Lesson 2: Primary Production and Upwelling in the Ocean Colorful
Convection Currents Materials / Preparation Review the
instructions and video at Easy Science Experiments: Colorful
Convection Currents Each group of students will need: Groups of
two to four Easy Science Experiments: Colorful Convection
Currents includes a video demonstration. If you have never seen
this activity done, you may want to review the video before
trying the activity. This hot and cold water activity can be
rather messy. We encourage you to try the activity yourself
before doing it in the classroom. Providing students with
buckets can help to avoid major water spills during this
activity. Make sure that the bottles are only stacked inside the
buckets. You may want to do the activity outside. If you feel
that your students will not be able to do the activity, you show
the online video, but it is more powerful to have students do
the experiment themselves. Keep an ample supply of hot and cold
colored water handy. For most students, it