1) The x-axis tells which of the following a) size b) location c) brightness d) temperature 2) The y-axis on the HR diagram tells a) brightness b) temperature c) location d) size e) color 3) Luminosity means a) brightness b) temperature c) color d) location e) size 4) Apparent magnitude refers to a) the appearance of how bright a star seems b) the measurement of how bright a star is c) how long until the star dies d) the revolution of a star 5) Spectral class is divided a) horizontally b) vertically c) diagonally d) it is not on the hr diagram 6) Red stars are ______, and blue stars are______ a) cold, hot b) hot, cold c) big, small d) small, big 7) Which of the following is not told on an HR Diagram a) size b) brightness c) color d) temperature e) location

HR Diagram Introduction

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