Students conduct a simple test to determine how many drops of each of three liquids can be placed on a penny before spilling over. The three liquids are water, rubbing alcohol, and vegetable oil; because of their different surface tensions, more water can be piled on top of a penny than either of the other two liquids. However, this is not the main point of the activity. Instead, students are asked to come up with an explanation for their observations about the different amounts of liquids a pen
Students will build their own towers using some of the techniques they have learned. The materials will consist of balsa wood and glue. General guidelines are provided, but the students will have a lot of freedom with their design to encourage them to implement what they have learned about structural engineering.
A Place in Space
The students will use a “real” 3D coordinate system. They will have 3 axes at right angles, and a plane (the XY plane) that will be able to slide up and down the Z axis. The students will then be given several coordinates and asked to find these points in space. They will also be asked to find the coordinates of the 8 corners of a box with given dimensions.
Wine cooler depicting a Hanoverian Hussar N081110 APSLEY HOUSE, London. Wine cooler from the Duke of Wellington's Prussian Service, made in Berlin 1817-19. This was a gift to the Duke from the King of Prussia, and here depicts troops commanded by the Duke in France in 1815, in this case a Hanoverian Trooper, Regiment of Luneburg Hussars. WM959_1948.
APSLEY HOUSE, London. Wine cooler from the Duke of Wellington's Prussian Service, made in Berlin 1817-19. This was a gift to the Duke from the King of Prussia, and here depicts troops commanded by the Duke in France in 1815, in this case a Hanoverian Trooper, Regiment of Luneburg Hussars. WM959_1948.
A Dollar as Good as Gold [Statement and testimony before the Subcommittee on Domestic Monetary Policy and Technology, March 17, 2011] Since the expansive Federal Reserve program of quantitative easing began in late 2008, oil prices have almost tripled; gasoline prices have almost doubled. Basic world food prices such as sugar, corn, soybean, and wheat have almos
[Statement and testimony before the Subcommittee on Domestic Monetary Policy and Technology, March 17, 2011]
Since the expansive Federal Reserve program of quantitative easing began in late 2008, oil prices have almost tripled; gasoline prices have almost doubled. Basic world food prices such as sugar, corn, soybean, and wheat have almos
Centers for Disease Control: Severe Acute Respiratory Syndrome
Visitors to this Web site from the Centers for Disease Control (CDC) will find a current and reliable source of information about Severe Acute Respiratory Syndrome (SARS). The FAQs section offers a general overview of the disease and recent outbreak -- a good starting point for finding the facts behind the headline news. The site also offers recent CDC guidelines and recommendations geared toward medical professionals, travel advisories and related concerns, and links to World Health Organizatio
PEER Strong Motion Database
Processed by Dr. Walt Silva of Pacific Engineering and supported by the Pacific Earthquake Engineering Research Center (PEER) at the University of California Berkley, the PEER Strong Motion Database "contains 1557 records from 143 earthquakes from tectonically active regions." Searches can be done by earthquake, type of plate movement (e.g., strike slip), magnitude, and several other criteria. The correct browser and JAVA version even allows dynamic sorting and interactive plotting of data.
Directory of Research Systematics Collections
The Directory of Research Systematics Collections (DRSC) offers online access to information about the natural history research collections of museums and institutions across the US. The DRSC -- a joint project of the Natural Science Collections Alliance and the US Geological Survey Biological Resources Division -- offers a convenient, one-stop resource for locating research specimens. The DRSC's simple interface allows searches by parent institution name or by taxonomic and geographic criteria
British Geomorphological Research Group
The British Geomorphology Research Group (BGRG) developed this website addressing its "aim to provide a community and services for all those involved in teaching or research in geomorphology." Visitors will find geomorphological news as well as information and links for upcoming international conferences and seminars. Educators can find assistance in promoting geomorphology in schools. The website provides downloads of recent newsletters, which discuss various geomorphological meetings and studi
Deepwater Gulf of Mexico 2002: America's Expanding Frontier
A recent release from the US Government's Minerals Management Service is entitled Deepwater Gulf of Mexico 2002: America's Expanding Frontier. The report "details the extraordinary growth of oil and gas industry activity in the deepwater (1,000 feet of water or more) Gulf over the past seven years and its anticipated continued growth." The near 150-page downloadable Adobe Acrobat (.pdf) file contains information on leasing, drilling and development, reserves and production, summaries and conclus
Speex: A Free Codec for Free Speech
Speex is an audio codec used to compress speech-based audio, and is an open source product that can be freely downloaded at this site. "The Speex Project aims to lower the barrier of entry for voice applications by providing a free alternative to expensive proprietary speech codecs." Extensive documentation and the codec's source code are also available. In addition to the download, this site includes information for developers to contribute to the project. Several audio samples that are compres
Created by Forum One Communications and funded by the Corporation for Public Broadcasting, Backyard Jungle is a kid-friendly Web site where members can upload photos, drawings, and descriptions of their own backyard or other natural area to share with an online community. Membership registration is straightforward and free of charge. While Backyard Jungle does not include any formal lesson plans or educational activities, it offers kids a fun incentive to explore and communicate about their natu
Sometimes learning or at least sparking an interest in a subject can be accomplished through pictures. The Geoscapes Photography Web site by Emeritus Professor of Geology John A. Karachewski contains spectacular photos of various geologic formations from the western US. By clicking on the main gallery link, students can choose from various locations such as northern California, Point Reyes National Seashore, Colorado, and Utah. Each link then contains the photographs and simple descriptions of t
Protecting Applications against Malice Using Adaptive Middleware
Security in distributed computing systems is a very important area of research, especially as malicious behavior is a growing cause of concern for businesses and organizations. This paper addresses an emerging method of maintaining security in untrustworthy environments. Until recently, the operating system was the only means of protecting data; the authors discuss a more elaborate technique of using middleware as a second level of security. "When integrated effectively, this multi-level approac
DesignNotes.com: Design Archives
This novel site gives examples of circuits for a wide range of applications. It is suitable for people looking for specific instructions for a predetermined project or for anyone with an electronics hobby. Circuit diagrams, component lists, and a concise explanation are provided for each item. Many of the circuits were submitted by other visitors to the site, and further contributions are encouraged. Several categories are shown, including audio, motor control, and digital signal processing. Alt
According to its author, this site was created to provide the public with an "'upper secondary' math tutorial." It is immediately apparent that this can include many different subject areas and, indeed, the site addresses topics ranging from trigonometry to linear algebra to calculus. Each concept is introduced with clear, concise explanations and illustrative figures, and several sample problems are given with accompanying solutions. The only minor fault with this site is the use of plain text
Earthguide is an educational resource for students and teachers developed by the California Space Institute at Scripps Institution of Oceanography and the University of California San Diego. Features include in-depth stories, brief topics, and news -- all related to a variety of oceanic and atmospheric science subjects. The section of links and resources is quite valuable, with a large number of links organized by topic, many with brief descriptions.
Fire Research Information Services
Maintained by the National Institute of Standards and Technology (NIST), this site is a hub of information and other resources related to fire research. It provides direct, free access to many Building and Fire Research Laboratory (BFRL) publications, test data, and reports. Some of the experimental fire data represents tests of residential fire sprinklers, fire fighting agents, and diffusion flame measurements, to name a few. A large collection of fire simulation and modeling programs developed
Deep Content: Guide to Effective Searching of the Internet
This outstanding website is, without question, one of the most comprehensive online resources for learning efficient Internet search techniques. The guide begins with some fairly non-technical background about the Internet and explains why searching such a massive amount of information is more complex than it seems. The general process used by search engines to rank webpages is described. After covering the fundamentals of search engine operation, the guide discusses some best practices to use w
Laboratory of Michael Blades
Located within the Chemistry Department at the University of British Columbia, the Laboratory of Michael Blades studies the "development, characterization, and application of optical and mass spectroscopic methods for chemical analysis." Visitors can download posters to learn about the group's work involving two and three laser ion trap mass spectrometry and fluorescence spectroscopy. The website discusses the group's creation of atmospheric pressure plasma on a chip as a new way of forming an a