Chapter 13
Section 2 The Ocean Floor
Chapter 13
Bellringer
Objectives
Pretend you have walked off the edge of North
America and into the depths of the Atlantic Ocean.
As you walk along the ocean floor toward Europe,
what do you see? Draw the ocean floor as you
imagined it.
Illustrate your answer in your science journal.
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• Describe technologies for studying the ocean floor.
• Identify the two major regions of the ocean floor.
• Classify subdivisions and features of the two major
regions of the ocean floor.
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Chapter 13
Section 2 The Ocean Floor
Section 2 The Ocean Floor
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Chapter 13
Section 2 The Ocean Floor
Studying the Ocean Floor
• Seeing by Sonar Scientists use
sonar to determine the ocean’s depth.
• Oceanography via Satellite
Scientists use images from the
satellite Seasat to study ocean
currents.
• Studying the Ocean with Geosat
Scientists use the Geosat satellite to
measure slight changes in the height
of the ocean’s surface.
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Chapter 13
Section 2 The Ocean Floor
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Chapter 13
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Chapter 13
Section 2 The Ocean Floor
Section 2 The Ocean Floor
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Chapter 13
Section 2 The Ocean Floor
Revealing the Ocean Floor
• Regions of the Ocean Floor The two regions of
the ocean floor are the continental margin and the
deep-ocean basin.
• Underwater Real Estate The continental margin
and the deep-ocean basin are subdivided into
different areas and have different features, as shown
on the next two slides.
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Chapter 13
Section 2 The Ocean Floor
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Chapter 13
Section 2 The Ocean Floor
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Chapter 13
Section 2 The Ocean Floor
Exploring the Ocean with Underwater
Vessels
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Chapter 13
Section 2 The Ocean Floor
The Alvin underwater. Image courtesy of Woods Hole
Oceanographic Institutions (WHOI)
• Piloted Vessels: Alvin and Deep Flight Alvin and
Deep Flight are two research vessels that can reach
some of the deepest parts of the ocean.
The Deep East Expedition
Leg Two Science Team
aboard R/V Atlantis standing
in front of Alvin. Image
courtesy of Deep East 2001,
NOAA/OER.
• Robotic Vessels: JASON II and Medea JASON II
and Medea are a robotic team. JASON II explores
the ocean floor. Medea is attached to JASON II with
a tether and explores above the the sea floor.
http://www.whoi.edu/home/intera
ctive/alvin/
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Chapter 13
Section 2 The Ocean Floor
Chapter 13
Section 2 The Ocean Floor
Photograph of ROV Jason II. Credit: © Woods
Hole Oceanographic Institution.
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