In particular, four major scientific developments spurred the formulation of the plate-tectonics theory: (1)
demonstration of the ruggedness and youth of the ocean floor; (2) confirmation of repeated reversals of the Earth magnetic field in the geologic past; (3) emergence of the seafloor-spreading hypothesis and
…
What technological advances led to the theory of plate tectonics?
By explaining both the zebra-like magnetic striping and the construction of the mid-ocean ridge system,
the seafloor spreading hypothesis (SFS)
quickly gained converts and represented another major advance in the development of the plate-tectonics theory.
What helped scientists develop the theory of plate tectonics?
Evidence that led to the development of plate tectonic theory in the 1960s came primarily from
new data from the sea floor, including topography and the magnetism of rocks
.
How has new technology strengthened the theory of plate tectonics?
New technology has strengthened the theory of plate tectonics
by explaining how the continents move and how fast they move
. … The plate tectonics theory states that Earth’s surface is made up of rigid slabs of rock, or plates, that move with respect to each other.
What 3 things support the theory of plate tectonics?
There is variety of evidence that supports the claims that plate tectonics accounts for
(1) the distribution of fossils on different continents
, (2) the occurrence of earthquakes, and (3) continental and ocean floor features including mountains, volcanoes, faults, and trenches.
How did people find out about plate tectonics?
Evidence from fossils, glaciers, and complementary coastlines
helps reveal how the plates once fit together. … Finding identical or similar fossils in areas separated by vast distances were some of the first clues that scientists used to reconstruct past plate movement.
Why do tectonic plates move?
The heat from radioactive processes within the planet’s interior causes the plates
to move, sometimes toward and sometimes away from each other. This movement is called plate motion, or tectonic shift.
Who is the father of plate tectonic theory?
The “Father of Plate Tectonics”,
Alfred Wegener
proposed “Continental Drift” in 1912, but was ridiculed by fellow scientists. It would take another 50 years for the concept to be accepted.
Who postulated the concept of plate tectonics?
German meteorologist Alfred Wegener
is often credited as the first to develop a theory of plate tectonics, in the form of continental drift.
How many tectonic plates are there?
how many tectonic plates are there? There are major, minor and micro tectonic plates. There are
seven major plates
: African, Antarctic, Eurasian, Indo-Australian, North American, Pacific and South American.
What technology is used for plate tectonics?
plate movement with geodesy
Recently, one of the most effective ways of studying plate movement is through
GPS satellites
.
What is the theory of plate tectonics Class 9?
Plate tectonics is the
theory that Earth’s outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core
. The plates act like a hard and rigid shell compared to Earth’s mantle. This strong outer layer is called the lithosphere.
What is best explained by plate tectonics?
The theory of plate tectonics states that the Earth’s solid outer crust, the lithosphere, is
separated into plates
that move over the asthenosphere, the molten upper portion of the mantle. Oceanic and continental plates come together, spread apart, and interact at boundaries all over the planet.
What are the 5 evidences of continental drift theory?
They based their idea of continental drift on several lines of evidence:
fit of the continents, paleoclimate indicators, truncated geologic features, and fossils
.
What are the 3 causes of plate movement?
Mantle dynamics, gravity, and Earth’s rotation taken
altogether causes the plate movements. However, convectional currents are the general thought for the motion.
How does the plate tectonics theory affect people’s lives?
Plate tectonics affects humans in several important ways. What would Earth be like without plate tectonics? We’d have many fewer
earthquakes
and much less volcanism, fewer mountains, and probably no deep-sea trenches. … In other words, the Earth would be a much different place.
