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Explore the Data
After downloading the solar eclipse data file, open the file in your
favorite spreadsheet
program and explore what exists using the sorting
and graphing capabilities of the
spreadsheet program.
Exploration 1. Mapping the Data
What locations were included in the data set for solar eclipse data calculations?
Plot longitude
vs. latutude to get a visual representation of the data set map.
Print the graph and sketch the
coastlines of the continents represented by the data points.
If you're unsure if the data represents
an island calculation or a mainland calculation, refer to the data to find the geographic
location of the data.
Don't try to draw perfect coastlines, just sketch them so you can identify major landforms.
Exploration 2. Maximum eclipse location
Predict where the eclipse will be total by drawing the predicted area on the map drawn in Exploration 1. (The sun was directly overhead at local noon on that day at locations with a latitude of xx degrees.)
Where is the maximum eclipse equal to 100% coverage of the sun?
Plot these points in a separate graph.
Where is the maximum eclipse equal to 0-10% coverage of the sun?
Plot these points in a separate graph.
Where is the maximum eclipse equal to 10-20% coverage of the sun?
Plot these points in a separate graph.
Why does the location of maximum eclipse equal to 100% occur in one area, but the locations where the
maximum eclipse equal to 0-10% occur in two areas? Use the to compare the
eclipse from locations in the two areas to help you answer this question.
Exploration 3. Maximum eclipse at similar times
Where else is the eclipse at maximum WHEN it is maximum at a location near you? Plot these locations.
Does this area follow a longitude line? Give a possible reason for your
results.
©1998 John C. Park for Science Junction, NC State University. All rights reserved.
URL: http://www.ncsu.edu/sciencejunction/depot/simulate/eclipse/about.html
Last updated 3/25/98.
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