Chapter 27 Computer Lab Exercise part 1
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Earth Science Ch. 27 Computer Lab

A. Go to the following web site and answer the questions below.


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



B. Click on "Getting Your Bearings", and 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. Which stars are circumpolar depend 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?

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Lowell Bailey

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