Earth's Interior
What is the part of Earth's interior that is dense and composed of mostly solid iron?
Inner core
What are large fractures in rocks along which movement occurs?
Faults
What do we call mountains that are made of huge, tilted blocks of rock that are separated from surrounding rocks by faults?
Fault-Block Mountains
What is the hot, molten mixture of rock material and gases called?
Magma
What happens to the temperature as you go deeper into the Earth?
It increases (gets hotter)
What is the hottest part of the Earth?
Inner Core
What can occur when plates slide along each other?
Earthquakes
What do we call mountains that are formed by the folding of rock layers caused by compression forces?
Folded Mountains
What is the pocket that fills up with magma?
Magma Chamber
As the crust is pulled apart, large slabs of rock sink, generating what? (p.294)
Rift Zone
What is the part of Earth's interior that is thought to be composed of mostly molten metal?
Outer core
What is the rigid upper part of Earth's mantle and the crust called?
Lithosphere
What do we call mountains that form when forces inside Earth push up the crust?
Upwarped Mountains
What is the nearly vertical crack in the rock of a volcanic mountain through which magma flows?
Pipe
What could occur at mid-ocean ridges? (p.297)
Ridge-push
Crust
What is the plasticlike layer that the plates move around on?
What type of mountains are formed when layers of molten lava pile up until a cone-shaped feature forms?
Volcanic Mountains
What is the opening to the pipe where magma flows onto the surface?
NOTE: Side vents often branch off the main pipe
What could occur where oceanic plates meet other oceanic or continental plates? (p.297)
Slab-pull
What is the largest layer of Earth's interior?
Mantle
NOTE: Even though it is solid, it flows slowly, similar to putty!
What do we call it when one plate sinks underneath another plate, and sinks into the mantle?
Subduction
What features would indicate that a mountain is relatively young and/or still forming?
Tall, rugged peaks
What is the bowl-shaped part of the volcano that surrounds the vent, where lava collects before it flows down the slope?
Crater
In addition to ridge-push and slab-pull, this might also contribute to the motions of Earth's plates? (p.297)
Convection