What causes the tectonic plates to move group of answer choices?
Geologists have hypothesized that the movement of tectonic plates is related to convection currents in the earth’s mantle. Tremendous heat and pressure within the earth cause the hot magma to flow in convection currents. These currents cause the movement of the tectonic plates that make up the earth’s crust.
Which causes Earth’s tectonic plates to move a group of answer choices?
The force that causes most of the plate movement is thermal convection, where heat from the Earth’s interior causes currents of hot rising magma and cooler sinking magma to flow, moving the plates of the crust along with them.
What best describes the theory of plate tectonics quizlet?
The theory of plate tectonics states that Earth’s surface is made of rigid slabs of rock, or plates, that move with respect to each other. Earth’s tectonic plates are large pieces of lithosphere. These lithospheric plates fit together like the pieces of a giant jigsaw puzzle.
What does the theory of plate tectonics help scientists to explain?
The theory of plate tectonics explains most of the features of Earth’s surface. It explains why earthquakes, volcanoes and mountain ranges are where they are. It explains where to find some mineral resources. Plate tectonics is the key that unlocks many of the mysteries of our amazing planet.
What is the importance of magnetic reversals to the theory of plate tectonics?
What is the importance of magnetic reversals to the theory of plate tectonics? Magnetic reversals provide evidence for seafloor spreading. centrifugal forces from the rotation of the Earth. The earth’s layers can also be classified according to their rheology, based on their ability to deform and flow.
How do driving forces affect plate movement?
After subducted, cool, dense lithosphere sinks into the mantle under its own weight. This helps to pull the rest of the plate down with it. resisting forces The main effect of the underlying mantle is to produce a shearing or frictional force resisting the motion of lithospheric plates.
What is the result of seafloor spreading?
Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle’s convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor. Eventually, the crust cracks.