Describe the floor of the ocean. You may use words and diagrams.
Harry Hess was a Naval Scientist. In the 1950s he was in command of a United States Navy ship equipped with a device called Sonar. Sonar devices send and receive sound waves through the water in order to locate other ships and navigate underwater. It is especially useful for mapping the floor of the ocean. As Hess created maps of the Pacific Ocean floor he noticed several underwater geologic features.
Skip ahead in the following video to 1:20 to see an explanation of how sonar works.
Procedures
Part A
Part B
Mid Ocean Ridge
Trench
Trench
Discuss the following in a group
MS-ESS2-2. Construct an explanation based on evidence for how geoscience processes have changed Earth's surface at varying time and spatial scales.
MS-ESS2-3 - Analyze and interpret data on the distribution of fossils and rocks, continental shapes, and seafloor structures to provide evidence of the past plate motions.