Chapter 3

Question 0

How was Earth thought to change before uniformitarianism?

Answer 0

Catastophism

Question 1

Uniformitarianism and who proposed it?

Answer 1

Process of shaping the Earth

James Hutton

Question 2

Relative dating

Answer 2

Determining if a object’s older or younger than another object

Question 3

Principal of superposition

Answer 3

Younger rocks lie above older rocks

Question 4

Geologic column

Answer 4

Diagram that shows layers of rocks overtime

Question 5

Two events that disturb rock layers

Answer 5

Faults and Igneous intrusions

Question 6

Unconformities

Answer 6

Gaps in geological records, product of erosion or lack of deposition

Question 7

Three types of unconformities

Answer 7

Nonconformity, disconformity, angular unconformity

Question 8

Absolue dating

Answer 8

Finding age of a sample in years

Question 9

Atomic number

Answer 9

Number of protons

Question 10

Mass number

Answer 10

Protons + neutrons

Question 11

Average atomic mass

Answer 11

Average mass of an element based on all other naturally occuring isotopes

Question 12

Isotope

Answer 12

Same element with number of protons but different number of neutrons

Question 13

Parent isotope

Answer 13

Unstable isotope

Question 14

Daughter isotope

Answer 14

Stable isotope

Question 15

Radioactivity

Answer 15

When atoms of a element give off powerful rays of energy

Question 16

Four radioactive substance

Answer 16

Carbon 14, uranium 235, uranium 238, tharium 232