1Why is scientific notation a preferred method for expressing numbers in astronomy?
2
What is the approximate diameter of the Earth in kilometers?
3Which statement best defines a planet in astronomical terms?
4How does the Sun generate its energy?
5What is the primary difference between a planet and a star?
6Which sequence correctly orders the following astronomical distances from smallest to largest?
7If light takes 8 minutes to travel from the Sun to Earth, and over 4 hours to travel from the Sun to Neptune, approximately how many Astronomical Units (AU) is Neptune from the Sun?
8What does a typical galaxy, like our Milky Way, contain?
9If the distance to a star is 450 light-years, what does this imply about the light we observe from it?
10Why do optical astronomers often place their telescopes on the tops of mountains?
