Exam (elaborations)
PSU Astro 7N Exam 2 Questions With Answers 100% Correct!!
- Course
- Institution
PSU Astro 7N Exam 2 Questions With Answers 100% Correct!!
[Show more]
Content preview
Name: Score:115 Multiple choice questions
Term 1 of 115
Disk
Central part of sun
High density and temperature
Nuclear reactions occur here
Gamma rays are produced here
Component of the Milky Way
100K lightyears in diameter
Spiral pattern
Blue stars dominate this region
Large spherical region around the whole galaxy
Contains old stars
Globular clusters exist here
A sort of "anti-gravity" causing the acceleration o the universe
Comprises about 71% of the overall density of the Universe
Definition 2 of 115
The shifting of the lines in the spectrum of an object to longer wavelengths, due to its motion
away from the observer
Redshift
Luminosity
Brightness
Blueshift
,Definition 3 of 115
A sort of "anti-gravity" causing the acceleration o the universe
Comprises about 71% of the overall density of the Universe
Dark Matter
Dark Energy
Deuterium
Brown Dwarfs
Term 4 of 115
Stellar Nursery (Molecular Clouds)
Hundreds of thousands/millions of stars
Tend to be more yellow in color with many red giants
Have more gas, dust, and star formation than other kinds of galaxies
Noticeable disks
Outer layer of sun
Low density
Only visible during solar eclipses
Huge clouds of cool gas and dust
New stars form here
Dominated by pink tones
,Definition 5 of 115
E5 Galaxy
Planetary Nebula
S0 Galaxy
Sa Galaxy
Term 6 of 115
Flare
The rate of formation of habitable stars in the galaxy
An eruption coming out of the sun due to magnetic activity
Ejected envelope (the layers of the core) of a low to intermediate mass star
The mass of the sun
, Definition 7 of 115
When a low-mass star runs out of core nuclear fuel
Blows off outer layers in a pulsating/layer look
Often Symmetric
White dwarf is left in the center
Spiral Galaxy
Supernova Remnants
Irregular Galaxy
Planetary Nebulae
Definition 8 of 115
Quarks form
Quarks bind together into protons and neutrons
P/N bind together to form helium nuclei (nucleosynthesis); universe is still opaque
Electrons join with nuclei to form complete atoms; universe is transparent
Stars and galaxies form
First large stars die and spread heavier elements
Quasars form
History and Mythology
History of the Universe
Fundamental Particles
How the World was Made
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller americandocuments. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
74735 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now