Interstellar medium - Study guides, Class notes & Summaries

Why do disk stars bob up and down as they orbit the galaxy? correct answers because the gravity of other disk stars always pulls them toward the disk Which part of the galaxy has gas with the hottest average temperature? correct answers the halo What is the typical percentage (by mass) of elements other than hydrogen and helium in stars that are forming right now in the vicinity of the Sun? correct answers 2% Where are most of the Milky Way's globular clusters found? correct answers in...

Complete Test Bank for Stars and Galaxies, 10th Edition by Michael A. Seeds ; ISBN13: 9781337399944...(Full Chapters included Chapter 1 to 19)...1. Here and Now. 2. A User's Guide to the Sky. 3. Moon Phases and Eclipses. 4. Origins of Modern Astronomy. 5. Gravity. 6. Light and Telescopes. 7. Atoms and Spectra. 8. The Sun. 9. The Family of Stars. 10. The Interstellar Medium. 11. Formation and Structure of Stars. 12. Stellar Evolution. 13. Deaths of Stars. 14. Neutron Stars and Black...

ASTR 102 Exam Questions With All Correct Answers Current Update We have learned that the centre of the milky way contains a very massive black hole. We developed this understanding by: - Answer -Monitoring the orbital motions of many individual stars in the very central parts of the Milky Way If the sun were to be squashed down small enough to become a black hole, then: - Answer -The planets in the solar system would orbit the Sun in unchanged fashion (but would receive no light from it) ...

What makes up the interstellar medium? gas and dust If you were to take a voyage through the entire disk of the Milky Way, what kind of material would you spend most of your time in? Rarefied clouds of atomic hydrogen. How does the interstellar medium obscure our view of most of the galaxy? Hydrogen gas produces so much visible light that the interstellar medium is opaque, blocking our view of anything beyond it. How can we see through the interstellar medium? by observing at wavelength...

Luminosity - The total amount of power a star emits into space that's measured in watts. Apparent Brightness - Amount of starlight that actually reaches Earth HR Diagram - is a graphical tool that astronomers use to classify stars according to their luminosity, spectral type, color, temperature and evolutionary stage. Stars in the stable phase of hydrogen burning lie along the Main Sequence according to their mass. OBAFGKM - Oh Be A Fine Girl Kiss Me Main Sequence - the vast majorit...

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...

We have learned that the centre of the milky way contains a very massive black hole. We developed this understanding by: - Monitoring the orbital motions of many individual stars in the very central parts of the Milky Way If the sun were to be squashed down small enough to become a black hole, then: - The planets in the solar system would orbit the Sun in unchanged fashion (but would receive no light from it) The first stellar mass black hole identified, Cygnus X-1, was found in 1973. The n...

ASTR 102 Quiz Questions | 100% Correct Answers | Verified | Latest 2024 Version We have learned that the centre of the milky way contains a very massive black hole. We developed this understanding by: - Monitoring the orbital motions of many individual stars in the very central parts of the Milky Way If the sun were to be squashed down small enough to become a black hole, then: - The planets in the solar system would orbit the Sun in unchanged fashion (but would receive no light from it)...

all of the following are true. which of these gives evidence that quasars were more common in the early stages of the universe? - ️️they are more common at very great distances approximately how far is the sun from the center of the galaxy? - ️️27,000 light years Based on counting the number of galaxies in a small patch of the sky and multiplying by the number of such patches needed to cover the entire sky, the total number of galaxies in the observable universe is estimated to be appr...

Test Bank for Foundations of Astronomy, 14e 14th Edition by Michael A. Seeds, Dana Backman. Full Chapters test bank included Part 1: Exploring the Sky Chapter 1: Here and Now 1-1 Where Are We? 1-2 When Is Now? 1-3 Why Study Astronomy? Chapter 2: A User's Guide to the Sky 2-1 Stars and Constellations 2-2 The Sky and Celestial Motions 2-3 Sun and Planets 2-4 Astronomical Influences on Earth's Climate Chapter 3: Moon Phases and Eclipses 3-1 The Changeable Moon 3-2 Lunar Eclipses...