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Grades 9-12   Unit 3
Tides and the Rocky Shore

Table of Contents

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Conceptual Scheme
Marine Aquaria
Successful Fieldtripping

1. The Year of the Tides
Each class constructs a giant, year long tide calendar and looks for patterns in the tides.

2. Using the 24 Hour Clock
This lesson provides practice reading the 24 hour clock and adding and subtracting 24 hour clock times.

3. Types of Tides
Students read about and graph diurnal, semidiurnal and mixed tides.

4. Oceans in Motion: The Tides
This reading provides explanations of some of the causes of the tides.

5. Barnacles: Still Hanging On
This three part lab, the first in a series of lessons about intertidal, rocky shore animals, explores barnacles’ responses to temperature changes, their feeding behaviors and their life cycle stages.

6. Snails, limpets and chitons: Moving On
Students closely observe the movement of these mobile intertidal animals.

7. Sponges
Students take progressively more focused looks at sponge looking first at the whole animal, then at its body surface, and then at the composition of its body walls.

8. One From Many
This lab duplicates a classic experiment in which sponge cells are separated and their reaggregation observed.

9. Who’s Living Here?
Students dissect a sponge and count and identify the commensal organisms in the animal.

10. Wharf Rat – Intertidal Zonation
This field activity examines patterns and causes of zonation of intertidal marine organisms.

11. The Ecological Niche
Each student researches and describes the ecological niche of a selected marine organism.

12. Create a Rocky Shore
Student teams create a rocky shore scene, placing animals in their correct zones and adding interpretive notes.

13. The Black Tide
Students test a variety of materials to determine the best methods for cleaning up oil spills so they won’t harm the rocky shore.

14. Tanker Spill
Students model an oil spill by dispersing popcorn. They then track the spread of the spill and analyze how wind and water conditions affect the severity of a spill.

Production Credits

Below, you’ll find helpful resources for use with the above activities.

Unit III: Resources

Activity 3 Types of Tides
Understanding Tides part a
Understanding Tides part b

Activity 13 The Black Tide
Offshore drilling platform
Oil Platform derrick
Drill string
Lessons of Valdez
What happened on March 24, 1989

Rocky Beaches Unit Final: Creation of Piling Exhibit

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