The Water Planet Chapter 19 Section 1 Review pg. 474 #’s 1-7 Directions: Write down the question and the answer for each question on a piece of paper to be included in your Chapter 19 Notebook.

1 Name the five major divisions of the global ocean. –Atlantic –Pacific –Indian –Arctic –Southern

2 Explain the difference between an ocean and a sea. –A sea is a body of water that is smaller than the ocean, and that may be partially surrounded by land.

3 Define oceanography –The study of the physical, chemical, and biological characteristics of the ocean.

4 Describe two ways that oceanographers study the ocean. –SonarSonar Sound navigation and ranging, a system that uses acoustic signals and returned echoes to determine the location of objects or to communicate. –Submersibles Underwater research vessels that enable oceanographers to study the ocean depths. –Bathysphere: Connected to the research ship –Bathyscaph: Self-propelled and Free-moving

5 Explain how sonar works.how sonar works –Sonar uses acoustic signals and returned echoes to determine the position of objects or the depth of the ocean floor.

6 Describe two aspects of the ocean that submersibles are used to study. –Collect samples from the ocean floor –Take photographs of the ocean floor

7 List three types of submersibles. –Piloted by humans Bathysphere: Connected to the research ship Bathyscaph: Self-propelled and Free-movingBathyscaph –Remotely operated Submarine robots

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