Fossil Flashcards
(20 cards)
uniformitarianism
the theory that changes in the earth’s crust during geological history have resulted from the action of continuous and uniform processes.
. catastrophism
the theory that changes in the earth’s crust during geological history have resulted chiefly from sudden violent and unusual events.
paleontology
Paleontology or palaeontology is the scientific study of life that existed prior to, and sometimes including, the start of the Holocene Epoch.
relative dating
dating your family
absoulute dating
dating sombody.
superposition
In physics and systems theory, the superposition principle, also known as superposition property, states that, for all linear systems.
isotope
Isotopes are variants of a particular chemical element which differ in neutron number. All isotopes of a given element have the same number of protons in each atom
radioactive decay
Radioactive decay is the process by which an unstable atomic nucleus loses energy by emitting radiation, such as an alpha particle, beta particle with neutrino or only a neutrino in the case of electron
. half-life
the time taken for the radioactivity of a specified isotope to fall to half its original value.
fossil
A preseved bone.
. trace fossil
A trace fossil, also called an ichnofossil, is a geological record of biological activity. T
mold
A mold or mould is a fungus that grows in the form of multicellular filaments called hyphae
cast
throw (something) forcefully in a specified direction.
unconformity
unconformity
. mass extinction
an extiction of a mass group of animals.
Jurassic period
A period before humans the end of dinosoars.
Cretaceous period
A period in time
Devonian period
A period in time
. Quaternary period
A period in time
. Permian period
A period in time
