How was the Titanic Found?. Objectives Students will be able to explain how the Titanic was located. Describe some of the technology used in locating.

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Presentation transcript:

How was the Titanic Found?

Objectives Students will be able to explain how the Titanic was located. Describe some of the technology used in locating the titanic. Identify other technologies used in underwater exploration.

Motivation Why were scuba divers not used to locate the resting place of the Titanic?

AIM How was the Titanic located? Using sonar and submersibles Dr. William Beebe reached a depth of 900 meters in a steel chamber called a Bathysphere ( fits 2 people). In 1960 a Swiss team of Auguste and Jacques Piccard, made the deepest dive in a submersible (bathyscaphe) to the bottom of the Mariana Trench (10,852 meters- 4 hrs.). Alvin is a submersible that has logged in over 1000 dives. It holds a crew of 3. Dr. Sylvia Earle holds the record for the deepest solo dive- 380 meters. (Jim Suit)

Beebe’s Bathysphere

The Jim Suit

How do Modern Submersibles Explore the Ocean Floor? Using unmanned vehicles called Robots. Using personal submersibles. Using high tech submersibles specially outfitted to withstand the cold temperatures and high pressure of the deep ocean. Using Sonar (sound navigation and ranging).

Alvin

Sonar Sonar stands for sound navigation and ranging. Sonar uses a beam of sound waves and directs them downward. After the sound wave hits the bottom of the ocean (ocean floor), or an object, it will bounce off and return back causing an echo. This is then recorded on a depth recorder on the ship. Some marine organisms use Echolocation, which is a form of sonar (dolphins, whales, porpoises).

Sonar

Summary The development of advanced technology, in the form of submersibles, robot vehicles, and sonar equipment has opened up the fields of Marine Biology and Oceanography in a way we could never have imagined!

HW Study for exam on Chapter 1. Review powerpoints. Review homework questions. Exam is 25 questions (multiple choice, fill-ins, and short answer).