Last week, some of you noticed something peculiar happening with Mystery Class # 6. This was no early April fools joke--we made a mistake! The sunset time for Mystery Site # 6 should actually have been 20:54, not 18:54--sorry for any confusion. We made a subtraction error when converting to Military Time.
Some classes noted something else strange at this Mystery Site, and we asked you about this in the Challenge Question # 61 which asked:
"Based on this week's sunrise/sunset data, what do you think happenened at Mystery Site # 6 ? Why doesn't this change your graph?"
Thanks to the classrooms who answered this Challenge Question. Just as they suspected, the strange change in times with this Mystery Class was caused by the beginning of Daylight Savings time at this site. However, just because people shifted their clocks for Daylight Savings Time this didn't cause photoperiod to change. Obviously the sun stayed up for the same number of hours regardless of what time people said it was. Do you know when Daylight Savings Time takes effect in your town? Remember, this won't affect your graph.
Here's the sunrise and sunset data for this week. You'll find another set of clues below. Are you almost ready to guess where these sites are located? Clues will be coming for just 3 more weeks, then you'll have a chance to place your guess.
JOURNEY NORTH MYSTERY CLASSES
SUNRISE/SUNSET DATA
DATE: Monday, April 1st
MYSTERY CLASS SUNRISE SUNSET
# 1 5:06 18:46
# 2 5:52 18:32
# 3 7:01 18:43
# 4 5:49 18:11
# 5 6:27 18:12
# 6 8:00 20:59
# 7 6:47 19:00
# 8 6:35 18:19
# 9 5:18 17:59
#10 6:35 18:55
Clues from your Mystery Friends:
# 1 "The average high temperature here this month is 6 C, and the average low temperature is -8 C.
# 2 "We have a six hour time difference from England."
# 3 "A port on the alternative route to Suez."
# 4 "Our flag includes lots of stars."
# 5 "Our continent was never part of the supercontinent 'Laurasia'."
# 6 "We live less than 200 km from the world's sixth largest sea.
# 7 "We have dolphins. There are many unique kinds of shells."
# 8 "We are the first to see the new day."
# 9 "We live on the seventh largest ( ) in the world."
#10 "Only 15% of the land in our country is arable."
Students Answers to Challenge Question # 61:
From COLORADO:
We think the change at Site #6 is because of Daylight Savings Time.
Mrs. Allen's 4th grade class, South Park Elem
Pueblo, Co (garyt@ns-1.csn.net)
From MINNESOTA:
Dear Mrs. Berger's Class,
Ms. Betsy Bryant, a student in our fourth grade class, says that class
number 6 must have gone on daylight savings time. The graph looks as if it
took a big dip down.
Thank you,
Mr. Carpenter's enthusiastic class
Carpenter, Curt (ccarpent@dh.minnetonka.k12.mn.us)
Thanks to Mrs. Berger's 5th Grade Class
Roslyn Public Schools
Roslyn, NY
**Visit the East Hills School
WEB SITE
The Next Mystery Class Update Will be Posted on April 12, 1996.
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