3. which if the following factors determines how long a star will live ? ( 1point )
a . star’s color
b. the star’s mass
c. the star’s diameter
d. the star’s distance from the sun
4 . which of the following causes constellations to appear to move throughout the night sky ? (1point)
a . the earth’s rotation
b. the earth’s revolution around the sun
c. the stars’ apparent brightness
d . the stars’ absolute brightness
5. which of the following famous constellations is known as orion’s dog ? (1point )
a canid major
b. scorpius
c. taurus