Astro 2 - Study guides, Class notes & Summaries

PSU Astro 7N Exam 2 Questions With Answers 100% Correct!!

Astro 7n Exam 1 Questions with 100%Correct Answers 2024. 1. What two properties of a planet affect the gravity we feel on its surface? A: radius and distance from the Sun B: radius and temperature C: mass and distance from the Sun D: mass and radius E: mass and temperature 2. Two planets have the same radius. If Planet A is 5 times more massive than Planet B, how does gravity differ on the surfaces of the two planets? A: gravity is 5 times stronger on Planet B B: gravity is 5 times...

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A high-luminosity star... A. is always at a larger distance than a low-luminosity star B. emits more light than a low-luminosity star C. is always redder than a star with a lower luminosity D. is at a lower temperature than a low-luminosity star E. is always at a smaller distance than a low-luminosity star Answer - B If a red giant appears the same brightness as a red main sequence star, which one is further away? A. the red giant B. we cannot tell C. it depends on the phase o...

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ASTRO 207 Midterm 2 Exam - Questions with 100% Correct Answers How much electrical charge does an atom with 6 protons, 6 neutrons, and 5 electrons have? A) a positive charge of +1 B) a total charge of +17 C) a positive charge of +7 D) a negative charge of -5 E) none of the above Suppose the angular separation of two stars is smaller than the angular resolution of your eyes. How will the stars appear to your eyes? A) you will not be able to see these two stars at all B) you will see two distinc...

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ASTRO 207 Midterm 1 Exam - Questions with Verified Answers The amount of time between successive passes of any given star across the meridian is: A) 365.25 days B) 12 years C) 23 hours, 56 minutes D) 26,000 years E) 24 hours When someone on Earth observes the Moon in the first-quarter phase, someone on the Moon facing Earth observes Earth in the: A) new Earth phase B) crescent Earth phase C) third-quarter Earth phase D) full Earth phase E) first-quarter Earth phase What is a circumpolar star? ...

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What is the order of the planets with distance from the Sun? - Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Which planet has the highest surface temperature? - Venus Which planet has the largest mass? - Jupiter Which planet has the largest tilt of its spin axis? - Uranus Which planet has the largest temperature variations? - Mercury Which planet rotates backwards? - Venus Which planet has polar ice caps? - Mars How many moons does Mercury have? - 0 How many moons d...