science 2 Flashcards
1
Q
constellation
A
a region of the sky that contains a recognizable star pattern
2
Q
zenith
A
a point in the sky directly above an observer
3
Q
altitude
A
an angle between an object in the sky and the horizon
4
Q
horizon
A
the line where the sky and Earth meet
5
Q
light-year
A
the distance that light travels in one year; about 946.trillion kilometers
