Seafloor spreading seafloor spreading 5 4 p.
The sea floor spreading theory powerpoint presentation.
Differentiate continental crust from oceanic crust and explain why the continental crust is older than the.
Enumerate and explain the evidences that support the sea floor spreading process.
Seafloor spreading theory hess dietz hypothesis 7.
This process that continually adds to the ocean floor is sea floor spreading.
3 sea floor spreading sonar a device that bounces sound waves off under water objects and then records the echoes of these sound waves.
The time it takes for the.
141 147 seafloor spreading until the 1950 s little was known about the ocean floor but after sonar was invented a complex ocean floor.
Mapping the mid ocean ridge the east pacific rise is just one part of the mid ocean ridge the longest chain of mountains in the world.
In the 1960s scientists found evidence that new.
The mid ocean ridge curves like the seams of a baseball along the sea floor extending into all of earth s oceans.
Sea floor spreading powerpoint 1.
During world war ii geologist harry hess became interested in mapping the ocean floor using sonar.
Powerpoint click to download the ms powerpoint file 34 mbytes pdf click to view or download the presentation in pdf 2 1 mbytes ht ml cl ick to view the presentation in html format.
Sea floor spreading enumerate and explain the initial and unusual observations that led to the formulation of the sea floor spreading hypothesis.
Sea floor spreading 1 sea floor spreading 2 sea floor spreading.
Most of the mountains in the mid ocean ridge lie hidden under hundreds of meters of.
Topic objectives for groupreporters c.
S eafloor spreading this presentation reviews the major features of the seafloor and harold hess original theory of seafloor spreading.
Powerpoint ppt presentation free to view.
The seafloor spreading theory powerpoint presentation.
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Mid ocean ridge the longest chain of mountains in the world these are divergent plate boundaries.
Seafloor spreading theory slideshare.
Mid ocean ridge the longest chain of mountains in the world these are divergent plate boundaries.
Seafloor spreading theory ppt.
27 evidence for sea floor spreading.
The molten material spreads out pushing older rock to both sides of the ridge.
In 1912 when alfred wegener proposed that the continents had once been joined together and had split apart the biggest weakness in his hypothesis was the.
At the mid ocean ridge molten material rises from the mantle and erupts.
