Georgia Department of Education
Ga Virtual Learning: Historical Geology
In this interactive tutorial you will explore how geologists use clues in rocks to determine the order in which rocks formed. Learn how principles of radioactivity are used to assign actual ages to rocks. Students will explore fossils...
US Geological Survey
The Numeric Time Scale
This is a good source for getting an in-depth description of using radioactive decay to measure the ages of rocks. In addition to describing the process of radiometric dating, this resource also includes a geologic time scale and four...
Estrella Mountain Community College
Online Biology Book: Paleobiology: Fossils and Time
Find out how fossil evidence has been the major link to learning about Earth's geologic history. See several illustrated interpretations of a geologic time scale in this online biology textbook.
US Geological Survey
Relative Time Scale
This is a good resource for anyone who wants to understand the historical development that led to our understanding of relative dating. This site also has links to index fossils and a table of geologic time.
Other
Utah Geological Survey: How Do Geologists Know How Old a Rock Is?
Geologists generally know the age of a rock by determining the age of the group of rocks, or formation, that it is found in. The age of formations is marked on a geologic calendar known as the geologic time scale. Development of the...
Other
Black Hills Institute of Geological Research: All About Fossils
The Black Hills Institute of Geological Research is a world-renowned center for paleontology. Here they describe in clear language how fossils are formed and preserved, and what information they give us about the past, particularly in...
American Geosciences Institute
American Geosciences Institute: Earth Science Week: Texas Rocks
For this investigation, students start exploring the U.S. Geological Survey's (USGS) online version of the geologic map of Texas. The geologic time scale shown will help them figure out how old the rocks are in various parts of Texas.
Science Education Resource Center at Carleton College
Serc: My Geologic Address: Locating Oneself in Geologic Time and Process
Students find a local location on a series of geologic maps (local,regional,and global) working from small to large scale. Map keys and map features are consulted in order to compose a "geologic address" from the most specific to the...
Alberta Online Encyclopedia
Alberta Online Encyclopedia: Geology
The geology of Alberta is profiled on this site. Drop menus reveal sub-topics ..geological time scale, rock formations in Alberta, and so forth.Graphics and maps are included.
University of California
Ucmp: Sequencing Time
Lesson plan in which young scholars place events in sequence, comparing their life to the history of the Earth.
American Geosciences Institute
American Geosciences Institute: Earth Science Week: Houston Activity: Texas Rocks
Using a geologic time scale and map students investigate the rocks in their area.
CK-12 Foundation
Ck 12: Fourth Grade Science: Earth Science: Relative Ages of Rocks
[Free Registration/Login may be required to access all resource tools.] Looks at how stratigraphy can be used to determine the relative ages of rocks, how unconformities occur, ways to match rock layers in different areas, and how...
Georgia Department of Education
Ga Virtual Learning: Earth and Life History
In this amazingly comprehensive tutorial you will learn about the geological and environmental changes that occurred during the geologic time scale.
ClassFlow
Class Flow: The Earth's History
[Free Registration/Login Required] This flipchart is a lesson on the geologic history of the Earth. It covers the four main eras of the geologic time scale: Precambrian, Paleozoic, Mesozoic, and Cenozoic. Characteristics of each era are...
Open Curriculum
Open Curriculum: Studying the History of Life
This in-depth article illustrates the concept of geologic time, and helps the learner understand why fossils are rare.
CK-12 Foundation
Ck 12: Life Science: Timeline of Evolution
[Free Registration/Login may be required to access all resource tools.] For life to evolve from simple single-celled organisms to many millions of species of prokaryotic species to simple eukaryotic species to all the protists, fungi,...
PBS
Nova: A Brief History of Earth
This timeline is a good resource if you are looking for brief descriptions of the geologic periods. Descriptions include pictures of common organisms for each period and the range of time covered by each period.
CK-12 Foundation
Ck 12: Biology: History of Life
[Free Registration/Login may be required to access all resource tools.] This comprehensive lesson by CK-12 explains how scientists learn about the past by examining and dating fossils.
CK-12 Foundation
Ck 12: Biology: History of Life
[Free Registration/Login may be required to access all resource tools.] Describes how scientists learn about the past by examining and dating fossils.
Science Education Resource Center at Carleton College
Serc: How Many Is a Million?
A visualization activity where students can conceptualize the age of the Earth by observing dots on paper, making calculations and estimations, and discussing their findings with classmates.
Other
Milwaukee Public Museum: The Virtual Silurian Reef
A virtual tour of a Silurian reef. Includes information on geologic principles, the geologic time scale, and the Silurian period. Explores Silurian reefs and reef organisms.
CK-12 Foundation
Ck 12: Biology: Evolution of Multicellular Life Study Guide
This comprehensive study guide covers the main terms and concepts needed for a unit on the evolution of multicellular life.
Science Struck
Science Struck: Flora and Fauna of the Ordovician Period
Describes plants and animals that lived during the Ordovician Period, where it falls in the geologic time scale, tectonic activity happening then, the climate and environment, and extinction events.
Georgia Department of Education
Ga Virtual Learning: Ap Biology: Evolutionary Biology
Through informational text, interactive activities, animations, and video clips, students investigate evolutionary biology.
Other popular searches
- Geologic Time Scale Tests
- Geologic Time Scale Models
- Geologic Time Scale I
- Geologic Time Scale Lab
- Geologic Time Scale Unit
- Geologic Time Scale Biology
- Geologic Time Scale Posters
- Geologic Time Scale Colorado