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Who proposed the 1912 continental-drift theory that helped lead to modern plate tectonics?
Answer
Alfred Wegener
What type of plate boundary forms when two tectonic plates slide horizontally past each other?
Answer
Transform boundary
Which 2011 earthquake and tsunami devastated northeastern Japan?
Answer
Tōhoku earthquake
What was the largest earthquake ever recorded by instruments, measured at magnitude 9.5?
Answer
1960 Valdivia earthquake
Which type of seismic wave arrives first at a recording station during an earthquake?
Answer
P wave
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What type of plate boundary forms when two tectonic plates slide horizontally past each other?
Answer
Transform boundary
Which 2011 earthquake and tsunami devastated northeastern Japan?
Answer
Tōhoku earthquake
What was the largest earthquake ever recorded by instruments, measured at magnitude 9.5?
Answer
1960 Valdivia earthquake
What is the name for the inclined earthquake zone marking a descending tectonic plate?
Answer
Wadati–Benioff zone
What is the boundary called where Earth’s crust meets the mantle?
Answer
Mohorovičić discontinuity
Which two tectonic plates meet along California’s San Andreas Fault?
Answer
Pacific and North American plates