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PSU Astro 7N Exam 2 Questions With Answers 100% Correct!!
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PSU Astro 7N Exam 2 Questions With Answers 100% Correct!!
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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
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