81. IPL Teenspace Term paper help with A+ Research Writing Find ideas for What to Read planetdiary.com/ PlanetDiary records the events and phenomena that affect earth and its http://ipl.si.umich.edu/div/teen/browse/gh5300/

82. Homework Help From BoatSafeKids - Nautical Know How Thanking you in advance for your help in this matter, Jami Josh. If you assume theearth is perfectly round, (it is slightly flatter at the poles), there are http://www.boatsafe.com/kids/leagues.htm

Boating Courses Boating Tips Boating Contest Safety Links ... Contact Us Parents get help at BoatSafeKids Frank writes: My son is reading 20,000 Leagues Under The Sea and asked me what distance a league is. Also, he wanted to know what the water pressure per square inch per foot of depth under water is. Your help would be greatly appreciated. A league is a measurement of length used in estimating sea distances. Its length varies among different nations. In Great Britain, France, the US and Spain the league has a recognized length of 6,075 yards. (5,554.9 meters) As for the second part of your question, the water pressure increases the deeper you go. At the surface the atmospheric pressure is 14.7 PSI (pounds per square inch). For each foot of water depth the pressure increases by .445 PSI. You then have to add this to the atmospheric pressure to get the absolute pressure you are experiencing. In diving, each 33 feet adds an additional "atmosphere" or adds an additional 14.7 PSI to your body. As an example, at a water depth of 33' what would the pressure be?

83. Welcome To DiscoverySchool.com! DiscoverySchool Offers Clipart, Free Teaching Re parents, students, and teachers, earth Science Avalanche!, DinosaurDetectives, Rocks, and more great lesson plans. Video Clips Take http://school.discovery.com/

All DiscoverySchool Students Teachers Parents This Week's Challenge: Colorful Crime Clip Art Gallery Choose from hundreds of original clip art pieces and animations. Video Clips Take a sneak peek at Discovery School videos in our new screening room. Create your own library of award-winning teaching tools New for Spring 2003: Click here to see new products focused to your curriculum! Site Map About Us Feedback Discovery.com

84. Earth Day - A Very Brief Overview - Forestry Several Significant earth Day Sites http//www.earthday.net/ http//earthday.wilderness http://forestry.about.com/library/weekly/aa042202a.htm

zfp=-1 About Homework Help Forestry Search in this topic on About on the Web in Products Web Hosting Forestry with Steve Nix Your Guide to one of hundreds of sites Home Articles Forums ... Help zmhp('style="color:#fff"') Subjects ESSENTIALS 100 Top Trees of North America Forestry 101 How to ID a Tree ... All articles on this topic Stay up-to-date! Subscribe to our newsletter. Advertising Free Credit Report Free Psychics Advertisement Who founded Earth Day? Former U.S. Senator from Wisconsin, Gaylord Nelson developed the Earth Day idea. Leaving the Senate in 1981, Nelson now serves as counselor of The Wilderness Society and continues to promote Earth Day. When was the first Earth Day? Twenty million participants attended rallies and teach-outs all over the United States in 1970, the first year Earth Day was organized. Is there still an Earth Day? Yes. Every April 22. This is the 32nd anniversary of Earth Day and the theme for the latest event is "Protect Our Home." What organizations support Earth Day? Earth Day is supported by numerous organizations. Some of these organizations can be found by reviewing the Earth Day Network board of directors: John Adams Natural Resources Defense Council Rebecca Adamson First Nations Development Institute Deb Callahan League of Conservation Voters Philip Clapp National Environmental Trust Susan Comfort Center for Environmental Citizenship Ken Cook Environmental Working Group Jed Goldberg Earth Day Canada Jan Hartke Earth Voice Denis Hayes , Earth Day Network Chair and CEO, The Bullitt Foundation Pamela Lippe

85. About Geology -- The Complete Guide To Earth Science earth science encompasses everything from outer space to the earth's fiery core, from the most ancient fossils to the landslides and earthquakes of today. http://geology.about.com/

zfp=-1 About Homework Help Geology Search in this topic on About on the Web in Products Web Hosting Geology with Andrew Alden Your Guide to one of hundreds of sites Home Articles Forums ... Help zmhp('style="color:#fff"') Subjects ESSENTIALS The Image Gallery Gallery of Peaks Index of Articles ... All articles on this topic Stay up-to-date! Subscribe to our newsletter. Advertising Free Credit Report Free Psychics Advertisement In The Spotlight Mon, Apr 7, 2003 Geo-Whiz Quiz 14: Geoscientists You aced the Rocks quiz. You know the minerals, hands down. Fossils don't faze you. But do you know the PEOPLE who built geology and continue to grow it today? Try this daunting dozen questions and remember: it's not what you know, but WHO you know! More: The Parade of Heroes - The old masters were real people once At the Earth's Core OK, you've enjoyed "The Core" but you know the science in the movie is bogus. Not all of it is! The deep Earth is a pretty interesting place. Why not start at the bottom with this article? More: Into the Mantle - while you're down there, stick around More: Hollywood Erupts!

86. Earth Science Basics: Geology And The Earth's Crust This Dynamic earth The definitive http://geology.about.com/cs/basics_crust/

zfp=-1 About Homework Help Geology Search in this topic on About on the Web in Products Web Hosting Geology with Andrew Alden Your Guide to one of hundreds of sites Home Articles Forums ... Help zmhp('style="color:#fff"') Subjects ESSENTIALS The Image Gallery Gallery of Peaks Index of Articles ... All articles on this topic Stay up-to-date! Subscribe to our newsletter. Advertising Free Credit Report Free Psychics Advertisement Basics of Geology Guide picks Basic resources about the shape of the land, erosion, the Earth's crust, and plate tectonics. Illustrated Glossary of Geologic Terms A widely used list of 900 entries from Iowa State University, especially good for rock and geomorphic terms. If you can't find something there, try my list of online glossaries WORLDBATH View the world's bathymetry and topography, anywhere you like, from Lamont-Doherty Geological Observatory. Landform Gallery My compilation of photos showing different landforms, along with notes and explanations. Landslides and Other Earth Movements From your About Geology Guide, an introduction to mass wasting and why it's so important. Glacier The best all-around introduction to the subject of glaciers on the Web, from Rice University.

87. Geography Home Page Includes articles, annotated links, daily geographic quizzes, bulletin board, and chat room.Category Science Social Sciences Geography Education...... earthSun Interaction. http://geography.about.com/

zfp=-1 About Homework Help Geography Search in this topic on About on the Web in Products Web Hosting Geography with Matt Rosenberg Your Guide to one of hundreds of sites Home Articles Forums ... Help zmhp('style="color:#fff"') Subjects ESSENTIALS World Atlas and Maps Geography Answers Glossary ... All articles on this topic Stay up-to-date! Subscribe to our newsletter. Advertising Free Credit Report Free Psychics Advertisement In The Spotlight Mon, Apr 7, 2003 A Wandering Easter: Its Ways and Woes The date of Easter Sunday, a so-called movable feast day in the Christian Church year, may seem a mystery to many who celebrate it. Guest columnist Farrell Brown explains the reasons Easter Sunday moves across the calendar. Tool: Geography Glossary - Definitions of key terms in geography. More: Geography FAQ - Answers to your geographical questions. Maps and geographical information for every country, state, continent and ocean. Start your search for maps and country information here! Special: Maps of Iraq - Maps and geography of Iraq. Special: Maps of North Korea - Maps and geography of North Korea.

88. Photos And Images Of The Earth earth From Space Sixteen excellent photographs by Space Shuttle astronauts http://geography.about.com/cs/photos/

zfp=-1 About Homework Help Geography Search in this topic on About on the Web in Products Web Hosting Geography with Matt Rosenberg Your Guide to one of hundreds of sites Home Articles Forums ... Help zmhp('style="color:#fff"') Subjects ESSENTIALS World Atlas and Maps Geography Answers Glossary ... All articles on this topic Stay up-to-date! Subscribe to our newsletter. Advertising Free Credit Report Free Psychics Advertisement Photos and Images of the Earth Guide picks Satellite and aerial photos and images of the earth and even your home. Landscapes and Landmarks Resources for photos of places, landscapes, people, and cultural artifacts around the world. Earth Photo From your About Guide, the classic (and beautiful) photograph of the earth from space. Geo-Cams Andrew Alden, About.com's Geology Guide, has created a great collection of links to worldwide web-cameras of geographic and geologic interest. Cities of the World Online Black and white aerial photographs of a portions of a dozen U.S. cities (scroll to the bottom of the page to see the list). Some photos are quite oblique and grainy so they're difficult to interpret. Clickable Map of the World This world map has a plethora of blue dots, each representing a downloadable space shuttle image.

89. Geoarchaeology And Related Subjects so it only makes sense that we ought to study the geology of the earth. http://archaeology.about.com/cs/earthsciences/

zfp=-1 About Homework Help Archaeology Search in this topic on About on the Web in Products Web Hosting Archaeology with K. Kris Hirst Your Guide to one of hundreds of sites Home Articles Forums ... Help zmhp('style="color:#fff"') Subjects ESSENTIALS Archaeology Glossary Book Catalog Guide to Graduate Schools ... All articles on this topic Stay up-to-date! Subscribe to our newsletter. Advertising Free Credit Report Free Psychics Advertisement Earth Sciences Guide picks Since archaeology is mostly done on the grounds, many related sciences assist the archaeologist in his or her work. Archaeoastronomy The study of how prehistoric civilizations understood the passage of time. CLIMAP A project developed by the NOAA Paleoclimatology Program and the World Data Center in the 1970s using computer models to develop a detailed climatological map of the world at 18,000 years ago. Erosion and Slope Wash Bibliography From your About.com guide, a collection of references about how erosion and slope wash effect archaeological sites. Geoarchaeology Most archaeological remnants are found in the dirt, so it only makes sense that we ought to study the geology of the earth. Faunal and Floral Studies The study of plants and animals in archaeological contexts.

90. About - Earth, Sea & Sun This online article give you an indepth discussion of how the earth's and moon's http://weather.about.com/cs/earthsun/

zfp=-1 About Homework Help Weather Search in this topic on About on the Web in Products Web Hosting Weather with Edward Klappenbach Your Guide to one of hundreds of sites Home Articles Forums ... Help zmhp('style="color:#fff"') Subjects ESSENTIALS Basic meteorology Your weather glossary Weather news network ... All articles on this topic Stay up-to-date! Subscribe to our newsletter. Advertising Free Credit Report Free Psychics Advertisement Guide picks Explore how the physical environmentEarth, sea, and suninteract to shape climate and weather patterns around the globe. Worldwide water crisis looms Scienctists expect the the average supply of water per person to drop by one third over the next 2 decades. This means that if we continue to consume water at present rates, over 2.7 billion people will face severe water shortages by the year 2025. BBC - World water crisis This in-depth website deals with the many and various aspects of the world's freshwater supply. Learn what challenges we face as population growth and climate change impact this invaluable resource. Alaskan glaciers raise sea level The thinning of Alaskan glaciers over the past five years is making significant contributions to rising sea levels.

91. Steve Fossett's Non-Circumnavigation Of The Earth (Around the equator the maximum circumference of the earth is 24,901.55 http://geography.miningco.com/library/weekly/aa071402a.htm

zfp=-1 About Homework Help Geography Search in this topic on About on the Web in Products Web Hosting Geography with Matt Rosenberg Your Guide to one of hundreds of sites Home Articles Forums ... Help zmhp('style="color:#fff"') Subjects ESSENTIALS World Atlas and Maps Geography Answers Glossary ... All articles on this topic Stay up-to-date! Subscribe to our newsletter. Advertising Free Credit Report Free Psychics Advertisement Steve Fossett's Non-Circumnavigation of the Earth Join the Discussion "Do you think that Steve Fossett's trip 'around the world' should be considered a circumnavigation of the globe?" Post your thoughts on the Geography Forum Related Resources Map Projections Wacky Geography World Facts by Matt Rosenberg July 14, 2002 So why the hoopla and congratulations? I'm not sure. Fossett's flight probably qualified as a "circumnavigation" under the less-stringent circumnavigation rules established by the Fédération Aéronautique Internationale (the World Air Sports Federation). The international governing body of aeronautics states (according to the official Spirit of Freedom Site logs really short, a "circumnavigation" along that parallel would only require 12,482.64 miles of travel.)

92. Product Summary - Review Of Bright Earth: Art And The Invention Of Color By Phil However, one read of Bright earth and science writer Philip Ball made me forget http://arthistory.about.com/library/weekly/aaprbrightearth.htm

zfp=-1 About Homework Help Art History Search in this topic on About on the Web in Products Web Hosting Art History with Andrea Mulder-Slater Your Guide to one of hundreds of sites Home Articles Forums ... Help zmhp('style="color:#fff"') Subjects ESSENTIALS Study Guides Biographies What's It Worth? ... All articles on this topic Stay up-to-date! Subscribe to our newsletter. Advertising Free Credit Report Free Psychics Advertisement Product Summary Bright Earth: Art and the Invention of Color by Philip Ball Bright Earth: Art and the Invention of Color by Philip Ball Guide Rating - Pros Cons The Bottom Line - Well worth the read, "Bright Earth" is a wonderful addition to any library. Visit the Publisher's Website Product Description Hardcover: 382 pages. Brilliantly illustrates the strong connection between art and science. Visit the Publisher's Website Guide Review The Science of Art I was skeptical about an art book written by a Doctor of Physics and former chemistry major. However, one read of "Bright Earth" and science writer Philip Ball made me forget my hesitation. In addition to soaking in facts about cow's urine, shellfish and crushed beetles as pigment sources, this book offers insight into the idea that works of art throughout history were influenced a tremendous amount on pigments currently available at the time. Proof that color availability not only had enormous influence on art but in fact triggered entire movements, is presented here in a pleasurable way. You will never look at a painting in the same way again.

93. CNNfyi.com - Sun Storms Creating A Stir On Earth - June 9, 2000 Sun storms creating a stir on earth. Geomagnetic disturbances began Thursdaywhen the first shock wave reached the earth's magnetosphere. http://www.cnn.com/2000/fyi/news/06/09/geomagnetic.storms/

CNNfyi.com CNN.com CNNSI.com CNNfn.com The Web Student Pages Mainpage News Student Bureau School Tools Game Room Teacher Pages Mainpage Subject Areas Education News Teaching Tools CNN NEWSROOM More Resources Sun storms creating a stir on Earth A solar flare erupts from the sun's upper left central region June 9, 2000 Web posted at: 9:33 p.m. EST (0133 GMT) DISCUSSION-ACTIVITY RELATED SITES WASHINGTON (CNN) It's storming on the sun, and the blasts of solar particles spewing from that star are disrupting radio transmissions on Earth. The massive bursts of charged particles are part of the sun's peak in its 11-year solar activity cycle. Although the particles have produced scattered radio blackouts, they are not expected to significantly disrupt telecommunications or electrical power. HOMEWORK HELP Space Environment Center Solar flares More Homework Help Geomagnetic disturbances began Thursday when the first shock wave reached the Earth's magnetosphere. During that time, Aurora watchers might have seen particularly strong Northern Lights, while power grids and satellites may have experienced electrical problems, according to space weather forecasters. The U.S. Space Environment Center in Boulder, Colorado, issued an outlook for strong geomagnetic storms. They occur when bubbles of charged gas erupt off the sun, washing out over the planets in the solar system.

94. Famous Earth Scientists Famous earth Scientists Other Nations. http://geology.miningco.com/cs/biographies/

zfp=-1 About Homework Help Geology Search in this topic on About on the Web in Products Web Hosting Geology with Andrew Alden Your Guide to one of hundreds of sites Home Articles Forums ... Help zmhp('style="color:#fff"') Subjects ESSENTIALS The Image Gallery Gallery of Peaks Index of Articles ... All articles on this topic Stay up-to-date! Subscribe to our newsletter. Advertising Free Credit Report Free Psychics Advertisement Famous Earth Scientists Guide picks The Parade of Heroes From your About Geology Guide, a look at the difference between the scientist's life and the scientist's biography. All of the biographies are here in alphabetical order. History of Earth Science Sites about the setting in which these scientists carried out their professions. Famous Earth Scientists - Women Famous Earth Scientists - American Famous Earth Scientists - British Isles Famous Earth Scientists - Canadian ... Email this page! Sponsored Links Amateur Geologist Love geology? Amateur Geologist wants to share our joy of exploring the geology of our world and nature itself to all by providing information, books, tools and more to our fellow amateur geologists. http://www.amateurgeologist.com/

95. Earth Science Basics: The Deep Earth Like It Hot A technical essay on the temperature structure of the earth, from the http://geology.miningco.com/cs/basics_deep/

zfp=-1 About Homework Help Geology Search in this topic on About on the Web in Products Web Hosting Geology with Andrew Alden Your Guide to one of hundreds of sites Home Articles Forums ... Help zmhp('style="color:#fff"') Subjects ESSENTIALS The Image Gallery Gallery of Peaks Index of Articles ... All articles on this topic Stay up-to-date! Subscribe to our newsletter. Advertising Free Credit Report Free Psychics Advertisement Basics of the Deep Earth Guide picks Basic resources about the mantle and core of the Earth, and the methods we use to study them. Into the Mantle First of a series of seven articles taking you through the Earth's mantle, from your About Geology Guide. The Earth's Core From your About Geology Guide, an introduction to the center of the Earth, as we know it after a century of research. Deep-Earth Articles Over a dozen more articles like the two above, delving into details of the mantle and core. Divisions in the Earth's Interior A clear, annotated diagram of the Earth's cross section, from the "Views of the Solar System" site. Inside the Earth The layers of the planet shown and labeled, suitable for homework, from the U.S. Geological Survey.

96. Celebrating Earth Day Around The Web Celebrate earth Day Join BBC Science in their celebration of earth Day 2002. http://animals.about.com/library/weekly/aa042202a.htm

zfp=-1 About Homework Help Animals/Wildlife Search in this topic on About on the Web in Products Web Hosting Animals/Wildlife with Laura Klappenbach Your Guide to one of hundreds of sites Home Articles Forums ... Help zmhp('style="color:#fff"') Subjects ESSENTIALS Learning center Conservation toolbox Wild about books ... All articles on this topic Stay up-to-date! Subscribe to our newsletter. Advertising Free Credit Report Free Psychics Advertisement Celebrating Earth Day around the Web Explore the Web for Earth Day news, activities, and events Dateline: 22 April 2002 Earth Day 2002 Photo (c) Laura Klappenbach, 1991, licensed to About.com Inc. Join the discussion How are you celebrating Earth Day 2002? What conservation issues are most important to you? Join the Earth Day activities discussion Earth Day around the Web Browse these links to learn more about Earth Day activities: Earth Day Network The Wilderness Society Earth Day page Earth Day 2002 Celebrate Earth Day Join in today's Earth Day activities as people from around the world pay special attention to the environmental challenges that face our society and planet. History of Earth Day Earth Day was first conceived by Senator Gaylord Nelson in the early 1960's. Senator Nelson, whose concern that environmental issues were not being addressed in the political arena, convinced President Kenedy to undertake a five-day, eleven-state conservation tour in 1963. Though the tour failed to bring conservation issues into the spotlight to the degree Senator Nelson had hoped, a movement had indeed begun.

97. Asteroid On Collision Course With Earth (NSAS) Short article examining how much danger Asteroid 2002 NT7 poses to the earth.Category Science Astronomy Near earth Objects Near Misses...... Had this object struck the earth, it would have released the energy of a http://space.about.com/library/weekly/aa072602a.htm

zfp=-1 About Homework Help Space/Astronomy Search in this topic on About on the Web in Products Web Hosting Space/Astronomy with Nick Greene Your Guide to one of hundreds of sites Home Articles Forums ... Help zmhp('style="color:#fff"') Subjects ESSENTIALS Free Sky Maps Free Virtual Space Greeting Cards Astronomy/Space Calendar ... All articles on this topic Stay up-to-date! Subscribe to our newsletter. Advertising Free Credit Report Free Psychics Advertisement Asteroid On Collision Course With Earth How Much Danger Does Asteroid 2002 NT7 Pose to Earth? Join the Discussion "What are the possible methods of averting such a catastrophe? " Related Resources Comet Hunter Dies Space Man Overboard Astronomy History - Galileo From Other Guides Science Fiction Asteroid Movies Urban Legends: The Sky Is Falling A Quick Death For the Dinosaurs Elsewhere on the Web NASA Near Earth Object Program (NASA) Comet - Asteroid Impact Torino Scale It appears that life may be imitating art. If you watched either of the 1998 movies Deep Impact or Armageddon , you may have an idea of the future that faces Earth.

98. High School Hub Academic resources for high school students and teachers.Category Kids and Teens Directories......High School Hub http://highschoolhub.org/

Homework Help Biology Chemistry Earth Science English ... World Languages April 2003 Current Events Daily News Quiz Daily SAT Question NOW: News Issues ... Writer's Almanac Learning Activities Chemical Elements French: Numbers German: Food History Timeline ... Zip Codes "Try to learn something about everything and everything about something." T. H. Huxley About HighSchoolHub.org The High School Hub is a noncommercial learning portal to high-quality free online educational resources for high school students. It features interactive learning games, puzzles, and quizzes. It also includes subject guides for English, foreign languages, math, science, and social studies. The High School Hub is and will remain free to the public and free of advertisements. There is no registration and visitors are not tracked. If you have any suggestions for improving the site, please send them to dyann@schmidel.com . You may use these graphics on your web pages to link to the High School Hub. We don't collect personal information from our visitors. http://highschoolhub.org

99. General Geography Frequently Asked Questions - FAQ Index The answer to dozens of geographical questions. http://geography.miningco.com/library/faq/blqzindexgeneral.htm

zfp=-1 About Homework Help Geography Search in this topic on About on the Web in Products Web Hosting Geography with Matt Rosenberg Your Guide to one of hundreds of sites Home Articles Forums ... Help zmhp('style="color:#fff"') Subjects ESSENTIALS World Atlas and Maps Geography Answers Glossary ... All articles on this topic Stay up-to-date! Subscribe to our newsletter. Advertising Free Credit Report Free Psychics Advertisement General Geography FAQ Index Are there any famous people who studied geography? How can I remember the difference between latitude and longitude? How do you find an antipode or point on the opposide side of the earth? How fast does the earth spin? ... Geography Home Page Subscribe to the Geography Newsletter Name Email Email this page! Sponsored Links Life Insurance Quotes: Compare Low Rates Find low cost Life Insurance quotes from multiple nationwide Insurance companies. Free, fast and easy! Apply online. We assist you in finding the right Life Insurance to protect the ones you cherish. http://www.insurance.com/ Sponsored Link Have an Idea, Invention or New Product?

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