Two statements that describe evidence that directly led to the development of the theory of plate tectonics? a) Sonar confirmed the presence of mid-ocean ridges. d) Seismic data showed that most earthquakes and volcanoes occur where crust is being formed or destroyed.
What is plate tectonic theory?
According to this theory, the earth's surface is separated by plates that move above the molten mantle. Over the plate borders, these plates interact with one another, causing friction.
What is seismic data?
Seismic surveys provide a scan of the earth's subsurface using reflected sound waves.
By knowing the speeds at which seismic waves move through rocks at various places and depths, we can learn about geologic formations on the earth. and describes the way an area will tremble during an earthquake.
Hence, options (a) and (d) are correct.
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