White dwarf star - Study guides, Class notes & Summaries

A charming friend of yours who has been reading a little bit about astronomy accompanies you to the campus observatory and asks to see the kind of star that our Sun will ultimately become, long, long after it has turned into a white dwarf. Why is the astronomer on duty going to have a bit of a problem satisfying her request? - ️️after a white dwarf cools off it becomes too cold and dark to emit visible light A group of graduate students, bored during a cloudy night at the observatory, begin...

Astronomy Unit 8 Practice Exam Questions & Answers. Ranking Task: The Size of Planets, Stars, and Stellar Remnants Part A: Listed following are several astronomical objects. Rank these objects based on their diameter, from largest to smallest. (Note that the neutron star and black hole in this example have the same mass to make your comparison easier, but we generally expect black holes to have greater masses than neutron stars.) - CORRECT ANSWER -main-sequence star of a spectral type A -...

about 91% (by number) of the atoms in the sun are the element - ️️hydrogen Age of the Universe - ️️13.7 billion years all the energy of the sun is generated in the - ️️core alpha particle - ️️A cluster of 2 protons and 2 neutrons emitted from a nucleus in one type of radioactivity an astronomer discovers a new star and wants to measure its temperate. she could do this by: - ️️take a spectrum of the star and determine the spectral type Astronomers did star counts in all d...

(In the absence of a strong magnetic field), what is the chief factor that determines what type of electromagnetic radiation objects give off: - ️️their temperature A college friend of yours who has been postponing taking any science courses hears you talking about the generation of nuclear energy in the Sun and makes the following observation: "The whole idea of the atomic nucleus is pretty ridiculous. If an oxygen nucleus consists of eight protons and eight neutrons, the charge on that n...

Space Exploration|Complete Questions with A+ Graded Answers main sequence a diagonal area on an H-R diagram that includes more than 90 percent of all stars white dwarf A small, hot, dim star that is the leftover center of an old star Luminosity the true brightness of an object light year the distance light travels in one year blueshifted the doppler shift toward shorter wavelengths of light from an approaching object Redshifted stars moving away from Earth Ne...

2023 AQA A-level PHYSICS 7408/3BA Paper 3 Section B Astrophysics Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] A-level PHYSICS Paper 3 Section B Astrophysics Thursday 15 June 2023 Morning Time allowed: The total time for Materials both sections of this paper is For this paper you must have: 2 hours. You are advised to • a pencil and a ruler spend approximately • a scientific calculator 50 minutes on this section. • a Data and Formulae Booklet • a protractor. In...

What are the characteristics of disk stars (yellow) of the Milky Way Galaxy? - High mass stars, the Sun, youngest stars, and stars that all orbit in nearly the same plane What are the characteristics of halo stars (green) of the Milky Way Galaxy? - Globular clusters, oldest stars, stars whose orbits can be inclined at any angle, and stars with smallest abundance of heavy elements. What are the characteristics of spiral galaxies? - They contain abundant clouds of cool gas and dust, are rare...

Explain how a white dwarf's observable properties (specifically Luminosity & Temp) change over billions of years if it is left alone, and show how its location would change on an H-R diagram. - •White Dwarfs are low-mass stars, and if they are left alone, they will fade and cool forever. •If mass transfer adds mass to a White Dwarf, it can become, (1) a Nova, or (2) a Supernova Compared to a white dwarf, a neutron star's density is? - •Not all neutron stars are called pulsars becaus...

Astro 7n Exam 2 Questions And Revised Correct Answers Already Passed 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 furth...

NST1502 Assignment 4 PORTFOLIO (ANSWERS) 2023 (791148).100% CORRECT questions, answers, workings and explanations..... SECTION A Have you ever wondered how traditional healers discover their medicines? And how about western medical doctors? How do they discover their medicines? Do a bit of research and write a two-page report on how traditional healers and western medical doctors discover their medicines. Pay particular attention to the PROCESS they follow in order to discover new medicines.. In...