All Categories MCQs
Topic Notes: All Categories
General Description
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
70391
What is the term for a volcano that has not erupted recently but may do so in the future?
Answer:
Dormant
A dormant volcano has not erupted in recent history but retains the potential for future activity, distinguishing it from active or extinct volcanoes.
70392
Which earthquake in 2011 caused a devastating tsunami in Japan?
Answer:
Tohoku earthquake
The 9.0-magnitude Tohoku earthquake in March 2011 triggered a massive tsunami, causing over 15,000 deaths and the Fukushima nuclear disaster in Japan.
70393
What is the primary gas emitted during most volcanic eruptions?
Answer:
Sulfur dioxide
Sulfur dioxide is a primary gas emitted during volcanic eruptions, contributing to acid rain and atmospheric cooling by forming aerosols that reflect sunlight.
70394
Which volcano in Indonesia erupted in 2018, triggering a tsunami?
Answer:
Anak Krakatau
Anak Krakatau’s 2018 eruption caused a flank collapse, triggering a tsunami that killed over 400 people in Indonesia, demonstrating the secondary hazards of volcanic activity.
70395
Which type of fault is most likely to generate large earthquakes?
Answer:
Transform fault
Transform faults, where plates slide past each other horizontally, are associated with large earthquakes, as seen along the San Andreas Fault in California.
70396
What is the name of the lines connecting places with equal earthquake intensity?
Answer:
Isoseismic lines
Isoseismic lines connect locations experiencing the same earthquake intensity, as measured by scales like the Mercalli. They help map the impact of seismic events.
70397
Which volcano in Washington, USA, erupted catastrophically in 1980?
Answer:
Mount St. Helens
Mount St. Helens erupted in May 1980, causing the deadliest and most destructive volcanic event in U.S. history, killing 57 people and devastating the surrounding area.
70398
What is the primary cause of tsunamis associated with earthquakes?
Answer:
Seafloor displacement
Tsunamis are often caused by seafloor displacement during underwater earthquakes, which moves large volumes of water, generating powerful waves that devastate coastlines.
70399
Which volcanic eruption in 2021 occurred in the Canary Islands?
Answer:
Cumbre Vieja
Cumbre Vieja on La Palma, Canary Islands, erupted in September 2021, destroying thousands of homes and creating new land as lava flowed into the ocean.
70400
What type of volcano is characterized by gentle slopes and fluid lava flows?
Answer:
Shield volcano
Shield volcanoes, like Mauna Loa in Hawaii, have gentle slopes due to fluid basaltic lava flows that spread widely, creating broad, flattened structures.