Chapter 27 - Astronomy Flashcards
The colour of the hottest star is
Blue
In the majority of stars, the most common element is
Hydrogen
Stars appear to move in circular paths around Polaris because
The earth rotates on its axis
The change in position of a nearby star compared with the position of a faraway star is called a
Parallax
The absolute magnitude of a star is
The true brightness of a star
A main sequence star generates energy by fusing
Hydrogen into helium
Black holes are difficult to locate because they
Do not give off light
A pattern of stars is called a
Constellation
Stars appear in fixed locations in the sky because
They are so far from the earth
The basic types of galaxies are
Spiral, elliptical and irregular
A prostatic becomes a star when it begins to
Generate energy