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Published bySpencer Turner
Modified over 4 years ago
The Ocean Basins
Five Major Oceans Arctic Pacific IndianAtlantic Southern
Five Major Oceans Atlantic – 2 nd largest & youngest ocean (3.3km average depth) Pacific – 1 st largest & deepest ocean (3.9km average depth) Indian – 3 rd largest ocean (3.8km average depth)
Five Major Oceans Arctic – the smallest & shallowest ocean (1.4 km average depth) Southern – 4 th largest ocean; surrounds Antarctica (3.8km average depth)
What is a sea? Small area of the ocean that is partially surrounded by land
The Seven Seas Numerous seas – they are all considered part of an ocean
Exploring our Oceans Oceanography is the study of the physical characteristics, chemical composition and life forms of the ocean.
What are Submersibles? Underwater research vessels The Alvin The Jason
SONAR Important to help map ocean floor Sound Navigation and Ranging
transmitterreceiver How SONAR works… ocean surface ocean floor
Differences in the time it takes for the sound waves to leave the boat and then return tell scientists how deep the ocean bottom is.
Features of the Ocean Basins Continental margin: portion of ocean made up of continental crust
Features of the Ocean Basins continental shelf: flat part of continental margin covered by shallow ocean water Formed by changes in sea level Avg depth = 60 m
Features of the Ocean Basins continental slope: boundary between continental crust and oceanic
Features of the Ocean Basins submarine canyons: deep, v-shaped valley that cuts through shelf & slope
Features of the Ocean Basins continental rise: wedge of sediments that separates slope from ocean floor
Features of the Ocean Basins abyssal plain: large flat area on the ocean floor
Features of the Ocean Basins seamount: underwater volcanic mountain (1000m)
Features of the Ocean Basins guyot: a flat-topped submerged seamount
Features of the Ocean Basins trench: deep narrow valleys along the edges of ocean floor Marianas Trench in Pacific ocean is 36,000 ft deep (6mi) – deepest point
Features of the Ocean Basins mid-ocean ridge: mountain range on ocean floor
Features of the Ocean Basins rift valley: deep crevice in between mountain ranges
Features of the Ocean Basins coral reef: limestone structures containing shells of animals that surround volcanic islands
Landforms of the Ocean.
1) What is topography of the ocean?
Features of the Ocean Floor
Earth Science Spring The Water Planet Global ocean covers 97% of the earth’s surface. Global ocean divided into 3 major oceans: Atlantic Pacific.
The Seafloor and its Structures
Deep Seafloor Features Mapping the seafloor – Bathymetry- study and mapping of seafloor elevations – Techniques Early explorers measured depth with rope.
What lies at the bottom of the ocean?. Exploring the Ocean Standards: S6E3.c – Describe the composition, location, and subsurface topography of the.
Ocean Bottom Chapter 3. Will lead to unlocking some of the mysteries of the ocean and may give insight into Earth’s past.
Bathymetry of the Ocean Floor The ocean floor is mapped by SONAR. (Sound navigation and ranging) Depth = (time x 1500 m/sec)/2 (round trip) At 25 degrees.
EXPLORING THE OCEAN FLOOR pbs
Part 3: The Ocean Floor 1. Introduction Topography: The study or detailed description of the surface features of a region Compared to the continents,
Mapping the Ocean Floor
Exploring the Ocean Floor By: Laura Barrios, Uriel Flores, Edgar Gonzalez, Emmanuel Solis.
Warm Up What are the four minerals that compose salt water? 1. What are the four minerals that compose salt water? 2. What are the three reasons.
Oceanography cont.. Oceanography Basic Facts… The five major oceans/depths are Atlantic (3.92km), Indian (3.96km), Pacific (4.0km), Arctic (1.2km) and.
The Ocean Floor.
Earth’s Oceans Divisions of Ocean largest = Pacific half volume of Pacific = Atlantic 3 rd largest = Indian smallest = Arctic Southern = extends from Antarctica.
Exploring the Ocean. Why is the ocean difficult to study? 1.It is DEEP! 3.8 km (that’s twice as deep as the Grand Canyon) 2.It is DARK and COLD! (Only.
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