Rock and fossils

Question 1

Uniformitarianism

Answer 1

Geologic processes that is in the past.

Question 2

Catastrophism

Answer 2

Principle that states that geologic change occurs suddenly.

Question 3

Paleontology

Answer 3

Scientific study of fossils.

Question 4

Relative dating

Answer 4

Method of determining whether an event is older or younger.

Question 5

Absolute dating

Answer 5

Method of measuring the age of an event or object in years.

Question 6

Superposition

Answer 6

Younger rocks lie on top of older rocks unless the surface has been disturbed.

Question 7

Isotope

Answer 7

An atom that has the same number of protons but has a different number of neutrons.

Question 8

Radioactive decay

Answer 8

Radioactive isotope brakes down into stable isotope.

Question 9

Half-life

Answer 9

Time needed for half of a sample of radioactive substance to decay.

Question 10

Fossil

Answer 10

Remains of physical evidence of an organism preserved by geological processes.

Question 11

Trace fossil

Answer 11

A fossilized mark that is formed in soft sediment

Question 12

Mold

Answer 12

A mark or cavity made in our sedimentary surface or shell

Question 13

Cast

Answer 13

A type of fossil that forms when sediments fill a cavity left by decomposed organisms

Question 14

uniformity

Answer 14

A break in geological record created when rock layers are eroded

Question 15

Mass extinction

Answer 15

When it wipes out an entire species

Question 16

Jurassic Park

Answer 16

During the Mesozoic era T Rex

Question 17

Cretaceous period

Answer 17

Oceans formed as land shifted

Question 18

Devonian period

Answer 18

interval of the Paleozoic era Ages of fish

Question 19

Quaternary period

Answer 19

2.6 million years glaciers advanced from the poles then retreat

Question 20

Permian Period

Answer 20

Last period of Mesozoic era earth crust formed from a single massive continent.