rock and fossil Flashcards
1
Q
uniformitarianism
A
this is a theory that shows how earths crust changed
2
Q
catastrophism
A
a theory of how earths crust changed
3
Q
paleontology
A
the study of fossils
4
Q
relative dating
A
the science in relative order
5
Q
absolute dating
A
the science in determing age of things
6
Q
superposition
A
a
7
Q
isotope
A
two or more form of the same element
8
Q
radioactive decay
A
decaying from radioactive waste
9
Q
half life
A
the time it takes for radioactive waste to get to get to half the danger
10
Q
fossil
A
bones or remains of animals
11
Q
trace fossil
A
a footprint
12
Q
mold
A
bacteria on food
13
Q
cast
A
a mold of a thing
14
Q
unconformity
A
a surface of contact between two groups of unconformable strata.
15
Q
mass extinction
A
almost everthing getting wiped out
