Milky way - Study guides, Revision notes & Summaries

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...

___________ forces caused the gas in the thin disk to fragment into clouds or clumps with masses like those of star clusters - ️️gravitational ____________ black hole: a black hole whose mass exceeds 1000 solar mass - ️️supermassive ___________________ is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other - ️️friction (In the absence of a strong magnetic field), what is the chief factor that determines what typ...

Using the ideas discussed in the text, in what sense are we "star stuff"? - Nearly every atom from which we are made was once inside of a star When did humans learn that the Earth is not the center of the universe? - Within the past 500 years How are galaxies important to our existence? - Galaxies recycle material from one generation of stars to the next, and without this recycling we could not exist. If we imagine the history of the universe compressed into one year, dinosaurs walked...

NRNP 6675-15; NRNP 6675 Week 6 Midterm Exam 2024/25 100% solved -Graded A+ NRNP 6675 Midterm Exam (Latest-2024/2025, 100 Q & A) / NRNP 6675N Midterm Exam / NRNP6675 Midterm Exam / NRNP-6675N Midterm Exam: Walden University | 100% Verified Q & A | Which of the following are risk factors for neuroleptic malignant syndrome? Select all that apply Age Rapid dose escalation Parental route of administration Higher potency typical antipsychotics 2. Antipsychotic medications provide D2 blockade in the ...

SETI Correct Answer-Search for Extraterrestrial Intelligence What does ETI need? Correct Answer-1. A platform 2. Stability 3. Emergence, persistence and gradual evolution 4. Be communicative Water's special properties Correct Answer-Contracts at lower temperatures, high heat capacity, important for chemical reactions How many stars in the Milky Way could be suitable for ETI? Correct Answer-At least a few billion Habitable zone Correct Answer-area around a star that life can exist...

Astronomy Final Exam Study Guide Questions And Answers 100% Solved The way scientists know that a hypothesis is a reasonable description of nature is to... ️️Do experiments and observations about predictions of the hypothesis A lightyear is.... ️️The distance that light travels in one year A star is 230 light years away. the light we see tonight from that star left it.... ️️230 years ago The Star that provides energy for the Earth is..... ️️The Sun The location of the ...

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...

Gravity is an ________ force between two objects with mass, acting along the line between them. - correct answer attractive How many stars are in the Milky Way galaxy? - correct answer 200 billion Newton's first law of motion says that an object at constant velocity will remain at constant velocity unless acted upon by a - correct answer force In his General Theory of Relativity, Einstein revised our understanding of - correct answer gravity Early astronomers believed the earth was ...

What is a light year? Answer distance that light travels in 1 year 2. What is the closest star to Earth besides the Sun? (4.2 ly away) Answer proximacentauri 3. What is the age of the universe? Answer 14 billion years 4. What is our cosmic address?What is the Local Group? Answer Earth, solar system,milky way galaxy, local group, local supercluster 5. Order of planets in our solar system

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...