Layers of the earth
what is the top layer of the Earth?
The crust
what is the type of earthquake when one tectonic plate sinks under the other one
subduction
What is Pangaea?
The big continent before the plates separated.
What are mountains and how are they made?
Mountains are geological features usually made from tectonic plates crashing into each other.
What speed do the plates move at?
About the speed of fingernail growth.
What layer of the earth is liquid?
outer core
What type of boundary occurs when two plates crash directly into each other, usually creating mountains?
A Convergent Boundary.
What is the Oceanic Crust?
the crust that makes up the bottom of the ocean
What are Earthquakes and how are they formed.
They are caused by releases of energy and plates moving.
What are some ways the plates move?
Colliding together, sliding past each other, and sinking under.
What layer of the earth created the magnetic field?
Core
What is it called when two plates slide against each other?
A Transform boundary
What is the Continental crust?
it makes up the continents and is less dense.
What is the ring of fire?
a "ring" of volcanos
What types of features do tectonic plates cause?
Volcanos and mountains.
what layer is a mixture of solid and liquid?
mantel
What type of boundary is it when two plates go away from each other?
Divergent boundary
How many main tectonic plates are there?
seven
what is the asthenosphere?
It's a plastic region of the mantel
What is the main difference between Oceanic Crust and the crust?
one is underwater and one is land
what is the inner core made up of?
iron, and nickle
What force drives the tectonic plates to move?
heat from the Earth's core.
What is Fossil Evidence?
The evidence that the continents were together based on simmaler fossils.
What are mid-ocean ridges
mountains under the water formed by diverging plates.
What types of disasters are caused by tectonic plates
earthquakes and tsunamis