Tectonic Hazards Flashcards
Are tectonic hazards a type of natural hazard?
What is a natural hazard?
A naturally occurring event that has the potential to affect people’s lives or property
Name a couple examples of natural hazards?
Earthquakes, tsunamis, volcanic eruptions
The earths surface is separated into…
Describe the 4 layers and the structure of the earth and what they are made out of
- Inner core - solid nickel and iron
- Outer core - liquid
- Mantle - semi-molten rock that moves very quickly
- Crust- very thin, divided into tectonic slabs
What are the two types of crust?
What type of crust is thick and less dense?
What crust is thin and more dense?
The plates are moving because…
The rock in the mantle underneath them is moving
The places where the plates meet are called the ____ or _____
Boundaries or plate margins
What are the 3 types of plate margin?
The area where continental plates collide is called a …
Destructive margins are where two plates are… explain
Moving towards eachother.
Where an oceanic plate meets a continental plate, the denser oceanic plate is forced down into the mantle and destroyed.
What’s an example of a destructive margin?
Pacific plate is being forced under the Eurasian plate along the east coast of Japan.
Constructive margins are where two plates are… explain
Moving away from eachother.
Magma (molten rock) rises from the mantle to fill the gap and cools, creating new crust.