The thin outer most layer of the Earth or the uppermost part of the lithosphere.
What is crust?
100
Lithosphere of Earth that moves and grinds together.
What is tectonic plates?
100
A break in the Earth's along which blocks of the crust slide relative to one another due to tectonic forces.
What is a fault?
100
A mountain or hill that brings magma, hot gas, ash, hot vapor, and rock fragments are being released to the surface.
What is a volcano?
100
This is the amount of force per unit area that is put a given material.
What is stress?
200
The layer of Earth between the crust and the core.
What is the mantle?
200
Gradual movements of the Earth's tectonic plates throughout geological time.
What is continental drift?
200
A fault in which the hanging wall moves up relative to the footwall.
What is a normal fault?
200
A broad, domed volcano, with gently sloping sides, it erupts with the fluid of basaltic lava.
What is a shield volcano?
200
The type of stress that occurs when an object is squeezed.
What is compression?
300
The central, spherical part of the Earth below the mantle.
What is the core?
300
The formation of new areas of oceanic crust, which occurs through the up-welling of mid-ocean ridges and its subsequent outward movement on either side.
What is sea-floor spreading?
300
A fault in which the hanging wall moves up relative to the footwall.
What is a reverse fault?
300
They have steep sided cones of basaltic fragments and they are smaller and simpler than composite volcanoes.
What is a cinder cone volcano?
300
The type of stress that occurs when forces act to stretch an object.
What is tension?
400
The outermost, rigid layer of the Earth that consists of the crust and the rigid upper part of the mantle.
What is the lithosphere?
400
When two plates move toward each other and push together, usually forming mountains if the plates are of equal density.
What is a convergent boundary?
400
A fault in which two fault blocks move past each other horizontally
What is a strike-skip fault?
400
These are tall, cone-shaped mountains that are typically steeply sided and have large symmetrical sides.
What is a composite volcano?
400
The bend of rock layers due to stress in the Earth's crust.
What is folding?
500
Upper layer of Earth's mantle, below the lithosphere in which there is low resistance to plastic flow and convection is thought to occur.
What is the asthenosphere?
500
Where a convergent collision happened on oceanic crust, but the plates were pushed downward instead of upward into mountains. This only happens when one plate is less dense than the other.
What is a subduction zone?
500
The block of rock that lies on the underside of an inclined fault or of a mineral deposit.
What is a footwall?
500
This is the cloud of ash and lava released into the air from volcanoes.
What is pyroclastic material?
500
A device used for measuring the stress and strain inside the Earth.