Patterns of Change Flashcards
1
Q
Formation
of fossil
A
- buried organism is replaced by mineral deposits
- dead organism at the bottom of the water will be buried with sediments and compressed
- chemical changes occur causing organisms to be mineralized
2
Q
Where
does fossilization
Occur
A
- Low oxygen locations (will not decompose too fast)
- organisms with hard body parts
3
Q
what
can be fosssilized
A
- Foot prints
- Organism in amber/tree sap
- Volcanic ash, ice
formations - preserves Chemical
remans
4
Q
What did
scientists
think
fossils were?
A
- recently living organisms become trapped and hardened for a small amount of time
5
Q
Observations of fossils
record
A
- Animals found were weird and unknown. They were extinct animals
- no fossil of living species
- fossils were buried deep in rock formations
- fossils were in unexpected locations like deserts
6
Q
Paleontology
A
Learning prehistoric life of studied fossil organism
- used fossils to prove that life was diff in past
7
Q
Geologey
A
Study of
Earths
Physical stuture
8
Q
Georges Cuiver and
Charles Lyell
A
- provided evidence of how species.
and earth changed overtime - conducted 1st
detailed studies of fossils
9
Q
Cuviers observations
A
- fossils of simple organisms are found in all depths
- complex fossils are found at shallower depths (younger rocks)
- fossils in shallow depths more likely to resemble living species
-each rock layer has its owns set of fossils
10
Q
What is
in old
and young fossils
disposits
A
- oldest fossil depoists= the simplest form of life
- recent fossil despits= both new and complex life form
11
Q
catatrophism
A
- catastrophism (floods) causes extinction of species
- extinct species were replaced with new species
- created by Cuvier
12
Q
uniformitararian
A
- created by Lyell
- earth changes in the same way it did in the past
- geological change is slow and gradual
- natural laws that influence these changes are constant and external and they operate in the same intensity they did back then
13
Q
A
