Instructor Manual For Garrison, Tom and Ellis, Robert, Essentials of Oceanography, 9e, 2026, 9798214193496; Chapter 1: An Ocean World
TABLE OF CONTENTS Purpose and Perspective of the Chapter ................................................................................................... 1 Chapter Objectives ..................................................................................................................................... 1 What’s New In This Chapter ..................................................................................................................... 2 Chapter Outline .......................................................................................................................................... 2 Answers to End of Chapter Study Questions ........................................................................................... 5 Additional Resources ................................................................................................................................ 10
PURPOSE AND PERSPECTIVE OF THE CHAPTER The purpose of this chapter is to introduce the reader to the global ocean, establishes its importance to the planet and to human society, and describes how scientists study it. By the end of the chapter, readers will be aware of how the atoms that make up the Earth and its oceans were formed within ancient stars, and how the Earth’s first oceans formed following the Earth’s density stratification and outgassing. They will then learn the history of humanity’s exploration of the oceans, with voyaging for necessity evolving into voyaging for scientific and geographical discovery, led today by oceanographic institutions and international consortia.
CHAPTER OBJECTIVES The following objectives are addressed in this chapter:
Explain why we consider there to be only one world ocean.
Describe how the ocean influences various physical and biological characteristics of our planet.
Discuss how the scientific method is used to better understand oceanography.
Explain why stars are important to the ocean’s composition and characteristics.
Describe how the Earth formed and how its layers evolved through time.
Identify the sources of Earth’s water and how they are thought to have formed our ocean.
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