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National Snow and Ice Data Center
National Snow and Ice Data Center: All About Glaciers: Types of Glaciers
Provides short descriptions of thirteen types of glaciers.
National Snow and Ice Data Center
National Snow and Ice Data Center: All About Glaciers: The Life of a Glacier
Explains the conditions needed for glaciers to exist, how they begin to form, what causes them to flow, and why they may retreat.
National Snow and Ice Data Center
Nat. Snow and Ice Data Center: All About Glaciers: Where Are Glaciers Located?
Explains where glaciers can be found and what conditions are needed for them to exist. Includes a table showing where glaciers can be found around the world and the approximate areas. These figures were, however, from 2008.
CK-12 Foundation
Ck 12: Earth Science: Types of Volcanoes
[Free Registration/Login may be required to access all resource tools.] Different types of eruptions create different types of volcanoes.
CK-12 Foundation
Ck 12: Earth Science: Radiometric Dating
[Free Registration/Login may be required to access all resource tools.] Elaborates on radioactive decay as a tool for determining the age of certain minerals and other materials, including the limits of the technique.
CK-12 Foundation
Ck 12: Earth Science: Igneous Rocks
[Free Registration/Login may be required to access all resource tools.] Presents igneous rocks, which form from magma, and the two types: dense, dark mafic and less dense, light felsic. Also covers Bowen's Reaction Series.
CK-12 Foundation
Ck 12: Earth Science: Igneous Rock Classification
[Free Registration/Login may be required to access all resource tools.] Presents the classifications of igneous rocks based on silica content.
Department of Defense
Do Dea: Earth Science: Unit 3: Geologic History: Timeline of the Earth [Pdf]
This 2-page handout provides short descriptions of the different aeons, eras, and periods in the Earth's geological history.
Exploratorium
Exploratorium: Ice Stories: Ice and Sediment Cores
Learn how scientists look inside glacial ice sheets by studying ice cores and use the clues found there to learn about past climates.
National Earth Science Teachers Association
Windows to the Universe: Magnetic Field Reversals
Provides a short article, with embedded links, about magnetic reversals and how they might occur.
Science Struck
Science Struck: Relative vs. Absolute Dating
Explains what relative and absolute dating are and some different methods used for each. A Venn diagram is presented showing what characteristics they share and how they differ.
Science Struck
Science Struck: How Does Carbon 14 Dating Work?
Learn about carbon-14 dating and how it works.
Indiana University
Indiana University Bloomington: Geo Notes: Glacial Erratics: Marker Rocks [Pdf]
Describes erratics found in Indiana that were deposited there through the process of glaciation.
University of Saskatchewan (Canada)
Northern Research Portal: "Art and Artists" Exhibit
The Inuit and First Nations people tended to express their culture and history through artistic expression. Highlighted is the various art forms and artists of these people and especially the Northern region of Canada. Included are...