Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20923508a&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #235.08; Bulletin of the American Astronomical Society,
Astronomy and Astrophysics
Astronomy
Scientific paper
Seasonal differences in incoming solar radiation were examined in a pre-service elementary teacher’s physical science content course by approximating daily incoming radiation totals. Students used actual data to approximate length of daylight and the angle of elevation of the sun at local noon at their university’s location for the solstices and equinoxes. Using a linear approximation of radiation between sunrise and local noon and again between local noon and sunset, students graphically represented the daily energy/area data for the astronomically significant days. The students were able to visualize the effects the varying length of day and the varying angle of elevation of the sun had on daily solar radiation. The effects that differences in Earth-Sun distances were examined and found to be negligible compared to those caused by the tilt of the Earth.
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