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.
The name of the method to measure the distance to nearby stars directly is called:
Parallax.
The famous H-R (Hertzsprung-Russel) diagram is a chart that plots which two quantities?
Luminosity and temperature.
Observations of binary stars allow astronomers to measure what about the stars?
The masses of the stars.
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.
Suppose that a star has a parallax of 1/10 arcseconds, how far away is the star?
10 parsecs.
In determining the absolute magnitude of a star, it should be placed how far away from the Earth?
10 parsecs.
