Plate Boundaries
The plates move because of .......................... .
What are convection currents?
The point on the earth's surface directly above the origin of an earthquake.
What is the epicentre?
Earthquakes occur when these shift.
What are plates?
At which boundaries do volcanoes occur?
What are divergent/ constructive and convergent/ destructive boundaries?
Folding occurs at two boundaries.
What are subduction zones and collision zones?
Type of plate boundary where two lithospheric plates are moving away from each other.
What is a divergent plate boundary?
The energy released from an earthquake in the form of a series of pulses.
What are seismic waves?
Faults are ................. in rocks or the earth's crust.
What is a fracture?
It has sides that are wide and flat.
What are shield volcanoes?
The type of fold where one limb is pushed up until it lies on top of the other limb.
What is a recumbent fold?
Which plate subducts when an oceanic and continental plate collides?
What is oceanic plate?
What is liquefaction?
Normal faults occur where rocks pull apart by ..................... .
What is tension?
The huge hole left by the collapse of a volcanic mountain is called a ........................... .
What is a caldera?
Formed when rocks fold upward.
What is an anticline?
Mid-ocean ridges occur at this boundary.
What is a divergent plate boundary?
The zone where earthquakes occur at subduction zones, where pressure is built up and released.
What is the Benioff zone?
Where rocks are pushed together by tension.
What is a reverse fault?
Type of volcano formed from alternating layers of ash and layers.
What is a composite volcano?
An example where two continental plates move toward each other forming a fold mountain.
What is the Himalaya Mountains?
The plates sliding past each other at the San Andreas Faults.
What are the North American Plate and Pacific Plate?
A measure of earthquakes energy.
What is magnitude?
Transform faults occur where rocks are pushed past each other in a .......................... direction.
What is horizontal?
What is produced from explosive eruption?
What is pyroclastic material?
The mountains that form where the Nazca Plate subjects under the South American Plate
What is the Andes Mountains?