The Rest Of Them Deck Flashcards
What percentage of earth history occurred during the Precambrian Era?
88%
What types of animals and plants are in the Cenozoic era?
Large mammals, humans
What types of animals and plants were in the Paleozoic era?
Ferns, fish, amphibians
Lithosphere
Solid outer section of earth that includes the crust and the rigid upper part of the mantle.
Asthenosphere
Solid part of the upper mantle. Weaker, less rigid. Plastic like. Crust moves over it.
Volcanic island arc
Occurs when two oceanic plates collide, and the older crust goes beneath the newer one
What are the characteristics of crust?
5 to 50 km thick
Continental and oceanic
22°C
Least dense
What are the characteristics of mantle?
3000°
Silicate rocks
2890 km under crust
Contains convection currents, where rocks heat up and cool
What are the characteristics of the outer core?
5000°
Magnetic field
Uses motion of magma liquid
Iron and nickel
What are the characteristics of the inner core?
1250 km thick
Melts outer core
Spins faster than
6000°
Divergent plate boundary
Movement is away from each other
Makes new crust
An example is the great rift valley
Transform plate boundary
Move past each other
Doesn’t create or destroy crust
Makes earthquakes
An example is the San Andreas Fault
Convergent plate boundary (Collision)
Continent-Continent
Moves toward each other
Folded mountains
An example is the cascades
Convergent plate boundary (Subduction)
Ocean-Ocean
Movement is colliding and subducting
Volcanic arc
Example is the islands in Alaska
Convergent plate boundary (Subduction)
Ocean-Continent
Movement is colliding and subducting
Volcanoes and trenches
Example is the cascade volcanoes
Sublimation
The process of snow and ice turning into water vapor without first melting into water
