ASTRONOMY 104 MIDTERM EXAM STUDY QUESTIONS AND ANSWERS.
A Earth-orbiting artificial satellite is passing by Polaris. At closest
approach it is about a fist at arm's
length away in angular separation. What is the closest approach in angle
and in spatial separation?
Correct Answer -About 10 degrees
in angle and the spatial separation is virtually the same as the EarthPolaris spatial
separation since the Earth-satellite spatial separation is negligible for most
purposes compared to
the Earth-Polaris spatial separation.
Two stars are a fist width's apart on the sky. (The fist is at arm's length.)
What is the angular
separation of the two stars? How far apart are they in space?
Correct Answer -The angular separation is about 10 degrees
. The spatial separation CANNOT be determined from the
given information
A straight line on a linear plot represents a/an
___________________function.
Correct Answer -linear
A curve on a linear plot that decreases as 1 over the square of the
horizontal axis coordinate represents