Big picture and observation- Cycles and Scientific Method Flashcards
(22 cards)
Geology
Study of the Earth
Plates
one of about 20 distinct pieces of the relatively rigid lithosphere
theory of plate tectonics
the theory that the outer layer of the Earth consists of separate plates that move with respect to one another
Earth system
the global interconnecting web of physical and biological phenomena involving the solid Earth, the hydrosphere, and the atmosphere
internal processes
a process in the Earth System ultimately caused by the Earth’s internal heat
external processes
geomorphologic process that is the consequence of gravity or of the interaction between the solid Earth and its fluid envelope
gravity
attractive force that one mass exerts on another, the magnitude depends on the size of the objects and the distance between them
geologic time
the span of time since the formation of the Earth
shatter cones
small, cone-shaped fractures formed by the shock of meteorite impact
science
systematic study of natural phenomena via observation, computation, experiment, and modeling
scientific method
sequence of steps for systematically analyzing scientific problems in a way that leads to verifiable results
hypothesis
an idea that has the potential to explain a phenomenon; must be rigorously tested if it is to eventually become a theory
theories
a scientific idea supported by an abundance of evidence that has passed many tests and failed none
scientific laws
a concise statement that completely describes a natural relationship or phenomenon; it does not however, explain the phenomenon
supercontinent cycle
very long cycle where continents move over time to form large land masses
rock cycle
succession of events that results in the transformation of Earth materials from one rock type to another; then another, and so on
biogeochemical cycle
passage of chemicals among nonliving and living reservoir to another over time
nonliving reservoir
atmosphere, rock magma, soil, ocean
living reservoir
plants, animals, microbes
steady state conditions
proportions of chemical indifferent reservoirs remain constant, even though there is a constant flow of the chemical among the reservoirs
hydrologic cycle
movements of water from reservoir to reservoir on or near the surface of the Earth
carbon cycle
progressive transfer of carbon from reservoir to reservoir on the Earth’s surface