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Look Through the PowerPoint Slides and Answer the Questions on Outcome Related Activity #3
April 3rd, 2014
Sun’s changing vertical ray
Sep. 21
Dec. 21
Jun 21
Mar. 21
Red dot shows whereSun is overhead
Winters in the North Pole…No sunlight between early October until early March
Summers in the North Pole•The sun rises at the North Pole on the Spring Equinox, approximately March 21, and the sun rises higher in the sky with each advancing day, reaching a maximum height at the Summer Solstice, approximately June 21.
•The sun sinks below the horizon on September 21st.
Changing Zodiac Constellations
Match the picture with the season
Date?
September 23
Vertical Ray?
Equator
Sunrise?
Due East
Sunset?
Duration of daylight?
12 hours
Name of orbit position?
Autumnal EquinoxDue West
Date?
Dec. 21
Vertical Ray?
23.5 South
Sunrise?
Southeast
Sunset?
Duration of daylight?
8 hours
Name of orbit position?
Autumninal Equinox
Southwest
Sun’s Path?
Average
Name of orbit position?
Winter Solstice
Date?
Mar 21
Vertical Ray?
Equator
Sunrise?
Due east
Sunset?
Duration of daylight?
12 hours
Name of orbit position?
Autumninal Equinox
Due west
Sun’s Path?
Average
Name of orbit position?
Sun’s Path?
Low – note long shadows
Winter SolsticeName of orbital position?
Vernal Equinox
Date?
June 21
Vertical Ray?
23.5 North
Sunrise?
Northeast
Sunset?
Duration of daylight?
16 hours
Name of orbit position?
Autumninal Equinox
Northwest
Sun’s Path?
Average
Orbital position?
Summer Solstice
At which season is theEarth very slightlycloser to the sun
Winter (January)
perihelion
Summer (June)aphelion
On which date is theDaylight period longerFor the northern hemisphere?
Label north on the diagram
Draw in the path ofThe sun on Dec.1st
Label the North Star Polaris
On which date at noon willthe observer cast theshortest shadow?
Where is the sun’sVertical ray strikingOn the autumnalEquinox?
equator
Where is thesun’s verticalray striking onJune 21st ?
23½º N
Where is thesun’s verticalray striking onDecember 21st ?
23½º S
east southnorth
Dec. 21st
March 21st
June 21st
On which date are the sun’srays striking most directly?
On which date is the heatingfrom the rays most efficient?
On which date is theSurface temperature mostlikely highest?
On which date are shadowsat noon the longest?
