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The surface of the sun is homogenous except for sun spots
False
Sun spots are created by the differential rotation leading to areas isolated by distortions in the magnetic field
True
The sunlight that we see is directly generated by the fusion in the core of the Sun
False
The sun is made up of mostly Hydrogen
True
Fusion releases energy by creating elements with a higher binding energy per nucleon
True
Fusion is the process of combining protons into heavier nuclei, neutrinos, electrons, and
energy
The convection zone is an area where the ________ energy from fusion is absorbed by the inner most boundary and transferred to the outer most boundary by a difference in the temperature of the material
thermal
In the model of the Sun the inner most layer is a relatively inactive region where waste ________ collects displacing fusing hydrogen
helium
Variable stars are stars whose mass varies with time
False
After geometric arguments all means of measuring distances rely on finding the absolute brightness of the object and comparing to the observed brightness.
True
The classification of stars was originally done by temperature
False
If all stars are plotted based on color/temperature and brightness there are no patterns
False
The apparent magnitude of the sun is ~-30
True
A _______ is the distance associated with a parallax angle of 1 arc second and base line of 1 Astronomical Unit
Parsec
A __________ is distance light travels in one year
lightyear
The 21 cm line of hydrogen comes from the interaction between the magnetic fields of the proton and orbiting electron
True
An absorption nebula comes from cold matter emitting light at specific wavelengths
False
As mass increases the timescale of formation shortens
True
We detect many different molecules in gas clouds
True
Though thought of as empty space contains very thinly dispersed matter
True
We can detect exoplanets by the oscillations in the spectra of the stars they orbit or their _____________ in front of the star obscuring the light
Transit
As a star forms the formation ends at a line on the H-R Diagram called the _______ sequence
main
As the temperature of a star increases it will emit energy by forming ______ of material in the T Tauri Phase
jets
_______ are regions of gas and dust that can also contain stars
nebulas
A stellar cluster can be aged based on where the stars turn off of the main sequence
true
A Type I supernova is distinguished from a Type II supernova by the presence of hydrogen lines in the Type I supernova
False
Proton-proton fusion stops being able to support a star due to expansion of the Helium Core
True
A Type II supernova results in a neutron star
True
The fate of a star can be determined by the initial mass of the star
true
A white dwarf is an object made up of compressed matter supported by the _________ orbitals in the atoms it is made up of
electron
he Chandrasekhar mass is the mass at which the ____________ from the electron orbitals can no longer support the gravitational pressure and depends on the composition of the object
pressure
A type Ia supernova has an absolute magnitude of -19.5. The sun has an apparent magnitude of -26.74. How far away must an observer be from a type Ia supernova for it to have an apparent magnitude equal to the suns apparent magnitude in pc?
.3565
Once a star turns off of the ________________ it becomes a Red Giant and could creates elements up to iron
main sequence
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