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Volcanoes of the Deep
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Viewing Ideas
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Before Watching
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On a map of the floor of the Pacific Ocean, have students locate
the Juan de Fuca Ridge. Review with students how the Earth's
crust is made of tectonic plates that move, and how seafloor
spreading and subduction occur.
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Have students discuss extreme environments, such as a desert,
Antarctica or the top of Mount Everest. What makes these
environments extreme? What kinds of organisms live there? How
have they adapted in order to survive? Have students brainstorm
a list of conditions they think would be found at the Juan de
Fuca Ridge. As they watch, have students look for organisms and
the adaptations that enable them to live in such harsh
conditions.
After Watching
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Review with students their lists of organisms found deep below
the ocean surface and some of the adaptations of each organism
that enable it to survive there. What adaptations are common
among the organisms? What adaptations are unique to a particular
organism?
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