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Mystery Class Update: March 3, 2000
Today's Report Includes:
Leaping Into Your Classroom!
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Mrs. Berger's 5th Grade Class |
Remember this information was recorded on Monday, the same day you collected your sunrise/sunset data. (This week's sunrise/sunset times are provided at the end of this report)
Seeing the Light? Discussion of Challenge Question #1
Last week we asked "How do seasonal changes in photoperiod affect your
animal's food web?"
Thanks to Kaci, Anna, and Nathan from Mrs. Jones' 6th grade class in Canton, OH, who saw the light! They answered the Challenge Question for the species they are studying, the Manatee:
"We are following the migration of the manatee. The manatee's food web is definitely affected by the change in the amount of light. If the amount of light gets shorter and shorter, the food that a manatee eats also continues to decrease. The plants that are in a manatee's diet depend on sunlight to grow." Mrs. Jones' 6th grade students at Canton Country Day School in Canton, OH (pjones@ccd-school.org)
Generally, the longer the photoperiod, such as in spring and summer, the more
food that will be available. This is because the added sunlight and heat in spring
and summer make plants grow, and the plants provide food for plant-eating animals,
and these plant-eating animals can then be available as food for animals which prey
on them. Also, the added sunlight and heat warm the air and thaw frozen soil and
lakes, making other foods such as worms, insects and fish available too.
On the other hand, the shorter the photoperiod, such as in fall and winter, the less
food that will be available. The reduced amount of sunlight and heat means fewer
plants are available for plant-eating animals, and fewer worms, insects and fish
too, and therefore less food is available for animals that prey on these food sources.
For an example of an animal food "Webbing Activity" take a look at the lesson below:
- Seeing the Light Lesson (page 93 of the printed Teacher's Manual)
This Week's Sunrise/Sunset Times
Journey North Mystery Class
Sunrise/Sunset Data
Data For: Monday, February 28, 2000
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MYSTERY CLASS |
SUNRISE |
SUNSET |
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#1 |
06:40 |
19:33 |
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#2 |
08:18 |
18:55 |
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#3 |
07:02 |
18:46 |
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#4 |
06:23 |
18:30 |
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#5 |
07:16 |
17:46 |
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#6 |
07:02 |
19:59 |
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#7 |
07:07 |
18:03 |
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#8 |
04:49 |
23:15 |
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#9 |
07:32 |
18:23 |
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#10 |
07:39 |
18:16 |
The Next Mystery Class Update Will be Posted: March 10, 2000
Copyright 2000 Journey North. All Rights Reserved. Please send all questions, comments, and suggestions to our feedback form
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