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Questions and Answers
What primarily causes earthquakes to occur along plate boundaries?
What primarily causes earthquakes to occur along plate boundaries?
- Tectonic plate movements resulting from seasonal temperature changes
- The movement of magma beneath the Earth's surface
- Friction built up from the interaction of lithospheric plates (correct)
- The melting of rocks due to heat from the Earth's core
Which region is known for having a high frequency of earthquakes due to its geological features?
Which region is known for having a high frequency of earthquakes due to its geological features?
- The Ring of Fire (correct)
- The Rocky Mountains
- The Midwest USA
- The Great Plains
What type of earthquakes are generally the most powerful?
What type of earthquakes are generally the most powerful?
- Moderate earthquakes occurring in volcanic regions
- Shallow earthquakes occurring at divergent plate boundaries
- Weak earthquakes occurring on transform fault lines
- Deep, powerful earthquakes occurring at convergent plate boundaries (correct)
How do convection currents in the mantle affect tectonic plates?
How do convection currents in the mantle affect tectonic plates?
Which of the following statements about earthquake risk is true?
Which of the following statements about earthquake risk is true?
Flashcards
Earthquake Zones
Earthquake Zones
Areas where the Earth's crust is most likely to experience earthquakes due to the movement of tectonic plates.
Plate Tectonics
Plate Tectonics
The continuous movement of the Earth's lithospheric plates caused by convection currents in the mantle.
Ring of Fire
Ring of Fire
A region surrounding the Pacific Ocean where a high concentration of earthquakes and volcanoes occur due to active plate boundaries.
Subduction
Subduction
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Earthquake
Earthquake
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Study Notes
Earthquake Risk
- Geologists can determine earthquake risk by locating active faults
- Earthquakes are most likely along plate boundaries
- In the US, California, Washington, and Alaska are prone to earthquakes
- Globally, the "Ring of Fire" experiences many earthquakes
Plate Motion and Earthquakes
- Earth's mantle currents create convection currents that cause the lithospheric plates to move
- Plate movement is slow, like fingernail growth
- Plates meet, slide past, or collide at plate boundaries
- Friction builds up between plates causing stress, and this stress is released as seismic waves
Earthquakes at Convergent Plate Boundaries
- Earthquakes occur at convergent plate boundaries where plates collide
- Earthquakes at convergent boundaries are deep and powerful
- Subduction zones are areas where plates collide, and are associated with deep, powerful earthquakes.
Causes of Earthquakes
- Stress builds in rocks along plate boundaries.
- The release of built-up stress causes seismic waves
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