Earthquakes outline the plates. During the 1950s and early 1960s, scientists set up seismograph networks to see if enemy nations were testing atomic bombs. These seismographs also recorded all of the earthquakes around the planet. ... The lithosphere is divided into a dozen major and several minor plates (figure 2).
Answers & Comments
ANSWER:
It was proved by plate tectonic theory.
EXPLANATION:
Continental drift theory by wegener states that the Earth had only one continent called pangea.
Plate tectonic theory states that pangea was divided because of the Earth’s radioactive activities, particularly in its mantle.
Answer:
Earthquakes outline the plates. During the 1950s and early 1960s, scientists set up seismograph networks to see if enemy nations were testing atomic bombs. These seismographs also recorded all of the earthquakes around the planet. ... The lithosphere is divided into a dozen major and several minor plates (figure 2).