landsat satellite
Sonar is used to map the seafloor.
landsat satellite people in mrs dorchs class
It was sonar, directing pings of sound toward the ocean floor and measuring how long before the echos returned. Knowing the speed of sound in ocean water, they could then calculate the distances.
While Wegner's theory of continental drift assumed that continents plowed through and over oceanic crust, his basic ideas are still upheld today. As a result of submarines and radar technology used in WWII, scientists were better able to map the seafloor. In doing so they discovered the seafloor's topography, age, magnetism, and the Mid-Atlantic Ridge. After discovering that the seafloor did spread apart and that continents moved, Wegner's theory gradually became accepted.
An isochron is a line on a map that connects points that have the same age. An isochron map of the ocean floor supports the theory of seafloor spreading because it shows the older rock near the deep sea trenches and the younger rocks near ocean ridges.
Sonar
Sonar is used to map the seafloor.
landsat satellite people in mrs dorchs class
landsat satellite people in mrs dorchs class
It was sonar, directing pings of sound toward the ocean floor and measuring how long before the echos returned. Knowing the speed of sound in ocean water, they could then calculate the distances.
Often ships will use sonar to map the seafloor.
The map key (legenend) is used to help the reader understand the relative distances,features,and sites printed on the map
A map used by scientists from a satellite view that shows land features
Bells, rope, compass, map, and telescope
symbol
A physical map is a map that shows physical features such as mountains and rivers
Mapping the Ocean Floor with Echo Sounding is the key method scientists use to map the seafloor today