PPT-The Ocean Floor Seeing by SONAR

SO und N avigation A nd R anging A ship sends sound waves to the ocean floor The sound waves bounce off the floor and back to the ship The deeper the water the longer it takes for the sound waves to return. Rockefeller Jr Memorial PKWY Big Hole NB Cowpens NB Fort Donelson NB Fort Necessity NB Moores Creek NB Petersburg NB Stones River NB Tupelo NB Wilsons Creek NB Kennesaw Mountain NBP Richmond NBP Brices Cross Roads NBS Chickamauga and Chattanooga NMP While written to incorporate computer technology the lesson can be easily adapted to paper and pen Lesson Objective Students will compose a series of slides based on the exhibits at OC The teacher may select one type of exhibit such as those that co Ocean Zones. Which Zone?. 1. Each . group. . will be given a set of words that relate to the different zones of the ocean.. 2. At your table you will . try and place . your words in the correct zone.. Check your notes for . key ideas!. 1. Mid-Ocean Ridges.  . . An . underwater mountain . range stretching all over Earth.. . Scientists . used sonar to map the ocean . floor. Mapping the mid-ocean ridge made scientists more curious about what is happening . Floor . --subsurface topography--. Ch. 13, section 2. (before the 1900’s scientists thought the ocean floor was completely flat). Sonar. (sound navigation and ranging). --invented during WWI--. to find depth: use the formula: . What is the standard?. S6E3. Students will recognize the significant role of water in earth processes. . What is the element?. c. Describe the composition, location, and subsurface topography of the world’s oceans. . 8 September 2014. Tallest Mountain on Earth. Mauna Kea Mount Everest. Seafloor is Dynamic. Mariana Trench: deepest part of the ocean (11,000m). Average ocean depth ≈ 3,700 meters (m). Seafloor is Dynamic. A. nd . R. anging . What is a Sonar?. A Sonar is a system that uses transmitted and reflected underwater objects or measure the distances underwater. . What is it’s Purpose?. It has been used form submarine and mine detection, depth detection , commercial fishing, driving safety and communication at sea. . Lead line mapping. Lead line mapping was the earliest form of seafloor mapping; this technique was used in ancient Egypt.. A rope with a weight on the bottom was marked at different “fathoms” and dropped overboard until it hit the sea floor.. UNCLASSIFIED. UNCLASSIFIED. UNCLASSIFIED. UNCLASSIFIED. UNCLASSIFIED. Topics. What is sonar. Snell’s Law. Factors for ranges/how it is measured. M. ilitary . history of sonar. Passive sonar. - types . Jackie Rainer. The Issue. SONAR is dangerous to the health and well-being of marine mammals. The Navy should refrain from using it where mammals are known to congregate.. Marine Mammals. 128 species. Plate tectonics review. Earth’s lithosphere is divided into large tectonic plates. They are constantly in very slow, motion.. Plate tectonics review. ____________ pushes the tectonic plates apart in sea floor spreading. This causes the motion of the plates.. Let\'s dig in and learn how to choose the best floor tiles to improve your home\'s aesthetics and practicality. Explore Here! The Vast World . Ocean. Area of Continents and Oceans. Seventy one percent (71%) of the globe is covered with oceans or seas.. Continents and islands compose the remaining twenty nine percent (29 %)..