ASTRONOMY TEST 3 Chapter 9

TRUE OR FALSE Neutrinos have never been detected experimentally.

FALSE

TRUE OR FALSE Sunspots appear dark because they are hotter than the surrounding gas of the photosphere.

FALSE

TRUE OR FALSE The density and temperature in the solar corona are much higher than in the photosphere.

FALSE

TRUE OR FALSE The proton-proton chain releases energy because mass is created in the process.

FALSE

TRUE OR FALSE There are as many absorption lines in the solar spectrum as there are elements present in the Sun.

FALSE

TRUE OR FALSE Flares are caused by magnetic disturbances in the lower atmosphere of the sun.

TRUE

TRUE OR FALSE The most abundant element in the sun is hydrogen.

TRUE

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 suns formation d) solar magnetism

a) fusion of light nuclei into heavier ones

Astronomers on Venus would measure a solar constant _______ as on earth. a) larger than b) smaller than c) the same

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 sun is roughly ________ than earth. a) the same size b) 10 times larger c) 100 times larger d) 1 million times larger

c) 100 times larger

The time between successive sunspot maxima is about ______. a) a month b) a year c) a decade d) a century

c) a decade

The sun spins on its axis roughly once each _______. a) hour b) day c) month d) year

c) month