Final answer:
The emergence and acceptance of plate tectonics as a theory of global-scale earth processes involved the recognition of evidence such as matching coastlines, seismic activity patterns, and the discovery of mid-ocean ridges.
Step-by-step explanation:
Plate tectonics, a fundamental theory in geology, describes the movement of Earth's lithospheric plates, explaining various geological phenomena. The theory's emergence and acceptance were gradual and based on accumulating evidence. Scientists observed that the coastlines of South America and Africa seemed to fit together like puzzle pieces, suggesting past connections. Additionally, seismic activity patterns, such as earthquakes and volcanic eruptions, were concentrated along plate boundaries, providing further support. The discovery of mid-ocean ridges with volcanic activity supported the idea of seafloor spreading, reinforcing the plate tectonics model.
Furthermore, the identification of magnetic striping on the ocean floor provided crucial evidence. As magma rises and solidifies at mid-ocean ridges, it captures Earth's magnetic field orientation. Alternating magnetic stripes on the ocean floor indicated periods of magnetic reversal, aligning with the prediction of seafloor spreading. This comprehensive collection of evidence led to the widespread acceptance of plate tectonics as a unifying theory for global-scale earth processes, transforming our understanding of the dynamic nature of Earth's lithosphere.
Complete question:
"Which statement(s) on plate tectonics accurately describes the emergence and acceptance of this theory of global-scale earth processes? Group of answer choices."