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What are the types of plate tectonics?
There are three main types of plate tectonics: divergent boundaries, where plates move apart; convergent boundaries, where plates collide; and transform boundaries, where plates slide past each other horizontally. These movements create earthquakes, volcanic activity, and mountain formation.
How far do plate tectonics move in one year?
Plate tectonics move at a speed of about 2 to 10 centimeters per year, which is roughly the same rate at which human fingernails grow. This movement is driven by the slow flow of molten rock underneath the Earth's crust, causing the plates to drift over time.
What are evidence supporting plate tectonics?
* Identical fossils of a small reptile have been found in Africa and Soth America * Mountains in Europe and the USA were once part of a large mountain chain * Rocks found in Britain were formaed in desert conditions
How many kinds of boundaries are there in plate tectonics?
There are four transform boundaries divergent boundaries convergent boundaries a fourth boundary where the interactions are not clear and the boundaries are not well defined
When did alfred wegener discover pangaea?
Alfred Wegener proposed the theory of Pangaea, the supercontinent, in 1912 based on his ideas of continental drift. However, his theory was not widely accepted until after his death in 1930 when further evidence supported the idea of plate tectonics.
What are Plate tectonics evidence?
The theory of plate tectonics has succumbed to the newer theory of continental drift. Scientists believe this theory today due to three main factors. First, the continents appear to fit together. When the continental shelves, as opposed to just the continents, are placed together, the fit appears uncanny. Second, the distribution of fossils is consistent with continental drift. Lastly, glacial deposits once covered parts of the earth that are currently tropical.ANSWER: The plate tectonics theory is relatively new and formulated only in the 1960s. The evidence listed above in the first answer can only support the continental drift theory which was developed by Alfred Wegener in 1912. Evidence that can support the plate tectonics theory are the age, depth of oceanic sediments, volcanic activity, geothermal gradient, gravity anomalies, paleomagnetism and seismologic evidence. If you are answering an exam question on evidence supporting plate tectonics, evidence supporting continental drift theory should only come later in your answer and should not be given too much emphasis, for the plate tectonics theory involves more than just the continental crust drifting around and cannot support the main hypotheses of the plate tectonics theory.
What are the three key points of plate tectonics?
nobody cares but I cares
How are these three layers identified the core the mantel and the crust?
by the plate tectonics
What are the types of plate tectonics?
There are three main types of plate tectonics: divergent boundaries, where plates move apart; convergent boundaries, where plates collide; and transform boundaries, where plates slide past each other horizontally. These movements create earthquakes, volcanic activity, and mountain formation.
What are three scientific possible ways climate changes?
Greenhouse gasses, Solar output changes, Orbital change, Volcanic activity, Plate tectonics.
How far do plate tectonics move in one year?
Plate tectonics move at a speed of about 2 to 10 centimeters per year, which is roughly the same rate at which human fingernails grow. This movement is driven by the slow flow of molten rock underneath the Earth's crust, causing the plates to drift over time.
What is considered a scientific theory?
In science, a theory is something that is not fully proven, but has strong supporting evidence. Some common theories that are well known, and seen by most people as fact include; Evolution, Plate Tectonics, and Gravity. All three of these have enough evidence to be scientifically sound, but we have not yet given 100% proof to turn them from scientific theory into scientific law.
What are evidence supporting plate tectonics?
* Identical fossils of a small reptile have been found in Africa and Soth America * Mountains in Europe and the USA were once part of a large mountain chain * Rocks found in Britain were formaed in desert conditions
What are three good things plate tectonics provide for humans?
well, it provides more info for scientist (2) supports the idea of Wagner's idea (3) Spread of animals
Does plate tectonics occur on earths moon?
The surface of the moon shows no evidence of plate tectonics; to the contrary the numerous impact craters preserved on its surface show that it has been stable for most of its 4.5 billion year old history. Although there are no lithospheric plates on the moon, seismographs left by the Apollo astronauts indicate that the interior of the Moon does consist of distinct layers: a crust, a three-layered mantle and possibly a molten core. We have not yet had the opportunity to place seismographs are the other planets to discover details of their inner layering. However, studies of satellite measurements of surface topography and gravitational pull indicate some of the non-gaseous planets, like Mars, do indeed have a strong outermost layer (lithosphere) overlying a weaker mantle. However there is no evidence that these planetary lithospheres are currently broken into moving plates. Whether some form of plate tectonics was active earlier the history of some planets, such as Venus, is still debated.
How many kinds of boundaries are there in plate tectonics?
There are four transform boundaries divergent boundaries convergent boundaries a fourth boundary where the interactions are not clear and the boundaries are not well defined
Three ways a scientist studies earth's layers?
1.) Seismic waves, caused by earthquakes or massive man made explosions. 2.) VOLCANISM!! 3.) The study of plate tectonics, provides clues on temperatures, pressures, and densities necessary to cause plate motions!!
