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What is something not proven as fact for plate tectonics?
One aspect not fully proven for plate tectonics is the exact mechanism driving the movement of tectonic plates. While it is widely accepted that convection currents in the mantle play a role, the precise details and interactions leading to plate movement are still an active area of research and debate.
Which type of heat transfer sets up currents in fluids?
The current in the fluid is the result of a difference in temperature at different depths.It's called convection, and it does the transferring of heat from the bottom to the topof the fluid.What sets up the convection currents is whatever it was that added heat to thebottom of it. That could have been conduction, radiation, or a chemical process.
What has a seismology taught us about the earth interior?
Through Seismology, or through studying earthquakes, we have been able to find that the Earth's interior is composed of three layers: Crust, Mantle and Core. The core is further divided into outer core and inner core.
Why do plates separates from each other?
From the creation of crust by magma at divergent plate boundaries. It has been proposed that when the above crust is created, it creates in the form of an upward pointing wedge of basalt and this wedge forces the plates apart. For a more extensive discussion of this proposal see http://members.tripod.com/~charles_W/ridge.html
Are slivers of oceanic crust and underlying mantle that may be emplaced on the continents at subduction zones?
Yes, these slivers of oceanic crust and underlying mantle are known as ophiolites. Ophiolites are sequences of rocks that represent ancient oceanic lithosphere that have been tectonically emplaced onto continental crust at subduction zones. They provide valuable insights into processes occurring at mid-ocean ridges and in ocean basins.
How has earthquake data been used to explore the size of convection currents in the mantle?
Earthquake data, particularly seismic waves, have been used to study the structure of Earth's interior. By analyzing the way seismic waves travel through the mantle, scientists can infer information about the size and movement of convection currents. Variations in wave velocities and patterns help scientists map out the flow of heat and material within the mantle, providing insights into the size and behavior of convection currents.
What is true about convection in Earth's mantle and tectonic plate motion?
Within the earth's mantle, which is semi-molten, there are convection currents caused by differences in temperature. These currents apply force from beneath to the plates of the earth's crust. The plates move slightly, which causes the very slow change in the shapes of our continents and oceans (and also causes occasional earthquakes).All of this is true about convection currents, however there is significant dispute as to whether the tectonic plates are actually moved by convection currents. It could equally be true that "There are no convection currents in the Earth's mantle". Although is is the best theory going, there has been insufficient evidence that these currents actually exist. Alternative theories include:Continental drag: As a plate is subducted beneath another, the weight of the sinking end pulls the rest of the plate with it. This causes continental drift. The biggest flaw is that not all plates even have destructive boundaries.Hotspots: Hotspots themselves are responsible for continental drift (a similar sort of idea to convection currents, but we do know that hotspots exist). The biggest flaw is that not all plates have a hotspot on them.
Which has not been proposed as a mechanism of plate motions?
The idea that plate motions are caused by electromagnetic forces has not been widely proposed as a mechanism of plate motions. The most accepted mechanism is the theory of plate tectonics, which suggests that plate motions result from the movement of convection currents in the Earth's mantle. Other proposed mechanisms include ridge push, slab pull, and mantle plumes.
Where was the continental drift?
Continental drift occurs under the earths crust by convection currents in the mantle which drives the plates. It has been happening since the development of the earths core and is happening now and until the end of the earth.
Which is convection of the Earth's mantle most directly related?
tectonic plate motionAs a result these test have been tested mostly in the hottest continent Africa, by African scientist and more which the hottest country is Djibouti," another Somali speaking country in Eastern Africa.
How long have convection currents been moving the Earth's surface?
Approximately 3 billion (3,000,000,000) years
What are some physical processes that occur inside of the earth and what has been theri effect?
Some physical processes inside the Earth include convection currents in the mantle, plate tectonics, and volcanic eruptions. These processes have effects such as the formation of mountains, earthquakes, and the recycling of Earth's crust.
What is the role of gravity in creating convection currents?
Gravity plays a crucial role in creating convection currents by pulling denser, cooler fluid downwards and pushing lighter, warmer fluid upwards. This sets in motion the circulation of fluid, which drives convection currents in liquids and gases.
What is something not proven as fact for plate tectonics?
One aspect not fully proven for plate tectonics is the exact mechanism driving the movement of tectonic plates. While it is widely accepted that convection currents in the mantle play a role, the precise details and interactions leading to plate movement are still an active area of research and debate.
Which type of heat transfer sets up currents in fluids?
The current in the fluid is the result of a difference in temperature at different depths.It's called convection, and it does the transferring of heat from the bottom to the topof the fluid.What sets up the convection currents is whatever it was that added heat to thebottom of it. That could have been conduction, radiation, or a chemical process.
Without convection currents what would happen?
Without convection currents, heat transfer in a fluid would be much slower and less efficient. This could lead to uneven temperature distribution in the fluid, with hotter regions at the top and colder regions at the bottom. It could also hinder the circulation of nutrients in bodies of water and air in the atmosphere.
What is the plate techtonic theory?
The plate tectonic theory states that new Earth crust is being formed while old crust descends back into the mantle. Uneven heating in the mantle causes convection which keeps the crust in motion. The constant movement of Earth's plates are the result of the three types of boundaries, divergent, convergent, and transform, and the convection in the mantle.
