Earth's Events

Question 1

Study the events of earth to the beginning to present

Answer 1

Geologist

Question 2

A system of chronological measurement to describe relationships

Answer 2

Geologic time

Question 3

Determining the sequence

Answer 3

Relative age

Question 4

Tells both the sequence of the events and amount of time

Answer 4

Absolute age

Question 5

Guide to the major eras

Answer 5

Geologic time scale

Question 6

The process used to determine the absolute geologic time

Answer 6

Radioactive dating

Question 7

Atoms of the same element with the same atomic number

Answer 7

Isotopes

Question 8

Spontaneously decay to daughter isotope

Answer 8

Parent Isotopes or Radioactive isotopes

Question 9

Earth’s earliest history

Answer 9

Hadeon eon

Question 10

The earth’s crust had cooled enough

Answer 10

Archeon eon

Question 11

Diverse groups of fossils

Answer 11

Proterozoic Eon

Question 12

Majority of microscopic organisms algae, fungi, plants and animals lived

Answer 12

Phanerozoic eon

Question 13

Age of animals

Answer 13

Cenozoic (recent life)

Question 14

Age of dinosaurs

Answer 14

Mesozoic (middle life)

Question 15

Age of fishes

Answer 15

Paleozoic

Question 16

The rate of radioactive is constant (t or f)

Answer 16

True

Question 17

period refers to the earliest part of Earth’s history. The earth started cooling and the outer edge of the planet solidified from molten lava to a solid crust.

Answer 17

Precambrian eon