Fossils

Question 1

the gaseous portion of the planet

Answer 1

atmosphere

Question 2

the division of Earth’s history into blocks of time covering millions of years (eons, eras, periods)

Answer 2

Geologic Time scale

Question 3

covered with or affected by a glacier

Answer 3

Glaciation

Question 4

rocks formed by magma or lava

Answer 4

Igneous rocks

Question 5

The fossil remains of an organism that lived in a particular geologic age, used to identify or date the rock or rock layer in which it is found

Answer 5

Index fossil

Question 6

scientist who studies fossils and the history of life on Earth

Answer 6

Paleontologist

Question 7

part of geologic time characterized by abundant fossil evidence, the most recent 600 million years

Answer 7

Phanerozoic

Question 8

all geologic time prior to the Phanerozoic Eon characterized by much volcanic activity- the first 4 billion years from the beginning of earth to the phanerozoic- ending with the Cambrian explosion

Answer 8

Precambrian

Question 9

also known as Absolute Dating, the complex procedure of calculating a most precise age of rocks and fossils (Carbon dating is a form of this)

Answer 9

Radiometric dating

Question 10

ages of rock layers are ordered by comparing them to the layers above and below them

Answer 10

Relative dating

Question 11

rock type that most fossils are found in

Answer 11

Sedimentary rocks

Question 12

The continental landmasses have consistently formed, reformed, and moved over time.

Answer 12

True

Question 13

The geological history of the Earth describes major events in Earth’s past including what kinds of rocks existed a long time ago, climate, and lifeforms

Answer 13

true

Question 14

Based on evidence from fossils, scientists have observed life has adapted to various changes on the Earth.

Answer 14

true

Question 15

Throughout Earth’s history, the climate has changed many times.

Answer 15

true

Question 16

Near the end of the Precambrian, there is evidence to suggest an increase in oxygen in the atmosphere due to photosynthesis.

Answer 16

true

Question 17

In a series of undisturbed rock layers, the oldest layers are on the bottom and the youngest layers are on the top.

Answer 17

law of superposition

Question 18

List 3 types of information fossils and rock layers reveal about Earth’s past:

Answer 18

Age of rock layers and organisms
Environmental conditions
Climate
Movement of landmasses and presence of oceans
Adaptations and evolution of organisms over time

Question 19

largest time unit on the geologic time scale

Answer 19

eon

Question 20

remains or traces of organisms preserved from the geologic past

Answer 20

fossils

Question 21

proposed supercontinent, which 200 mya began to break apart

Answer 21

pangea

Question 22

basic unit of the geologic time scale that is a subdivision of an era

Answer 22

periods

Question 23

theory which proposes that earth’s outer shell consists of individual plates which interact in various ways

Answer 23

plate tectonics