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Top Subjects:  Animals   Art/Architecture   Geography   Health   History   Math   Reading   Science
 
O V E R V I E W
Resource:Lighting Up the Sea
Provider:National Geographic
Summary:Simulation & exploration of bioluminescence marine animals
Description:"The ocean is divided into three light zones: the photic zone (less than 220 yards or 200 meters from the surface of the ocean), the "twilight" zone (between 220 to 1,100 yards or 200 to 1,000 meters from the surface), and the aphotic zone (more than 1,100 yards or 1,000 meters from the surface). In the "twilight" zone, it becomes increasingly difficult to see, and colors become obscured. The aphotic zone receives no light at all, and this region's inhabitants live in complete darknessÂ…with the exception of the lights they emit from their own bodies. This phenomenon is known as "bioluminescence." While bioluminescent organisms can be found at all levels of the sea, their light-emitting capabilities come in particularly handy at the deeper levels.
Students will explore the reasons for bioluminescence by conducting a simulation and viewing pictures of bioluminescent marine animals on the Web. They will conclude by pretending to be deep sea divers and writing journal entries about their impressions of a bioluminescent animal they have encountered."
Contributed by:Marnice Emerson
C A T E G O R I E S
Orientation:General
Subjects:Animals, Geography, Earth Science, Science
Teaching Methods:Simulation, Tutorial, Unit Study
I N T E N D E D   F O R:
Ages:8,9,10,11
Grades:3,4,5
F O R   M O R E   I N F O R M A T I O N
Web Site:http://nationalgeographic.com/xpeditions/lessons/08/g35/seaslighting.html

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