The first modern breakthrough in sea floor mapping came with the use of underwater sound projectors, called "sonar", which was first used in World War I. By the 1920s, the Coast and Geodetic Survey (an ancestor of the National Oceanic and Atmospheric Administration's National Ocean Service) was using sonar to map deep water. Mapping the seafloor using a sonar array mounted on the hull of a research vessel has advantages. Bathymetry is the measurement of ocean depths and the charting of the shape or topography of the ocean floor. The map serves as a tool for performing scientific, engineering, marine geophysical and environmental studies, that are required in the development of energy and marine resources. Objective: Students will draw contour lines based on NOAA soundings on a nautical … In this activity, we explore the ocean basins and the sea floor and discuss the different processes that influence their shapes, and how their shapes may influence different processes. Oc Geo 103 Lab 2. Learning Ocean Science through Ocean Exploration Section 2: Mapping the Ocean Floor: Bathymetry Seamount Ridge/bank Rift/mid-ocean ridge Continental shelf 1 bacKground inFormation This activity serves two purposes: it introduces your students to contour maps—both bathymetric and topographic—and it introduces them to the geologic One reason is that rivers flowing into the Atlantic cover more land and bring more sediment than those flowing into the Pacific. On a separate sheet answer the questions . Title: Sonar Mapping of the Ocean Floor. Ridges, trenches, mountains, continental shelves, continental slopes, and islands are all depicted. Bathymetry, the shape of the ocean floor, is largely a result of a process called plate tectonics. On the world map provided on the following page, draw the global mid-ocean ridge system in red. It’s also critical to the placement of undersea cables and offshore wind farms and to identifying areas that need protection from human activity. To map the ocean floor we need to know the depth at a number of places. The process that continually adds new material to the ocean floor is called Sea Floor Spreading 9. 256 Chapter 9 The Process of Sea-Floor Spreading The new map of the ocean floor aroused the curiosity of many scien- Description: Draw a map of your town (simple square, circle, oval shape etc.). Represent the topography or physical features on land and on the ocean floor with easy DIY shaving cream paint. Students use a simple calculation to determine the depth of the ocean floor at 15 points from Miami Beach eastward to the wreck of the SS Sapona in the Bahama Islands. Lab Activity – Contour of the Ocean Floor Name: _____ By means of echo sounding and sonar, scientists have been able to map the shape and relief of the ocean floor. This actually led to research on the ocean floor that would help explain the movement of the continents. Es 106 Laboratory 3. Since their development in the 1960s, AUVs have been key players in ocean exploration. zOceanic Trenches - deep trenches along the margins of continents, particularly surrounding the Pacific Ocean. National Strategy for Mapping, Exploring, and Characterizing the U.S. EEZ. Mountain ranges in South America and Africa line up Trenches are the deepest parts of the ocean. Study the shapes of the contour lines, then identify and label features on the maps. On the map, rocks with reverse magnetic polarity are represented by white bands and those with normal polarity by gray bands. 4. Mapping, exploring, and characterizing the U.S. EEZ is necessary for a systematic and efficient approach to understanding our resources. Contact Share RV Investigator . Display the Ocean Conveyor Belt cartoon from the Resource Carousel. National Science Standards • Lithospheric plates on the scales of continents and oceans constantly move at rates of centimeters per year in response to movements in the mantle. The speed of sound in sea water is about 1 ,507 meters per second. After an introduction in which students try to identify hidden objects by the sounds they make when shaken in a box, students use string to map a model ocean floor by taking depth readings to … Before the 19th century, the depths of the open ocean were largely a matter of speculation, and most people thought that the ocean floor was relatively flat and featureless. Students map a section of the ocean floor. The data . Facts and Figures Find links to additional activities and have students monitor phenomena that affects Earth and its residents. Mapping The Ocean Floor Worksheet Page 1. Review And Reinforce. See also Suncorp Broncos Seating Map. Have your students use Google Earth to study the underwater features of our planet. The water that issues from seafloor hydrothermal vents consists mostly of sea water drawn into the hydrothermal system close to the volcanic edifice … 4. Other Falkor sonar systems are designed to characterize fish and plankton assemblages, to measure currents, and to create images of the rock and sediment patterns found beneath the seafloor. Ocean Floor Mapping. This activity leads students through a process of creating a model of the ocean floor, taking depth “soundings,” entering data into an Excel spreadsheet, and then creating a 3-D map of their ocean floor in Excel. Plate Tectonics Mapping. Content. Tidal energy. Drain The Ocean Questions 1 Light Can Only Penetrate A Feet. We love do-able and simple geology for kids! Mapping World Plates helps students connect topography, earthquakes, volcanoes, and plates. What most likely is that deeper part? old ocean floor sinks back into the ground . Mapping the Ocean Floor . 2. This method of seafloor mapping is called echosounding. The California Seafloor Mapping Program (CSMP) is a cooperative program to create a comprehensive coastal/marine geologic and habitat base map series for all of California's State waters. Quiz Worksheet Evidence For The Mechanism Of Continental Drift. Name of Student: Date: Background Information: The term sonar is an American term first used during World War II; it is an acronym for . Ocean going vessels mapping the ocean floor provided data about the features of the ocean basin, including the discovery of mid-ocean ridges. Now, AUVs also protect our ocean through their use in military surveillance. General Science 1110l Lab 9 Sea Floor Spreading. The exact patterns depend on whether Plate tectonics is the unifying theory that explains the past and current movements of the rocks at Earth’s surface and provides a coherent account of its geological history. The sound bounces back to the ship at the same angle and is picked up by a receiver. Finish your ocean floor map graph and analysis. Define on a whiteboard the terms below, creating a key using a different color to represent each term. 1 Table 1. The data in the table below represents various measurements of the depth of the Atlantic Ocean between Cape May, New Jersey and Cape Roca, Portugal. We’re working to put our seafloor on the map through continuous data collection. Explain that geologists and oceanographers often use different terms for ocean floor formations and terrestrial formations. DEVELOPED BY: Kenneth A. Nagel, Apex High School, Academy of Information Technology, Apex NC, 2011 Naval Historical Foundation Teacher Fellowship . During this activity, you will use this method to construct a map for two diferent regions of the ocean floor. In this activity, you will map objects on a simulated ocean floor using a motion detector that works very similarly to the sonar systems used to detect submarines. Procedures: Part 1: Atlantic Profile 1. The bumps, too small to be seen, can be measured by a radar altimeter aboard a satellite. What they are seeing is not simply the result of a photograph from space; it’s a bathymetric map constructed from radar data collected on satellites and echo sounder data collected from ships. Sonar, which is short for sound navigation ranging, is the name given to this echo sounding system. This lab works equally well using graphing calculators with the probes. that follow. The seabed (also known as the seafloor, sea floor, ocean floor, and ocean bottom) is the bottom of the ocean.All floors of the ocean are known as 'seabeds'. The Shape Of Ocean Basins And Bathymetry Sea Floor. The intent is for students to use their prior knowledge of sea floor topography,graphing longitude and latitude, and the metric system. Use for 5 minutes a day. Scientific expeditions examine rock and sediment cores obtained from the ocean floor to learn about the earth's basic processes. Ask them if they recognize any patterns. Floor, was the first complete map of Earth’s ocean floor. If you want to see mapping the ocean floor in action in real life, here’s a video. This zone is the only part of the ocean with plants and although it is relatively small, it contains most of the ocean's life. ACTIVITY NAME: Ocean Floor Mapping Worksheet . For this set of data, the depth has already been calculated for you. Tides result from the gravitational attraction of the Earth-Moon-Sun system acting on the Earth's oceans. As students become aware of plate movements, they begin to identify patterns that set the stage for deeper understanding of a very complex topic. The study of mid-ocean ridges helped establish the theory of plate tectonics in the 1960s. 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