Chapter 9 Astronomy

The most abundant element in the Sun is hydrogen. (T/F)True
There are as many absorption lines in the solar spectrum as there are elements present in the Sun. (T/F)False
The density and temperature in the solar corona are much higher than the photosphere. (T/F)False
Sunspots appear dark because they are hotter than the surrounding gas of the photosphere. (T/F)False
Flares are caused by magnetic disturbances in the lower atmosphere of the sun. (T/F)True
The proton-proton chain releases energy because mass is created in the process. (T/F)False
Neutrinos have never been detected experimentally. (T/F)False
The sun is roughly (A) the same size, (B) 10 times larger, (C) 100 times larger, (D) 1 million times larger than Earth.(C) 100 times larger
The Sun spins on its axis roughly once each (A) hour, (B) day, (C) month, (D) year.(C) month
Astronomers on Venus would measure a solar constant (A) larger than, (B) smaller then, (C) the same as on earth.(A) larger than
A Typical solar granule is about the size of (A) a U.S. city, (B) a large U.S. state, (C) the Moon, (D) Earth.(B) a large U.S. state
The time between successive sunspot maxima is about (A) a month, (B) a year, (C) a decade, (D) a century.(C) a decade
Solar energy is produced by (A) fusion of light nuclei into heavier ones, (B) fission of heavy nuclei into lighter ones, (C) the release of heat left over from the Sun’s formation, (D) solar magnetism.(A) fusion of light nuclei into heavier ones