Chapter 27 Computer Lab Exercise part 1
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Astronomy Computer Lab

This is to be turned in today. Material from this exercise will be on your test over chapters 1, 2, and 3 next week.

A. Go to the following web site.


http://www.synapses.co.uk/astro/astro.html



B. Answer the
following questions.

1. How close is Polaris to true north?
2. How can our latitude be determined by using Polaris?
3. The "Big Dipper" Is part of what constellation?
4. Draw the dipper, and label the 2 stars which point at
Polaris.
5. Name the star nearest the sun.
6. The "Little Dipper" is part of what constellation?
7. What is the term astronomers use for sky longitude?
8. Chaph is part of what constellation?
9. Whether or not a star is circumpolar depends upon what?
10. How can you determine which stars are circumpolar for
your latitude?

Now click on "The Earth's Motion" at the page bottom.

11. A. Define "Zenith". B. Define Nadir
12. Where would you be if the stars revolved around your Zenith?
13. Why is your meridian important in observational astronomy?
14. A. Define altitude. B. Define Azimuth
15. Why does a stars altitude and azimuth change?
16. What is apparent motion?
17. When would the altitude and azimuth of 2 different observers in different cities be the same?
18. What is UT?
19. What is meant by "Zulu time"?
20. What direction does the sun rotate if you were watching Earth from Polaris?
21. In what direction does Earth orbit the sun?
22. Why can't we see all the stars in every direction all year long?
23. Who wrote the first book on astronomy?
24. What is meant by geocentric?
25. Sketch the Ptolemaic universe.
26. Why does everything appear to rise in the east and set in the west?

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Lowell Bailey

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