pg. 1 Astro 1 PSU Final Exam Prep Test Bank Latest 2025 With 430 Exam Practice Questions And Correct Verified Answers/ PSU Astro 1 Exam Prep Questions Bank/ Astronomy
Which object is smallest?
- Earth
- Galaxy
- Moon
- Sun
- Universe
C Why is Venus the hottest planet?
- its close proximity to the Sun
- its strong gravity
- its extreme greenhouse effect
- its sulfuric acid naturally boils
- its volcanic activity
C If ancient astronomers observed a supernova in the year 1000 AD, and if the distance to that supernova was 8000 lightyears away, what year did the supernova actually occur?
A)7000 AD
B)7000 BC
C)9000 AD
D)9000 BC
B 1 / 4
pg. 2 What is the present source of the sun's energy?
A)joining of hydrogen nuclei B)splitting of hydrogen nuclei C)joining of helium nuclei D)splitting of helium nuclei A Is the moon ever up during the day?
A)sometimes B)always C)never D)only during the eclipse A If Earth's axis of rotation were NOT tilted, which of the following would be TRUE?A)The North and South poles would be about the same temperature as the equator year round B)The equator would be completely dark 24 hours a day for the whole year.C)The equator would get 24 hours of constant sunlight for half the year.D)The North and South poles would still be colder than the equator.E)The North and South poles would be warmer than the equator.D Which of the following pieces of information is it NOT possible to get directly from the spectrum of an object?A).its temperature
- its composition
- its shape
- its speed of motion
- its direction of motion
C Our solar system is moving in the Milky Way towards three stars. X is a blue star that Is slightly closer than the other two. Star Y is a red star that is farthest away 2 / 4
pg. 3 from us. Star Z is a yellow star that is halfway between Stars X and Y. Which of these stars, if any, will give off light that appears to be blueshifted?
- Star X
- Star Y
- Star Z
- All three
- None
D Imagine you see illegal weapons testing on Mars from your backyard. Nuclear bombs emit a lot of light at all wavelengths, from radio waves to gamma rays. How long after initial flash would Earth be hit by these dangerous X-Rays and gamma rays?
A)1167 seconds B)8 minutes C)1 second D)100,000 years E)No time at all. Earth is already being hit by these.E The Sun (a low-Mass main sequence star) will eventually form which of the following?
- a white dwarf
- a supernova
- a neutron star
- a blue giant
- a high-mass Main sequence star
A A high-mass Main sequence star will eventually form which of the following?
- a binary star
- a supernova
- a white dwarf 3 / 4
pg. 4
- a planetary nebula
- a low-Mass main sequence star
- a supernova explosion observed by Chinese astronomers around 1000 AD
- the core of our Sun, via nuclear fusion
- high-mass stars that died long ago
- planetary nebulae
- white dwarfs
B where was the iron found in Earth's crust (and in your blood cells) ultimately formed?
C STUDENT: If I am looking at a star's absorption line spectrum and see that it has a lot of lines at the red end of the spectrum, then the star must be a cool star because the red lines are lower energy lines.
Do you disagree or agree?
- Agree
- Disagree because red light has higher energy, not lower.
- Disagree because it is the # of absorption lines, not their color, that correspond
- Disagree because the color of absorption and emission lines has nothing to do
- Omega is hotter
- Zappa is hotter
- both stars are the same temperature
- there is insufficient information to determine this
- / 4
to temperature.
with temperature.D Two stars, Omega and Zappa, have the same Luminosity. Omega has a larger radius. which star is hotter?
B Star Alpha and Beta have same luminosity, but Star Alpha is 5 times farther away.Therefore Star Alpha will appear,