Earthquakes Flashcards
When do earthquakes occur
Earthquakes occur when 2 plates collide and slide past each other.
Where are certain earthquakes located
- The pacific ring of fire,
- Alpine- Himalayan belt= India, china
- The Mediterranean belt= Turkey, Italy
What is an earthquake
An earthquake is a sudden movement or shaking in the earth caused by movement of its plates.
What is the focus
The focus is where the earthquake starts
What is a tremor
A tremor travels from the focus during the earthquake
What is a fault line
A fault line is a long crack in the surface of the earth where earthquakes happen e.g The San Andreas fault
What Is a constructive plate boundary
A constructive plate boundary is when two tectonic plates move away from each other
What is an ocean trench
An ocean trench is a long narrow depression on the sea floor
What is a destructive plate boundary
A destructive plate boundary is when the oceanic plate and the continental plates move together and the oceanic plate subducts
What is the epicentre
The epicentre is where most damage is done
How is a fault line caused
A fault line is caused when two plates slide past each other
Name a fault line
The San Andreas fault
What type of plate boundary caused the Japan tsunamai
The destructive plate boundary
When was the Japan tsunami
2011
What is a constructive plate boundary
A constructive plate boundary is when two plates pull apart
