Tectonic Movements
What's the name of a tectonic movement where two ocean crusts come together?
ocean-ocean convergence
What is an aftershock?
smaller earthquakes that occur after the mainshock in the same place
Which zone causes fold mountains?
Continent-continent convergence
Glowing molten rock that moves upwards, but does not always reach the surface
Magma
What is the word used to describe 2 plates that are moving apart?
divergence
What is the name of point directly below the surface of the earth where the earthquake starts from?
Hypocenter
What is an anticline?
An upwards bend with a ∩-shape, with the oldest rocks in the center of the fold
What is it called when magma trapped in the depths slowly cools and solidifies into rocks?
Deep magmatic activity
Which activity can cause further seafloor spreading?
Volcanism
What is the epicenter?
The place on the Earth's surface directly above the hypocenter
What is the other name for Circum-Pacific Mountain Range?
Ring of Fire
The magma that reaches the surface
Lava
What occurs when oceanic crust and continental crust converge?
Subduction of the oceanic crust
What causes induced earthquakes?
Human activity
What % of the world's active and dormant volcanoes can be found along the Ring of Fire?
more than 75%
Steeper
What are the 3 main parts of the mantle?
Upper Mantle, Transition Zone, Lower Mantle
What is the name of the type of earthquake that can be triggered by phenomena such as cave-ins, mostly in karst areas or close to mining facilities, as a result of subsidence
Collapse Earthquakes
Why is it called the Ring of Fire?
It has many earthquakes and ACTIVE volcanoes
What is formed from volcanic materials that have been scattered and settled from the air?
Volcanic Debris Rock