Earthquakes Flashcards
Name an example of a constructive divergent plate boundary
The mid Atlantic ridge
Name an example of a constructive-divergent plate boundary.
The mid Atlantic ridge at Iceland.
What are the products of Constructive divergent plate boundaries? And why?
Shallow earthquakes and volcanoes. This is because here magma rises and at the same time tectonic plates are diverging.
Name an example of a conservative plate boundary.
Christchurch New Zealand and San Andreas fault
Name the products of Conservative plate boundaries and explain why.
Shallow earthquakes. Because the plates slide past each other.
Give an example of a destructive-convergent-subduction plate boundary.
Chile/Peru
What plate boundary causes Earthquakes(non-shallow) and Explosive volcanoes?
Destructive-convergent-subduction because as oceanic crust meets continental crust, because it is denser, the continental crust is sub ducted and destroyed. This creates magma
Give an example of a collision zone-constructive-divergent plate boundary.
The himalayas
Darfiels Richter scale magnitude
7.1
Christchurch Richter scale magnitude
6.3
Darfield duration
40 seconds
Christchurch length
2-25 seconds
What type of plate boundary was Christchurch?
Conservative
Christchurch number of deaths.
185
Main buildings that collapsed in Christchurch
Canterbury TV(this causes mist if the deaths) the cathedral spire
Give reasons why Christchurch was more fatal.
It was at midday. Had a much shallower focus. A more populated area.
What are red zones and what did Christchurch do about them.
Red zones are areas that suffer extreme liquefaction during earthquakes. Cars and buildings sink. Christchurch turned red zones into spaces for wildlife, parks, spaces for sports, spaces for farms and places for exercise.
What was the reason for shops to be replaced with shipping containers?
It gave people hope. It got the economy going again. They are earthquake proof.
Why was st Andrews cathedral re made in Cardboard?
It is light and strong. It is cheap. It is good for the environment.
What are some ways Christchurch improved the city in redesign?
They made more green spaces more performing art places to bring traction to the city. They produced a lot more sport facilities.