fossil records 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

person who study’s fossils

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4
Q

relative dating

A

Relative dating is the science of determining the relative order of past events, without necessarily determining their absolute age.

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5
Q

absolute dating

A

garenteed date

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6
Q

superposition

A

Quantum superposition is a fundamental principle of quantum mechanics

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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

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8
Q

radioactive decay

A

the process by which an unstable atomic nucleus loses energy by radiation

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9
Q

half-life

A

the time it takes for one-half of a radioactive element to decay into a daughter isotope

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10
Q

fossil

A

bones of something that died

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11
Q

trace fossil

A

a fossil of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself.

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12
Q

mold

A

an impression of a living organism

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13
Q

cast

A

when an animal, plant, or other organism dies

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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 whole species dies from one effect

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16
Q

Jurassic period

A

period from dinosaurs lived

17
Q

Cretaceous period

A

period from dinosaurs lived

18
Q

Devonian period

A

period from dinosaurs lived

19
Q

Quaternary period

A

period from dinosaurs lived

20
Q

Permian period

A

period from dinosaurs lived