Earthquake Science and Measurement

The video discusses the top 10 strongest earthquakes in history, explaining what earthquakes are, their causes, and the impact of tectonic activity. It highlights the role of seismology in understanding earthquakes and details significant earthquakes, including their magnitudes, locations, and effects.

What is the primary cause of an earthquake?

• Sudden release of energy in Earth's crust

• Heavy rainfall

• Volcanic eruptions

• Tidal waves

Which scientific field studies all aspects of earthquakes?

• Meteorology

• Oceanography

• Geology

• Seismology

Where do most of Earth's major earthquakes occur?

• In polar regions

• In the middle of tectonic plates

• Along the margins of tectonic plates

• In desert regions

Which earthquake belt is known for affecting many populated coastal regions around the Pacific Ocean?

• Mid-Atlantic Ridge

• East African Rift

• Himalayan Belt

• Circum-Pacific Belt

What was the magnitude of the 2012 Sumatra earthquake?

• 7.8

• 8.6

• 9.0

• 8.2

Which natural disaster was triggered by the 1965 Rat Islands earthquake?

• Hurricane

• Volcanic eruption

• Tsunami

• Landslide

What was the magnitude of the 1906 Ecuador-Columbia earthquake?

• 7.9

• 9.1

• 8.8

• 8.2

Which earthquake is known as the most powerful ever recorded?

• Indian Ocean Earthquake

• Valdivia Earthquake

• Alaska Earthquake

• Tohoku Earthquake

What was the magnitude of the 1964 Alaska earthquake?

• 8.9

• 8.7

• 9.2

• 9.5

Which earthquake caused a tsunami that affected 14 countries?

• Tohoku Earthquake

• Indian Ocean Earthquake

• Kamchatka Earthquake

• Valdivia Earthquake