final exam Flashcards
the ______ is a proposed epoch indicating significant human impact on natural systems
anthropocene
we are currently in the ______ era
Cenozoic
we are currently in the _______ which began 2.6 mya
quaternary
under this period there is the pleistocene epoch, the holocene epoch, and the proposed ______ epoch
anthropocene
hominids appeared ______ mya in the fossil records
6 million
the domestication of _____ and ______ allowed humans to establish permanent homes and grow larger pop. densities
plants, animals
megafauna extinction, origin of farming, new-old world collision, and the industrial revolution are all examples of potential measures for a ______ ____ of the anthropocene
global, era
in 2019, it was officially decided that the anthropocene start date was ____
mid-20th century (1950)
the ____-life , _____-water, ____-air, ____-land, and ____-ice are the fkive major earth systems
biosphere, hydrosphere, atmosphere, lithosphere, cryosphere
____ ____ involve coupled systems that collectively act to accelerate or decelerate an initial change
feedback, loop
____ are changes in earths energy balance or climate systems
pertubation
____ are the climactic relationships that span great distances that can provide the predictability of climate cystems during various time frames
teleconnection
el nino is an example of a
teleconnection
in an el nino event, the surface temperature of water warms and creates a ____ pressure system
air
anthropogenic climate forcing has resulted in ____ climate
warming
____ ____ is a way to measure change in natural systems before we had direct measurement tools
proxy, data
tree rings, peet cores, and ice cores are all examples of ____ ____
proxy, data
river flow, precipitation, temp change are all example of ____ ____
direct, measurement
____ is the study of tree rings to meausre draught and fire frequency
dendrology
in peat cores, higher amoints of ____ indicate that the climate is warmer at that period of time
soil
using surface and deep-sea corals sciteists cam measure isotopeswhich can ikdicate when gthe oceans _____ changes
sediment
in the study of fluvial geomorphology, researchers can study the changing amount of ____ and ____ load
streamflow, sediment
difference in the amount of land area being covered is an example of _____ scale
spatial
change over time is an example of ___ scale
temporal
