Vocab Science Pages 1-119. Flashcards
A unit quiz with vocabulary words, please study below to get a better understanding of the words. (33 cards)
What is Pangaea?
The name is given to a super continent that began to break apart approximately 200 million years ago.
What is Continental Drift?
Alfred Wegener’s hypothesis that all continents were once connected into a super continent (Pangaea) that broke apart 200 million years ago and drifted slowly away to their modern positions.
What are Mid-Ocean Ridges?
Long, narrow mountain range(s) on the ocean floor, that are formed by magma at divergent plate boundaries.
What are Ocean Trenches?
A deep, underwater channel (trough) created by one plate sub-ducting under another plate at a convergent boundary.
What is Seafloor Spreading?
The process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust is pushed away from the ridge where new crust is coming out.
What is Magma?
Molten rock that is stored below Earth’s surface. (In the mantle).
What is Lava?
Magma (from the mantle) that erupts (most of the time from volcanoes) onto Earth’s surface.
What are Plate Tectonics?
The theory that Earth’s surface is broken into large, rigid pieces that move with respect to each other. They move toward each other.
What are Convergent Boundaries?
The boundary between two plates that move toward each other.
What are Divergent Boundaries?
The boundary between two plates that move away from each other.
What are Transform Boundaries?
The boundary between two plates that slide past each other.
What is Subduction?
The process that occurs when one tectonic plate moves under another tectonic plate.
What is a Volcanic Arc?
A curved line of volcanoes that forms parallel to a plate boundary.
What is a Volcano?
A vent in Earth’s crust through which molten rock flows.
What is a Fault?
A crack or a fracture in Earth’s lithosphere along which movement occurs, like an earthquake.
What is a Fault Zone?
An area of many fractured pieces of crust along a large fault. A collection of faults.
What is a Earthquake?
Vibrations caused by the rupture and sudden movement of rocks along a break or crack in Earth’s crust.
What is a Tsunami?
A wave that forms when an ocean disturbance suddenly moves a large volume or wave of water.
What is a Landslide?
Rapid, downhill movement of soil, that releases or loses rocks and boulders.
What are Impact Craters?
A round depression formed on the surface of a planet, moon, or other space objects by the impact of a meteorite.
What is Weathering?
The mechanical and chemical processes that change Earth’s surface over time. (Also can change and affect the rock cycle).
What is Erosion?
The moving of weathered material, or sediment, from one location to another.
What is Deposition?
The laying down or settling of eroded material. It decays.
What is a Glacier?
A large mass of ice, formed by snow accumulation on land, and cold temperatures, that slowly moves across Earth’s surface in water or on land.
