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Fossil Record Flashcards

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Biology 101 flashcards
1
Q

uniformitarianism

A

the theory that changes in the earth’s crust during geological history have resulted from the action of continuous and uniform processes.

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2
Q

catastrophism

A

the theory that changes in the earth’s crust during geological history have resulted chiefly from sudden violent and unusual events.

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3
Q

paleontology

A

the branch of science concerned with fossil animals and plants.

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4
Q

relative dating

A

past events

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5
Q

absolute dating

A

determining age

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6
Q

superposition

A

linear systems

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7
Q

isotope

A

each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.

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8
Q

radioactive decay

A

spontanieous transformation

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9
Q

half-life

A

u live a half life

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10
Q

fossil

A

bones in layers of dirt

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11
Q

trace fossil

A

a small fossil

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12
Q

mold

A

a deadly fungi

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13
Q

cast

A

what you get on your hand when you break it

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14
Q

unconformity

A

a surface of contact between two groups of unconformable strata.

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15
Q

mass extinction

A

when a lot of things die at once

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16
Q

Jurassic period

A

56 million years ago

17
Q

Cretaceous period

A

Image result for cretaceous period definitionwww.britannica.com
noting or pertaining to a period of the Mesozoic Era, from 140 million to 65 million years ago, characterized by the greatest development and subsequent extinction of dinosaurs

18
Q

Devonian period

A

Image result for Devonian period definitionwww.livescience.com
The Devonian is a geologic period and system of the Paleozoic, spanning 60 million years

19
Q

Quaternary period

A

The Quaternary period is the name for the time in which we live.

20
Q

Permian period

A

The Permian is a geologic period and system which spans 46.7 million years

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