A Question


A Question about Latitude and Length of Day

by: Delmar Students



               Hours of Daylight on March 20, 1995 EQUINOX
----------------------------------------------------------------------------
90 N
80 N
70 N                     ----Utsjoki----Finland---------------
60 N                      ---Helsinki----Finland--------------
50 N                        -----Dalmeny---Canada---------------
40 N                    -----Somerville----New Jersey--------
30 N                   -----Sde-Boker------Israel----------
20 N                      -------Brownsville---Texas-----------
10 N
Equator                 ----Guayaquil-----Ecuador-----------
10 S
20 S
30 S                      ---Lake-Macquarie-City--Australia----
40 S                      ----Christchurch----New---Zealand----
50 S                      ---Dunedin----New--Zealand-----------
60 S
70 S                      ^...sunrise                  sunset..^
80 S
90 S
      00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23

                                 Time of Day


   James and I took the sunrise and the sunset data from March 20,1995, and we
graphed it. Then we looked at Leslie's graph from December 21, sunrise sunset
data and we compared them. We noticed that latitude makes a difference in
December.  Some places had more daylight. In March the latitude did not seem
to make a difference.  Why not?

by:
Chrissy and James (age 11)

============================================================================

               Hours of Daylight on December 21 1994
----------------------------------------------------------------------------
90 N
80 N
70 N                                    -FI----
60 N                              ----Finland--------
50 N                           ----Canada---------------
40 N                        -------Illinois--USA--------
30 N                        -------Florida-USA------------
20 N                        -------Hawaii-USA-------------
10 N
Equator                ----------Fortaleza,--Brazil--------
10 S
20 S                   ---------Rio-De-Janerio,--Brazil-------
30 S                    ------Santiago,--Chile-------------------
40 S                   ^                                       ^
50 S                sunrise                                  sunset
60 S
70 S
80 S
90 S
      00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23

                                 Time of Day

by: Leslie 
    Delmar Elementary
    age 11
-------------------------------------------------------------


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