Chapter 1: Charting the Heavens
Multiple Choice



1.  

A full Moon must always set at approximately what time of the day or night?



2.  

Which of the following statements is true about the celestial coordinates right ascension and declination?



3.  

We would be more likely to get an accurate measurement of the distance from Earth to a nearby star if we took the angular measurements at times separated by what time interval?



4.  

A "light year" is a unit used for what kind of measurement?



5.  

How much is the angular difference between one synodic month of the Moon (new Moon to new Moon) versus one sidereal month (one complete 360-degree orbit)?



6.  

A star overhead will appear to move through what angle in the course of one hour?



7.  

A total lunar eclipse occurs whenever the Moon enters Earth's umbra at which point in its orbit?



8.  

What is the primary observable effect of the slow precession of Earth's rotational axis?



9.  

How many individual stars might a person with good vision but without optical aids be able to see as separate points of light between sunrise and sunset on a clear night from a site away from cities that is not light-polluted?



10.  

From the time that it appears to contact the horizon, approximately how long will it take for the entire disk of the Sun to set?



11.  

The Sun is about how many times bigger than Earth?



12.  

What are constellations?



13.  

Which of the following denotes the region of the sky near which the planets can always be found?



14.  

What is the number of times you have orbited the Sun in your lifetime?



15.  

Which of the following does not identify a unique time of the year at which Earth must be at a particular, distinct location in its orbit around the Sun?



16.  

Which of the following phases of the Moon is the one that occurs just after new Moon?



17.  

The phenomenon known as precession is due to a regular, periodic variation in what property of Earth's motion?



18.  

A surveyor wishes to measure the distance between two markers on either side of a river, as illustrated in Figure 1.23. She measures the distance AB to be 250 m and the angle at B to be 30 degrees. What is the distance between the two markers?



19.  

An object has a parallax of one degree. What is the parallax for an object at twice this distance?



20.  

How much longer is one solar day on Earth than one sidereal day?

Note: answer choices in this exercise are randomized.

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