Quiz 3 Flashcards
The motion of sunspots was observed by Galileo and is an indication that the Sun is:
Spinning.
The name of the process that keeps the Sun hot is called:
Thermonuclear fusion.
The solution of the missing neutrino problem from the Sun’s core was resolved by the discovery of:
Neutrino oscillation and thus concluding that neutrinos have mass.
If star A has an apparent magnitude of 2 and star B has an apparent magnitude of 5 which star will appear brighter in sky to an observer on Earth?
Star A.
Given two stars one blue and the other red, which star has a higher surface temperature?
The blue star.
The spectral class of stars predominantly tells us what about a star?
The surface temperature of the star.
Sunspots are primarily caused by:
The Sun’s magnetic field.
The effect that allows astronomers to measure the magnetic field strength on both the Sun and also around other stars is called:
The Zeeman effect.
The proper motion of a star measures what about a star?
The star’s shift across the celestial sphere due to its motion in space.
In Einstein’s fatuous equation E=mc^2 what does the E and m stand for?
E is energy and m is mass.
