Astro 1 Study guides, Class notes & Summaries

Astro 1 Exam 1 PSU Real exam questions and answers latest update

ASTRO 1 FINAL EXAM PSU 2024 QUESTIONS AND ANSWERS

If a planet is seeing its moon in the new phase right now, in what phase would the planet appear to be when viewed from its moon? - full planet What is the reason for the seasons on earth - earth is tilted with respect to the sun by about 23.5 degrees As compared to a cool star a hotter star emits - shorter wavelength, higher frequency, bluer color at approximately what time does the third quarter moon rise - midnight the electrons in a cloud of hydrogen gas are making the transition from ...

Astro 102 Final Exam Ultimate Study Guide | 100% Correct Answers | Verified | Latest 2024 Version

Astro 102 Final Sets Questions With 100% Correct Answers | Latest Update What is the main reason that astronomers have devoted many years of effort to determining the rotation curve for the Milky Way galaxy - ANSWER : The rotation curve can be used to help us determine the distribution of the mass in the galaxy How does the diameter of the disk of the Milky Way compare to its thickness? - ANSWER : The diameter is about 100 times greater than its thickness The most common form...

Why do we see the Moon appear to go through phases as seen from Earth? A. The Moon reflects "Earthshine", so it depends on how much light from the Earth is hitting the Moon B. As the Moon rotates, it presents a different phase to us over the course of its "day". C. Depending on where the Moon is along its orbit, we see different amounts of its illuminated side D. The Earth's shadow blocks out part of the Moon from time to time - C. Depending on where the Moon is along its orbit, we see...

Astro 1 Final (Penn State) Real exam questions and answers latest update

what is the sun comprised of? - 73% hydrogen 25% helium why is the sun stable? - outward force of gas pressure; inward force of gravity Where does the gas pressure in the sun come from? - nuclear fusion reactions in the core at temperatures of 15 million degrees What is the diameter of the sun compared to earth? mass? luminosity (compared to 100W lightbulbs? - diameter-109x; mass-333,000; luminosity- 4 x 10^24 What percent of mass in the solar system comes from the sun? - 99.9% how long h...

ASTRO 1 PSU- FINAL EXAM #4 QUESTIONS AND ANSWERS COMPLETE.

Astro 1 PSU Exam QUESTIONS WITH COMPLETE SOLUTIONS Which is the smallest object? - CORRECT ANSWER -A neutron star A galaxy has an H-alpha emission line observed at a wavelength 10 percent larger than the rest wavelength of H-alpha. What is the redshift of the galaxy? - CORRECT ANSWER -0.1 What is in this image? - CORRECT ANSWER -Supernova remnant Which is the most luminous? - CORRECT ANSWER -Quasar Which contains the most stars? - CORRECT AN...