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Transcript 
Look Through the PowerPoint Slides
and Answer the Questions on
Outcome Related Activity #3
April 3rd, 2014
Sun’s changing vertical
ray
Red dot shows where
Sun is overhead
Jun 21
Sep. 21
Mar. 21
Dec. 21
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?
Due West
Duration of
daylight?
12 hours
Autumnal Equinox
Name of orbit position?
Date?
Dec. 21
Vertical Ray?
Autumninal Equinox
Name of orbit position?
23.5 South
Sunrise?
Southeast
Sunset?
Southwest
Name of orbit position?
Sun’s Path?
Winter Solstice
Duration of
daylight?
8 hours
Average
Date?
Mar 21
Vertical Ray?
Autumninal Equinox
Name of orbit position?
Equator
Sunrise?
Due east
Name of orbit position?
Sun’s Path?
Sunset?
Name of orbital position?
Due west
Duration of
daylight?
12 hours
Winter Solstice
Vernal
Equinox
Sun’s Path?
Low – note long
shadows
Average
Date?
June 21
Vertical Ray?
Orbital position?
Autumninal
Equinox
Summer Solstice
Name of orbit position?
23.5 North
Sunrise?
Northeast
Sunset?
Sun’s Path?
Northwest
Duration of
daylight?
16 hours
Average
At which season is the
Earth very slightly
closer to the sun
Winter (January)
perihelion
On which date is the
Daylight period longer
For the northern hemisphere?
Summer (June)
aphelion
Draw in the path of
The sun on Dec.1st
Label north on the diagram
Label the North Star Polaris
On which date at noon will
the observer cast the
shortest shadow?
Where is the sun’s
Vertical ray striking
On the autumnal
Equinox?
Where is the
sun’s vertical
ray striking on
December 21st ?
equator
23½º N
23½º S
Where is the
sun’s vertical
ray striking on
June 21st ?
On which date is the
Surface temperature most
likely highest?
June 21st
On which date are the sun’s
rays striking most directly?
March 21st
On which date is the heating
from the rays most efficient?
On which date are shadows
at noon the longest?
north
Dec. 21st
east
south
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