Earth´s layers
Earth´s outermost layer
crust
Who suggested continental drift
Alfred Wegener
Deformation
When rock changes shape due to stress
What comes out of volcanoes
Lava, gas, ash
What is an epicenter?
directly above focus
True or False continental plate is thicker and denser then oceanic
false
What was the single landmass called?
Pangaea
folding
When rock layers bend over
Volcanoes that have not erupted in 200 years
Dormant volcanoes
What is a focus
a place along earth´s fault
What moves the tectonic plates?
convection currents
What is sea-floor spreading
A process when sea-floor is constantly being created.
Fault
a crack
Magma that reached Earth´s surface is called
Lava
How many earthquakes are detected each year?
500,000
Name the 5 physical layers of Earth
Lithosphere, asthenosphere, mesosphere, outer core, inner core
The lithosphere is dived into what?
Tectonic plates
Strike-slip faults with shear stress have
transform boundaries
Three types of volcanoes
Composite, cinder cone, shield volcanoes
What are the main tectonic plate boundaries
divergent, convergent,transform
Is the inner core liquid or solid
Solid
When two plates collide it creates a?
Convergent boundary
Reverse with compression have
Convergent boundaries
A basin-shaped crater
Calderas
If an Earthquake happens underwater what does it create
Tsunami