C2 Flashcards
Realm of life
biosphere
terrestrial component of earth
Geosphere
Water part of earth
Hydrosphere
Gaseous layer of earth
atmosphere
realm of permanently frozen
cryosphere
2 layers of earth
chemical and physical/mechanical layering
layer of earth based composition
chemical layering
layer of earth based on rigidity
physical/mechanical layering
rigid outer layer (crust)
lithosphere
solid rock slowly molten magma (hot asphalt)
asthenosphere
middle layer (solid layer of lower mantle)
mesosphere
liquid iron nickel layer
outer core
solid iron nickel; very dense
inner core
very dense, basalt, thin and young crust
oceanic crust
less dense, granite crust
continental crust
composed of Mg, Fe, and Si
heterogenous layers
more solid near surface
asthenosphere
mantle
nickel & Fe; very hot
liquid=
solid=
core
outer core
inner core
boundary observed between crust and mantle
Mohorovicic discontinuity
boundary between mantle and outer core
Gutenburg discontinuity
boundary between outer and inner core
Weichert discontinuity
Evidence that earth is layered. explain
P and S waves travelling differently in a type of medium that results in deflections.
arrangement of supercontinents and how old they are.
ur- 3B y.o
Kenor land- 2.5B
Nuna/Columbia- 1.8
rodinia- 1.1B
Pangaea- 240 M
one ocean
panthalassa
____ are the ones that cracked, not the continents and this is due to ____ in core that causes ______
lithospheric plates/tectonic plates; radioactive decay; convection currents