Harry hess' hypothesis was hot/less dense material rises up the Earth's crust toward the mid-ocean ridges. When the seafloor breaks apart, magma is forced upward and through the cracks. It cools, and becomes a new seafloor. When it moves away from the mid-ocean ridge, it becomes denser and sinks. This helps form ridges.
Harry hess' hypothesis was hot/less dense material rises up the Earth's crust toward the mid-ocean ridges. When the seafloor breaks apart, magma is forced upward and through the cracks. It cools, and becomes a new seafloor. When it moves away from the mid-ocean ridge, it becomes denser and sinks. This helps form ridges.
Harry Hess hypothesized that the sea floor was spreading. He explained it through the phenomena of the youngest rocks that are found only at the mid-ocean ridges. These rocks then, get progressively older when moving away from the ridge.
Harry Hess used evidence from magnetic stripes and molten material. He also used drilling samples.
His theory was to figure out what was seafloor spreading
the right way
Henry H. hess
1960 (although Hess' paper built upon Alfred Wegener's theory of continental drift , proposed in 1915).
Three evidence that supports Harry Hess theory of Seafloor Spreading is; 1. Paleomagnetism. 2. Plate Tectonics. 3. Polar Wondering and Polar Reversal.
Harry Hess
Harry Hammond Hess, a professor of geology at Princeton University, was very influential in setting the stage for the emerging plate-tectonics theory in the early 1960s. He believed in many of the observations Wegener used in defending his theory of continental drift, but he had very different views about large-scale movements of the Earth.Hess' research ultimately resulted in a ground-breaking hypothesis that later would be called seafloor spreading.
Henry H. hess
The Seafloor Spreading Theory was proposed by Harry Hess.
The Seafloor Spreading Theory
seafloor spreading by Harry Hess
It was proposed in the 1960s by Harry H. Hess.
Harry Hess helped develop the idea of seafloor spreading.
1960 (although Hess' paper built upon Alfred Wegener's theory of continental drift , proposed in 1915).
Three evidence that supports Harry Hess theory of Seafloor Spreading is; 1. Paleomagnetism. 2. Plate Tectonics. 3. Polar Wondering and Polar Reversal.
Seafloor spreading.
Harry Hess
200 BC
Harry Hess hypothesized that the sea floor was spreading. He explained it through the phenomena of the youngest rocks that are found only at the mid-ocean ridges. These rocks then, get progressively older when moving away from the ridge.