Plate Tectonics & Earthquakes 🌋 Flashcards
Conservative plate boundary
Where two plates slide past eachother
Collision plate boundary
Two continental plates meet
Destructive plate boundary
Oceanic crust meets continental crust
Constructive plate boundary
Two oceanic plates move apart
What is a plate
A piece of the earth’s crust
What is a plate boundary
Where two plates meet
Distribution of volcanoes and earthquakes
Along the plate boundaries
Epicentre
The point on the Earth‘s surface directly above the focus. This is where maximum damage is caused
Seismic waves
Spread outwards, their stength decreases with distance from focus
What is the focus
The start of the earthquake
What was the Magnitude of the Christchurch earthquake
6.3
What was the magnitude of the Nepal earthquake
7.8
When was the Nepal earthquake
25th April 2015
When was the Christchurch earthquake
22nd Feb 2011
Primary effects of Christchurch
181 killed
6600 injured
50% of city buildings destroyed
80% of city without electricity
Liquefaction- 4000 homes unstable