A high luminosity star - Study guides, Class notes & Summaries

astro 1-exam 3 questions and answers 100% pass what is the sun comprised of? - ANSWER -73% hydrogen 25% helium why is the sun stable? - ANSWER -outward force of gas pressure; inward force of gravity Where does the gas pressure in the sun come from? - ANSWER -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? - ANSWER -diameter-109x; mass-333,000; luminosity- 4 x 10^24 ...

Astro 7N Final Exam Questions and Correct Answers Latest Update 2025 Already Passed the sun is composed mostly of - Answers gas - hydrogen (73%) - helium (25%) the sun is stable due to balance of - Answers - gravity (inward force) - gas pressure in hot interior (outward force) what is the temperature of the gas pressure nuclear fusion reactions in the sun's core - Answers 15 million degrees kelvin diameter and mass of the sun - Answers diameter: 109 x Earth's mass: 333,000 x Earth...

Apparent and Absolute Magnitude Test Questions and Answers Absolute Magnitude cont... more - Answer-Stars more than 32.6 LY away appear dimmer than they are High apparent magnitude and low absolute magnitude If a star is 32.6 LY away, its absolute and apparent magnitudes will be the same. Hertzsprung-Russell (H-R) Diagram - Answer-Shows relationships between absolute magnitude and temperature of stars. Can also show the relationship between temperature and luminosity As temperature incre...

Chapter 10 Questions and Answers 2024 The star Bernard's Star has an apparent magnitude of 9.5 and the star Lelande 21185 has an apparent magnitude of 7.5. Which one is brighter? By how many times? Lelande 21185 is the brighter star as the more negative the magnitude is, the brighter the object is. Subtract the two magnitudes and take the absolute value to get a positive answer. Then use that answer as the power on 2.512. |9.5-(+7.5)| =2| =2| 2.5 ^2 = 6.25 Therefore Lelande 21185 is about ...

To find the most accurate distance to a nearby star using parallax, astronomers could compare the view of the star against the background stars at what times of the year? - In January and July Which of the following correctly expresses the distance to a nearby star? - 1.3 parsecs Consider two stars (Y and Z) that both exhibit parallax. Star Z appears to move back and forth against the background stars by a greater amount than Y. Which star is farther away from Earth? - Star Y A star has a p...

Astro 7N Exam 2 Questions and Answers Latest Update 2025 Already Passed A high luminosity star - Answers Emits more light than a low-luminosity star If a red giant appears the same brightness as a red main sequence star, which one is farther away? - Answers The red giant The heaviest nuclei of all are formed... - Answers During a supernova explosion Hydrogen-2 + proton = ____ + energy: - Answers Helium-3 Which of the following has the smallest radius? - Answers Neutron star Why does the m...

Astro 7N Exam 2 Questions with 100% Correct Answers | Verified | Latest Update 2024

Astro 7N EXAM QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED ANSWERS) |ALREADY GRADED A+ 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 - Answers - emits more light than a low-luminosity star If a red giant...

Astronomy 102 Final Exam | 100% Correct Answers | Verified | Latest 2024 Version To find the most accurate distance to a nearby star using parallax, astronomers could compare the view of the star against the background stars at what times of the year? - In January and July Which of the following correctly expresses the distance to a nearby star? - 1.3 parsecs Consider two stars (Y and Z) that both exhibit parallax. Star Z appears to move back and forth against the background stars by a...

Astro 7n Exam 2 |2024 UPDATE |REAL EXAM QUESTIONS AND VERIFIED ANSWERS/ACCURATE SOLUTIONS |GET IT 100% CORRECT!! ALREADY GRADED A+ Practice questions for this set Terms in this set (102) Learn 1 / 7 Study with Learn balance of gravity (inward force) and gas pressure in its hot interior (outward force) Choose matching term 1 if a star begins with about 8-40 solar masses (fate of stars) 2 what makes the sun stable? 3 H-R diagram vertical axis 4 A 2-solar-mass main sequence star is at...