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Flashcards in Fossils Deck (19)
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1

Uniformitarianism

The theory that changes earths crust during geological history have resulted from the action of continuous and uniform processes

2

Catastrophism

The theory that changes earths crust during geological history Have occurred through violent events

3

Paleontology

A branch of science with fossils

4

Relative dating

Determining the order of past events

5

Absolute dating

A definite order of past events

6

Superstition

A belief

7

Isotope

An atom of a certain element

8

Radio active decay

An unstable atom emites radioactive waste

9

Half life

How long it takes for an element to half decay

10

Fossil

Evidence of pre exsisted animal

11

Trace fossil

An indirect evidence of past life

12

Mold

A fungus that grows in a multicellular form

13

Cast

Secondary rock of what mold grows on

14

Uncomformity

The difference in age between rocks

15

Mass extinction

Rapid decrease in a species

16

Jurrassic period

A time 200 million years ago

17

Creataceus period

A time 65 million years ago

18

Devonian period

A time 416 Million years ago

19

Quaternary period

a time 216 million years ago