Jepoardy THang Flashcards
Why are low mass stars unable to turn into red giants
They are not massive enough for shell fusion
Hottest part of the sun’s atmosphere
Corona
List energy transport mech involved as energy moves from the core of the sun to the earth
core > convection > surface > Gamma Rays > Convection > radiation >
Who first meassured distance to galaxy and how did they do it
Hubble , using cepheid (finding pulsing stars)
What triggers a massive star super nova ?
The collapse of its iron core bc of failure of electron degeneracy pressure
How does inflation explain the observed large scale structure of the universe ?
(lumpiness) inflation would have expanded the quantum fluctuations within the very young universe into the cosmic web pattern
What causes the sun’s wax and wane
Different rotation of the sun
Why would stellar parallax measurements from mars result in more accurate distance estimates to the stars?
Larger baseline = larger angle of parallax
Why are measurments of eclipsing binary stars the most accurate ?
The doppler shift has the true velocities of stars since they are seen edge on
What specific reaction in hydro husion process produces a nutrino ?
2 protons colide , one turns into a nutrino
How is the means of a galaxy determind
Newtons ver of Kepplers 3rd law
Measuring velocity of objs in outer part of the galaxy and are determining how far they are from the center of mass
If star has apparently magnitude of +2 and absolute of +3 is it closer than 10 parsecs?
Yes
Whats first evidence that shows the sun is not the center of MWG
Calculated the distance of many globular clusters
What evidence suggests the universe is accelerating ?
The expansion rate in the past is slower than it is today
What occurs in a star to make it climb the red latter branch
Shell fusion
