Distribution Of Tectonic Hazards Flashcards
What are the distinct zones where earthquakes tend to happen?
Plate boundaries
Earthquakes occur at the edges of tectonic plates.
What are regions called where earthquakes may also occur apart from plate boundaries?
Intraplate regions
These regions may experience earthquakes due to stress built up by continental rifting or transfer from other regions.
Name one example of an intraplate earthquake region.
Great Rift Valley area in Africa
Other examples include the Lake Baikal area in Russia and the Tibet region in China.
True or False: The distribution of earthquakes is random throughout the planet.
False
Earthquakes are not random; they occur in specific zones.
Fill in the blank: Earthquakes are related to stress built up by _______.
continental rifting
Stress can also transfer from other regions.
What is the main cause of earthquakes at plate boundaries?
Tectonic plate movement
The movement of tectonic plates creates stress that leads to earthquakes.
What percentage of earthquakes occur at faults?
70%
Most earthquakes are associated with faults.
Name one factor that can lead to earthquakes in intraplate regions.
Stress transfer from other regions
This stress can lead to earthquakes even away from plate boundaries.
What percentage of tsunamis occur around the Pacific Ocean?
Over 70%
What percentage of tsunamis occur in the Mediterranean Sea?
15%
What percentage of tsunamis occur in the Caribbean Sea and Atlantic Ocean?
9%
What is the primary cause of tsunamis?
Tectonic activity
At what type of plate boundaries do most tsunamis occur?
Convergent boundaries
Fill in the blank: The three main types of plate boundary are constructive, conservative, and _______.
destructive
What is an example of a constructive plate boundary?
Mid-Atlantic Ridge
