Fossil record

Question 1

uniformitarianism

Answer 1

is the principle or assumption that the same natural laws and processes that operate in the universe

Question 2

catastrophism

Answer 2

Catastrophism is the theory that the Earth has been affected in the past by sudden, short-lived, violent events, possibly worldwide in scope.

Question 3

paleontology

Answer 3

Paleontology is a rich field, imbued with a long and interesting past

Question 4

relative dating

Answer 4

rocks left behind.

Question 5

absolute dating

Answer 5

Absolute dating is the process of determining an age on a specified time scale in archaeology and geology.

Question 6

superposition

Answer 6

Superposition is a principle of quantum theory that describes a challenging concept about the nature and behavior of matter

Question 7

Isotope.

Answer 7

Each atomic number identifies a specific element, but not the isotope; an atom of a given element may have a wide range in its number of neutrons

Question 8

Radioactive decay.

Answer 8

Radioactive decay, also known as nuclear decay or radioactivity, is the process by which a nucleus of an unstable atom loses energy by emitting radiation.

Question 9

half-life

Answer 9

the time taken for the radioactivity of a specified isotope to fall to half its original value.

Question 10

fossil

Answer 10

he remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.

Question 11

trace fossil

Answer 11

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

Question 12

mold

Answer 12

A mold or mould is a fungus that grows in the form of multicellular filaments called hyphae. In contrast, fungi that can adopt a single-celled growth habit are called yeasts.

Question 13

cast

Answer 13

an object made by shaping molten metal or similar material in a mold.

Question 14

Unconformity.

Answer 14

a surface of contact between two groups of unconformable strata.

Question 15

mass extinction

Answer 15

A mass extinction is a relatively sudden, global decrease in the diversity of life forms. Mass extinctions have occurred periodicall

Question 16

Jurassic period

Answer 16

is a geologic period and system that extends from 201.3 0.6 Ma (million years ago) to 145 4 Ma; from the end of the Triassic to the beginning of the Cretaceous

Question 17

Cretaceous period

Answer 17

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 and the advent of flowering plants and modern insects.

Question 18

Devonian period

Answer 18

The Devonian is a geologic period and system of the Paleozoic Era spanning from the end of the Silurian Period,

Question 19

Quaternary period

Answer 19

is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS). It follows the Neogene Period and spans from 2.588 ± 0.005 mil