new thing after oil things

Question 1

uniformitarianism

Answer 1

a prinple that sttes that geologic processes that occurres in the past can be explained by current geolgic processes

Question 2

catastrophism

Answer 2

inciple that states that geologic cahnge occurs suddenly

Question 3

paleontology

Answer 3

the scientific study of fossils

Question 4

relative dating

Answer 4

any method of determining wheahter an event or object is older or younder hat other events or objescts

Question 5

5. absolute dating

Answer 5

measure the physical properties of an object itself and use these measurements to calculate its age.

Question 6

superposition

Answer 6

a principle that states that younger rocks lie bout older rocks if the ayers have not been disturbes

Question 7

isotope

Answer 7

each of two or more forms of the same element that contain equal numbers of protons

Question 8

8. radioactive decay

Answer 8

the process in which a radioavctiit isotope tends to break down into a stable isotope of the smae element or antother element

Question 9

half-life

Answer 9

the time needed for half of a sample of radioavtive substance to undergo radioavtive secay

Question 10

fossil

Answer 10

the reamins or physical evidenve of an organism preserved by geolofical prosesses

Question 11

trace fossil

Answer 11

a fossilized mark that is formed in soft sediment by the movment of an animaol

Question 12

mold

Answer 12

a mark or cavity made in a sedimentary surface by a shell or other body

Question 13

cast

Answer 13

a type of fossil that formed when sediments fill in the cavity let by a decompsed organism

Question 14

unconformity

Answer 14

a surface of contact between two groups of unconformable strata.

Question 15

mass extinction

Answer 15

An extinction event is a widespread and rapid decrease in the biodiversity on Earth

Question 16

Jurassic period

Answer 16

he Jurassic period (199.6 million to 145.5 million years ago) was characterized by a warm. dinosarse where the most power full doring that time.

Question 17

. Cretaceous period

Answer 17

145.5 million years ago - 66 million years ago. still dicnosare was the most popular

Question 18

Devonian period

Answer 18

0.3 million years from the end of the Silurian, 419.2 million years ago. fish where the was the domint animals group

Question 19

Quaternary period

Answer 19

2.58 million years ago. the most domiant anmila gorup was mammles

Question 20

. Permian period

Answer 20

298.9 million years ago. the most domint animal group was carnivores.