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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.
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How did harry hess's hypothsis explain seafloor movement?
It explained seafloor movement because he researched that hot/less dense material rises to Earths crust, at the Mid-Atlantic Ridge. At the hole the magma cools making new seafloor. He also found out that there were new rocks near the Mid-Atlantic Ridge and old ones farther away. Hess also theorized that this seafloor has to filter somewhere- this somewhere is called the subduction zone. The subduction zone is an area where old seafloor sinks and the plates melt it forms into magma, building pressure within the Earth. When there is too much pressure the Earth lets out this energy in Arcs, Volcanic islands, etc.
How did Harry Hess hypothesis explain seafloor spreading?
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.
Which was not included in the support for harry hess's hypothesis sea floor spreading?
Granitic strips in the ocean floor ... Novanet
Which was not included in the support for harry hess's hypothesis of sea-floor spreading?
One key piece of support that was not included in the initial support for Harry Hess's hypothesis of seafloor spreading was the mechanism of plate tectonics. This idea was developed and integrated into the theory of seafloor spreading by geologists like Robert Dietz and J. Tuzo Wilson at a later stage.
When did harry hess propose seafloor spreading?
Harry Hess proposed the idea of seafloor spreading in the early 1960s, with his initial proposal being presented in 1960. This concept revolutionized our understanding of plate tectonics and the movement of the Earth's lithosphere.
Who proposed the theory of seafloor spreading based on maps of the ocean floor?
The theory of seafloor spreading was proposed by Harry Hess, a geologist and Navy officer, in the early 1960s. He proposed that new oceanic crust is formed at mid-ocean ridges and then spreads outward. This theory helped to explain the mechanism behind continental drift and plate tectonics.
Why did Harry Hess map the ocean floor?
Harry Hess mapped the ocean floor to support his hypothesis of seafloor spreading, which proposed that new oceanic crust is formed at mid-ocean ridges and older crust is pushed away. His work aimed to provide evidence for the theory of plate tectonics, which revolutionized our understanding of continental drift and geological processes. By mapping the ocean floor, Hess sought to explain the distribution of geological features and the movement of tectonic plates. His research laid the groundwork for modern oceanography and geology.
What is the idea that continents have moved horizontally through the seafloor to their current locations?
seafloor spreading by Harry Hess
Why did people believe Harry Hess and not believe Alfred Wegener?
Harry Hess proposed the theory of seafloor spreading, which provided physical evidence for the movement of the Earth's crust. Alfred Wegener proposed the theory of continental drift, which lacked a mechanism to explain how continents moved. Hess's theory had more scientific support and evidence, leading to greater acceptance by the scientific community.
What was the two discovery Harry Hess?
The Seafloor Spreading Theory
Who discovered Seafloor Spreading?
Henry H. hess
What is the proponent of Seafloor spreading?
The proponent of seafloor spreading is primarily Harry Hess, an American geologist who proposed the theory in the early 1960s. He suggested that new oceanic crust is formed at mid-ocean ridges through volcanic activity, and as it moves away from the ridge, it gradually cools and becomes denser. This process helps explain the movement of tectonic plates and is a key component of the broader theory of plate tectonics. Seafloor spreading provides insights into the geological history of the Earth and the mechanisms behind continental drift.
