Who were Hess and Dietz and what did they propose?
Who were Hess and Dietz and what did they propose?
The idea that the seafloor itself moves and also carries the continents with it as it spreads from a central rift axis was proposed by Harold Hammond Hess from Princeton University and Robert Dietz of the U.S. Naval Electronics Laboratory in San Diego in the 1960s. The phenomenon is known today as plate tectonics.
What two discoveries did Robert Dietz?
Dietz’s discovery in 1952 of the first fracture zone in the Pacific, which he related to deformation of the Earth’s crust, led him to hypothesize that new crustal material is formed at oceanic ridges and spreads outward at a rate of several centimetres per year. Subsequent work confirmed this suggestion.
What did Robert Dietz?
Robert Sinclair Dietz (September 14, 1914 – May 19, 1995) was a scientist with the US Coast and Geodetic Survey. Dietz was a marine geologist, geophysicist and oceanographer who conducted pioneering research along with Harry Hammond Hess concerning seafloor spreading, published as early as 1960–1961.
Who is the American geologist who introduced the concept of seafloor spreading together with Robert?
Robert S. Dietz
Robert S. Dietz, whose studies of the ocean floor helped set the stage for confirmation of the geological theory of continental drift, died on Friday at his home in Tempe, Ariz. He was 80.
Who proposed the theory of seafloor spreading?
Harry Hess
Harry Hess: One of the Discoverers of Seafloor Spreading.
What is the theory of seafloor spreading?
Seafloor spreading is a geologic process in which tectonic plates—large slabs of Earth’s lithosphere—split apart from each other. As tectonic plates slowly move away from each other, heat from the mantle’s convection currents makes the crust more plastic and less dense.
Is the Earth expanding?
Combining the expansion rates of land part and oceanic part, we conclude that the Earth is expanding at a rate of 0.35 ± 0.47 mm/a in recent two decades. If the Earth expands at this rate, then the altimetry-observed SLR can be well explained.
Who coined the term seafloor spreading?
Harry H. Hess
The seafloor spreading hypothesis was proposed by the American geophysicist Harry H. Hess in 1960.
What is the contribution of Harry Hess and Robert Dietz in the plate tectonic theory?
* In 1960, Harry H. Hess & Robert S. Dietz proposed a theory of Sea-Floor Spreading Sea-floor spreading is the idea that the movement of oceanic crustal material is the result or a mechanism of upwelling magma along a system of mid-oceanic ridges and the pull of gravity at the other end of the plate.
Who came up with the theory of seafloor spreading?
What are 3 types of evidence for seafloor spreading?
What three types of evidence provided support for the theory of sea floor spreading? eruptions of molten material, magnetic stripes in the rock of the ocean floor, and the ages of the rocks themselves.
What are the three types of seafloor spreading?
There are three types of plate-plate interactions based upon relative motion: convergent, where plates collide, divergent, where plates separate, and transform motion, where plates simply slide past each other.
Who is the author of the theory of multiple intelligences?
This model was proposed by Howard Gardner in his 1983 book Frames of Mind: The Theory of Multiple Intelligences. Gardner articulated seven criteria for a behavior to be considered an intelligence.
What does Howard Gardner mean by multiple intelligences?
Gardner defines intelligence as a “biopsychological potential to process information that can be activated in a cultural setting to solve problems or create products that are of value in a culture” (Gardner, 2000, p.28). 8 Intelligences – Theory of Multiple Intelligences Explained – Dr. Howard Gardner
Is the theory of multiple intelligences a pseudoscience?
Gardner has denied that multiple intelligences are learning styles and agrees that the idea of learning styles is incoherent and lacking in empirical evidence. The theory of multiple intelligences is often cited as an example of pseudoscience because it lacks empirical evidence or falsifiability.
Is there any empirical evidence for multiple intelligences?
Gardner states that “while Multiple Intelligences theory is consistent with much empirical evidence, it has not been subjected to strong experimental tests Within the area of education, the applications of the theory are currently being examined in many projects.