1. MOTIVATION Watch titanic video
NOTICE THE EQUIPMENT AND TECHNOLOGY USED
DESCRIBE TECHNOLOGY IN VIDEO

2. MOTIVATION
Why was SCUBA not used to try and locate the titanic?

3. Why was SCUBA not used to locate the titanic?
The titanic was 2.5 miles deep, the crushing effects of deep-sea pressure and a limited air supply prevent scuba divers from attaining great depths.
Scientists used submersibles-steel hulled vehicles designed for underwater research. A submersibles thick hull(bottom of boat) and larger air supply enable researchers to dive deeper.
The TITANIC WAS LOCATED using submersibles
GUESS THE AIM??????

4. AIM: HOW WAS THE TITANIC LOCATED?
Instructional objectives
1. Explain how the titanic was finally located
2. Describe some of the technology used in locating titanic.
3. Identify other technologies used in underwater exploration

5. How well did people explore using the early submersibles?

6. How well did people explore using early submersibles?
In 1934, American oceanographer DR. WILLIAM BEEBE, reached a depth of 900 meters in a steel chamber called a bathysphere
In 1960 the swiss team of Auguste and Jacques Piccard made the deepest dive in a submersible to the bottom of the Mariana Trench(10,852 meters). In the BATHYSCAPHE

7. BATHYSCAPHE-Trieste late1950’s-1960
Jacques Piccard went meters deep or about 6.6 miles into the marianas trench
Deepest dive ever recorded

8. VOCABULARY Aquanaut-a person who explores under the oceans surface
Inner space-what is found beneath the oceans surface
Submersible-underwater vehicle or submarine
Robots-mechanical objects that are connected and controlled by a surface ship or submarine

9. How do modern submersibles explore the ocean floor?

10. Dr. Sylvia Earle 1979 Deepest solo dive to a depth of 380m
In a special jim suit that is tethered to a surface ship
Dr. Earle lives and teaches in Hawaii

11. ALVIN the submersible Modern submersible with advanced technology
Logged over 900 research dives

12. ROBOTS
Unmanned vehicles, called robots, are used for exploring in the deepest parts of the ocean. The robot Argo was tethered to a surface ship and used to photograph Titanic.
The robot Jason, tethered to the Alvin, photographed the Titanic’s interior.

13. Argo tethered robot (titanic) JASON tethered robot (research)
TETHERED ROBOTS
Argo tethered robot (titanic)
JASON tethered robot (research)

14. UNTETHERED ROBOTS
EXPLORER the robot
Crab robot

15. How is Ocean depth determined?
SONAR
Depth of sound wave x time divided by 2
D=s x t divided by 2
D=st/2
SOund NAvigation and Ranging
Actual speed of sound wave is 1454m/sec
Use the # 1500 for practical sense
SHOW ILLUSTRATION
ACTIVITY SHEET

16. Who located the final resting place of the TITANIC?

17. Who located the final resting place of the Titanic?
Dr. Robert Ballard in 1985 located the titanic 2.5 miles deep on the North Atlantic seafloor
He used sonar and robots to locate it
Alvin the submersible
Robots Jason and Argo were used to study the ship

18. SUMMARY
The development of advanced technology, in the form of submersibles, robot vehicles, and sonar equipment, has culminated in such achievements as finding the sunken Titanic 3600 meters deep.

19. EXIT QUIZ 1.Which scientist went underwater in the bathysphere?
A. Cousteau B. Earle C. Ballard D. Beebe?
2. Describe some equipment used to locate and videotape the Titanic in a few sentences.
3. why wasn’t SCUBA used to locate the Titanic?