Earthquakes
What is an earthquake?
2 blocks of earth rubbing against each other suddenly.
What are the 4 layers of the earth?
Crust, mantle, outer core, inner core.
What is magma?
Molten rock underground.
What is a tectonic plate?
A large irregular shaped rock that makes up part of the crust.
What is a fault?
A zone of fractures between 2 blocks of rocks.
Why do earthquakes happen?
Two plates get stuck, build up pressure, and split past one each other.
What layer of the earth causes the crust to move?
The mantle.
What are the 4 major landforms?
Mountains, hills, plains, and plateaus.
How many tectonic plates are there?
15
What type of fault causes earthquakes?
Strikeslip fault
Where do most earthquakes happen?
The ring of fire.
What is the main material of the crust?
Silica
How are plateaus formed?
Magma pushes land up from the ground.
What is the original continent?
Pangea
What type of fault has the faultline underneath the ground?
The blind thrust.
What are the 3 different shocks of an earthquake?
Foreshock, mainshock, and the aftershock.
How thick is the crust?
100 kilometers.
How are mountains formed?
How do tectonic plates move?
Mantle movement force the plates to shift.
What are the 3 main faults?
Normal fault, thrust/reverse fault, and strikeslip fault.
What is a hypocenter?
The point below the surface of where an earthquake starts.
What are the main materials of the inner and outer core?
Iron and nickel.
What minerals can plateaus contain?
Iron ore and coal.
What is the largest tectonic plate?
A line in which 2 sides of a fault meet.