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.

Assignment Currently Open

Summative or Formative

Date Issued Date DueDate Into

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Quiz 24 S5 3/23 3/23 4/11

WS - The Coastal Zone and Waves F 3/27 3/30

Quiz 25 S6 3/30 3/30 4/11

WS – Weather, Climate, and the

AtmosphereF 4/2 4/5

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.