ThursdayApril 5, 2012(Discussion &
Worksheet – The Structure of the
Atmosphere; Earth-Sun Relationships)
The Launch PadThursday, 4/5/12
Analyze the information
about Earth’s atmosphere from
the graph.
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WS - The Coastal Zone and Waves F 3/27 3/30
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WS – Weather, Climate, and the
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WS – The Structure of the
AtmosphereF 4/4 4/10
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Complete WorksheetThe Structure of the
Atmosphere; Earth-Sun Relationships
Daily Paths of the Sun at 40º N Latitude
Figure 16.10 A
Figure 16.10BDaily Paths of the Sun at 40º N Latitude
Daily Paths of the Sun at 40º N Latitude
Earth - Sun Relations Thus, the seasons are caused by Earth’s changing orientation to
the Sun throughout the year, and the fact that Earth’s axis is inclined 23½º, and the axis is always pointed in the same direction.
Here are some special days in the Northern Hemisphere:
At the Summer solstice (June 21–22), the Sun’s vertical rays are located at the Tropic of Cancer (23½º N latitude.)
At the Winter solstice (December 21–22), the Sun’s vertical rays are located at the Tropic of Capricorn (23½º S latitude.)
At the Autumnal equinox (September 22–23), the Sun’s vertical rays are located at the Equator (0º latitude.)
At the Spring (Vernal) equinox (March 21–22), the Sun’s vertical rays are located at the Equator (0º latitude.)
Characteristics of the Solstices and Equinoxes
Figure 16.14
Multiple exposures of the midnight Sun in late June or July in high northern latitudes.
Average monthly temperatures for
six cities located at different latitudes.
Note that Capetown, South
Africa, experiences winter in June,
July, and August.