER-galaxy collisions destroy most of the stars in the
galaxies involved
, 2|Page
If a galaxy is moving away from us the wavelength of the light it emits will be - ANSWER-increased
The stars in the halo of our milky way galaxy are - ANSWER-older and redder than those in the disk
The supermassive black hold in the center of the milky way has a mass of - ANSWER-4 million solar
masses
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 helium? - ANSWER-take 4x4 for the mass of helium, and divide 4x4 + 48x1 for the total
mass
Which force has the photon as its boson - ANSWER-electromagnetic
Which mysterious phenomena do scientists attribute to dark energy - ANSWER-the increasing rate of
expansion of the universe
In the p-p chain, shown in the above diagram, what particles must be input in order to produce one 4HE
nucleus? - ANSWER-6 protons, but 2 of them are returned when the 4 HE is produced
What is the name of the slightly cooler layer of the sun just outside the photosphere - ANSWER-
chromosphere
How does a star move on the H-R diagram during the period of time it is converting hydrogen to helium
in its core - ANSWER-it remains nearly fixed at a certain point on the main sequence and does not move
on the H-R diagram
If the entire mass of earth were concentrated in a region the size of a marble, the resulting object would
be - ANSWER-a black hole
What is the smallest object - ANSWER-a neutron star
ASTRO 7N Final Exam Study Guide 2025 – Complete
Astronomy of the Solar System Review, Practice
Questions, and Key Concepts Explained
ASTRO 7N final exam study guide 2025
ASTRO 7N astronomy final exam review
ASTRO 7N practice test with answers
astronomy of the solar system final exam
ASTRO 7N flashcards and notes
college astronomy final exam prep
how to pass ASTRO 7N final exam
ASTRO 7N study guide PDF download
astronomy exam questions and answers
ASTRO 7N review sheet
How tiny a spot is the hubble deep field? - ANSWER-The size of President Roosevelt's eye on a dime
held at arm's length
Among these choices, what is the last thing that happens in the history of the universe? - ANSWER-
electrons join with nuclei to make atoms
If a galaxy had no dark matter, we would observe - ANSWER-the rotation velocity would decrease with
increasing distance like the Keplerian curve in our solar system
How many times bigger is the local group of galaxies in which the milky way resides than the milky
way itself - ANSWER-about 100 times bigger
Which one of the following is false? - ANSWER-galaxy collisions destroy most of the stars in the
galaxies involved
, 2|Page
If a galaxy is moving away from us the wavelength of the light it emits will be - ANSWER-increased
The stars in the halo of our milky way galaxy are - ANSWER-older and redder than those in the disk
The supermassive black hold in the center of the milky way has a mass of - ANSWER-4 million solar
masses
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 helium? - ANSWER-take 4x4 for the mass of helium, and divide 4x4 + 48x1 for the total
mass
Which force has the photon as its boson - ANSWER-electromagnetic
Which mysterious phenomena do scientists attribute to dark energy - ANSWER-the increasing rate of
expansion of the universe
In the p-p chain, shown in the above diagram, what particles must be input in order to produce one 4HE
nucleus? - ANSWER-6 protons, but 2 of them are returned when the 4 HE is produced
What is the name of the slightly cooler layer of the sun just outside the photosphere - ANSWER-
chromosphere
How does a star move on the H-R diagram during the period of time it is converting hydrogen to helium
in its core - ANSWER-it remains nearly fixed at a certain point on the main sequence and does not move
on the H-R diagram
If the entire mass of earth were concentrated in a region the size of a marble, the resulting object would
be - ANSWER-a black hole
What is the smallest object - ANSWER-a neutron star
