Complex ocean water circulation patterns become clear with our easy-to-observe working model. Run warm water, representing equatorial water, and cold “polar” water together to re-create density currents that circulate vertically. It comes with two clear plastic tubes, two clear plastic connecting tubes, two clear plastic containers, food coloring, salt, and a user’s guide. Tube size: 1 1/2″ dia. x 12″L; connecting tube size: 1/2″ dia. x 8 1/4″L; container size: 3 7/8″ cube.
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