A follow-up activity is included to define different types of pollution and challenge students to discover sources of pollution and its ramifications on an imaginary river. In a series of student directed experiments and demonstrations students observe the properties of water and compare these observations to properties of other liquids. Students are asked to form hypotheses explaining each property they explored. Students will investigate and discover the dangers that threaten sea turtles and their habitats while competing in a game to see who can overcome these obstacles and reach the sea with the most turtles. General background material is provided that expands learning to include anatomy and terrestrial turtles.
Tides affect many facets of circulation and mixing in continental shelf areas.
Tides occur in the mid-ocean as well as along the coastline. Tides are the result of the interaction between the gravitational forces that exist between the earth, moon and sun. These interactions are demonstrated in simple models constructed by students. Materials are included to enable students to predict tides and also construct tide graphs and tables. Using a ripple tank or overhead projector students can study waves and how they affect coastal ecosystems.