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(Solved) 100 - Homework #1 _______________________ Name:______________________ Go to this website: Due Wed. 1, 11:59 pm...


I am really confused on what quesitons 6-12 are wanting me to do.  I have attempted to use the simulator located at the link provided at the top of the first page but it still confuses me.  I am looking for someone to answer questions 6-12 and give an explanation as to how you used the simulator to get the answers.  

GEO. 100 – Homework #1 _______________________ Name:______________________
Go to this website:
Due Wed. Feb. 1, 11:59 pm www.learner.org/jnorth/tm/mclass/eclipticsimulator.swf
If you cannot access it, contact me and I will help you! You also need to refer to your text, pages 50-53. On
the website, use the "click & drag" feature in three places to operate the simulation: click & drag the
globe to change its position during its revolution, click & drag the arrow positioned over the months of
the year, or click & drag the line of latitude to change the position of the stick figure on the globe.
The simulation uses the term “Sun’s altitude” to refer to the angle of incoming sunlight.
1. In our text, we learn that the amount of solar energy or _________________ intercepted by a particular spot
on Earth depends on these two factors:
1)____________________________________________________________________________
2) _____________________________________________________________________________
2. In our text, we learn that the term "______________________________________________________" refers
to the angle at which solar radiation strikes the Earth at any given location at a particular point in time.
2. March 21st and September 21st are given the term "________________________________," and these two
dates mark two important seasonal changes, from Winter to Spring, and Summer to Fall, respectively.
3. December 21st is the "___________________________________" for the northern hemisphere. Where is
the sun directly overhead at that time?
4. June 20-21 is the "___________________________________" for the northern hemisphere. Where is the
sun directly overhead at that time?
5. On the website simulator, place the Earth at the date of March 21st. Describe how the Earth is divided
between illumination & darkness? In other words, what two points on the Earth does that dividing line pass
through? Which illustration in your text does this most resemble? 6. On the website simulator, with the Earth still at March 21st, place the stick figure at 0 degrees latitude, or the
EQUATOR. Identify the altitude (angle) of the Sun here: ___________________.
7. On the website simulator, place the Earth at September 22nd, and place the stick figure at 39.0 degrees N
latitude, which is our latitude. Identify the Sun’s angle or altitude at this latitude, on this date, and estimate the
number of hours of sunlight at this latitude on this date. 8. On the website simulator, place the Earth at June 21st, and place the stick figure at 23.5 degrees N, or as close
as you can get (I could get it at 23.4 degrees). What is the altitude of the Sun here? ___________ This line of
latitude is called _______________________________________.
9. With the Earth at June 21st, move the stick figure to a point between 66.6 degrees S and 90 degrees S. What
are the conditions of illumination at this latitude on June 21st? Referring to Figure 1.23 in our text, how long
will those conditions persist, during the 24-hr day at this latitude on June 21st? 10. On the website simulator, place the Earth at December 21st. Place the stick figure at 23.5 degrees S, or as
close as you can get. What is the angle of the Sun's rays at this point? This line of latitude is called
______________________________________. 11. With the Earth at December 21st, move the stick figure back to that point between 66.6 degrees S and 90
degrees south. What are the conditions of illumination now? How long will those conditions persist, during the
24-hr day at this latitude on Dec. 21st? 12. Place the Earth at February 1st. Place the stick figure at the following locations and identify the angle of the
sun’s rays, or sun’s “altitude” at each of these locations, and comment on the differences in insolation at each.
37 degrees north latitude____________________________________________________________________
23.5 degrees south latitude___________________________________________________________________
48 degrees south latitude ____________________________________________________________________
68 degrees north latitude _____________________________________________________________________
13. Using the website simulator, identify altitude of the sun on the day of your birth, at the place of your birth.
To do this, you will also need to use the Internet to look up the Latitude of the town where you were born. This
is simple: just Google "Town, State, Country Latitude" and you should find this. If you were born in a location
too remote to be found, use the nearest town/city of significant size. Also, comment on the insolation at that
location on that date, taking into account BOTH factors of insolation.
Town/State or Country: _______________________________ Date:_________________________________
Sun's Altitude on that date:__________________________________

 


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