fossil record Flashcards
(19 cards)
uniformitarianism
is the same princible that the same natural laes and procecess as we do today
catastrophism
is the theory that the Earth has been affected in the past by sudden, short-lived, violent events, possibly worldwide in scope.
paleontology
is a rich feild that with a long and interesting past
relitive dating
s the science of determining the relative order of past event the age of an object in comparison to another without nesecary determination of the age
absolute dating
is the processess of determing of the age on a spesified scale
superposition
is a principle of quantum theory that describes a challenging concept about the nature and behavior of matter and forces at the sub-atomic level.
isotope
Each atomic number identifies a specific element, but not the isotope; an atom of a given element may have a wide range in its number of neutrons
radioactive decay
is the process by which a nucleus of an unstable atom loses energy by emitting radiation.
half-life
were you live half your life
fossil
the remains of a dead organism
trace fossil
provide us with indirect evidence of life in the past, such as the footprints, tracks, burrows, borings, and feces left behind by animals, rather than the preserved remains of the body of the actual animal itself.
mold
is a fungus
cast
somthing to support a broken limb
unconformity
the contact between sedimentary rocks that are significantly different in age,
mass extinction
is a widespread and rapid decrease in the amount of life on Earth.
Jurassic period
were studies of rocks
Cretaceous period
was the extinction of the dinosouars
Devonian period
is a Devonian age deposit containing fossils of both zosterophylls and trimerophytes, some of the earliest vascular plants
Quaternary period
is a geologic time period that encompasses the most recent 2.6 million years
