4-2 Flashcards
1
Q
Parallax
A
The apparent change in the position of an object
2
Q
Universe
A
All of space and everything in it
3
Q
Scientific notation
A
Uses of powers of ten to write very large or very small numbers in shorter form
4
Q
Light year
A
The distance that light travels in 1 year
5
Q
Astronomers often measure distances to nearby stars using
A
Parallax
6
Q
What do they use to measure distances between stars
A
Light year
7
Q
A light year is
A
A unit of distance NOT time
8
Q
How is scientific notation useful to astronomers?
A
To help describe the vast distances in space
9
Q
To describe the scale of the universe astronomers use
A
Scientific notation ( light years )
