Other
Are We a Democracy or a Republic?
An essay on the present political state in America contending the country is leaning further towards a republican form of government instead of a democracy. Defines and explains the major differences between democracy and republicanism...
TeachEngineering
Teach Engineering: Sounds Like Music
Music can loosely be defined as organized sound. The activity objectives, understanding sound is a form of energy, understanding pitch, understanding sound traveling through a medium, and being able to separate music from sound, can...
University of Texas at Austin
Introduction to French Adverbs
Very useful intro to adverbs in general - defines adverbs, contrasts with adjectives, explains how to form in French.
Encyclopedia of Earth
Encyclopedia of Earth: Physics & Chemistry: P H
Explains what pH is and its use in defining what acids and bases are. Also talks about the importance of pH for regulating metabolism in life forms. Includes a chart showing the pH values of common liquids. (Published: July 30, 2010)
CK-12 Foundation
Ck 12: Acid Base Definitions
[Free Registration/Login may be required to access all resource tools.] In this module, define acids and bases and distinguish between Arrhenius and Bronsted-Lowry definitions to predict products in acid-base reactions that form water.
Georgia State University
Georgia State University: Hyper Physics: Kinetic Energy
This site from Georgia State University Physics Department defines kinetic energy and compares and contrasts it with other forms of energy. Provides an equation and links to further, more-detailed information.
Other
Science Explained: Montserrat Volcano
Read an illustrated description of how an undersea volcanic eruption formed the Caribbean island of Montserrat. Includes a lengthy description of volcanic processes and defines many volcanic terms, such as lahar, tephra, and pyroclastic...
Khan Academy
Khan Academy: Geometry in the Game
The game of football provides numerous opportunities to see geometry at work. No matter what the form, geometry helps us understand specific experiences and it especially helps us define and enjoy the games we play.
Other
Pghbridges: Bridge Basics
Site defines four main factors (span, material, placement of the travel surface in relation to structure, and form) that should be considered when designing a bridge.