Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
28 Cards in this Set
- Front
- Back
|
Geology
|
The study of the solid earth.
|
|
|
Pressure
|
The force exerted on a surface divided by the total area over which the force is exerted.
|
|
|
Crust
|
The layer of rock that forms Earth's outer surface.
|
|
|
Mantle
|
The layer of hot, solid material between Earth's crust and core.
|
|
|
Lithosphere
|
A rigid layer made up of the uppermost part of the mantle and the crust.
|
|
|
Asthenosphere
|
The soft layer of the mantle on which the lithosphere floats.
|
|
|
Inner core
|
A dense ball of solid metal at the center of the Earth.
|
|
|
Outer core
|
A layer of molten iron and nickle that surrounds the inner core of the Earth.
|
|
|
Density
|
The measurement of how much mass is contained in a given volume of a substance.
|
|
|
Rock
|
The material that forms Earth's hard surface.
|
|
|
Fossil
|
The preserved remains or traces of living things that lived in the past.
|
|
|
Pangaea
|
The name of the single landmass that broke apart 225 million years ago and gave rise to today's continents.
|
|
|
Mid-Ocean Ridge
|
The undersea mountain chain where new ocean floor is produced; a divergent plate boundary.
|
|
|
Sea-Floor Spreading
|
The process by which molten material adds new oceanic crust to the ocean floor.
|
|
|
Deep Ocean Trench
|
A deep valley along the ocean floor through which oceanic crust slowly sinks towards the mantle.
|
|
|
Subduction
|
The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary.
|
|
|
Rift Valley
|
A deep valley that forms where two plates move apart.
|
|
|
Convergent boundary
|
A plate boundary where two plates move toward each other.
|
|
|
Divergent boundary
|
A plate boundary where two plates move away from eah other.
|
|
|
Strike-slip fault
|
A type of fault where rocks on either side move past each other sideways with little up and down motion.
|
|
|
Normal fault
|
A type of fault where the hanging wall slides downward; caused by compression in the crust.
|
|
|
Reverse fault
|
A type of fault where the hanging wall slides upward; caused by compression in the crust.
|
|
|
Hot spot
|
An area where magma from deep within the mantle melts through the crust above it.
|
|
|
Transform boundary
|
A plate boundary where two plates move past each other in opposite directions.
|
|
|
Deformation
|
A change in the volume or shape of the Earth's crust.
|
|
|
Fault-block mountain
|
A mountain that forms where a normal fault uplifts a block of rock.
|
|
|
Land subsidence
|
A sinking or subsiding of a land surface as a result of geologic processes or of human activities.
|
|
|
Continental Drift
|
The hypothesis that the continents slowly move across Earth's surface.
|
