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Tornadoes are the most intense storms on the planet, and they’re never discussed without at least some mention of the term wind shear. Many of us sitting at home, though, have no idea what wind shear is, or if we do, how it affects tornado production.
What is Wind Shear
Wind shear, although it might sound complex, is a... | <urn:uuid:7400301c-e625-46d5-be90-1020cf8d52f8> | 4.15625 | http://cloudyandcool.com/2009/05/05/wind-shear-and-tornadoes/ |
Is this bone a Neanderthal flute?
Cave Bear femur fragment from Slovenia, 43+kya
DOUBTS AIRED OVER NEANDERTHAL BONE 'FLUTE'
(AND REPLY BY MUSICOLOGIST BOB FINK)
Science News 153 (April 4, 1998): 215.
By B. Bower
Amid much media fanfare, a research team in 1996 trumpeted an ancient, hollowed out bear bone pierced on one... | <urn:uuid:f166f15d-9976-40ed-8a49-8bed360001ff> | 3.71875 | http://cogweb.ucla.edu/ep/FluteDebate.html |
In some people, macular degeneration advances so slowly that it has little effect on their vision. But in others, the disease progresses faster and may lead to vision loss. Sometimes only one eye is affected, while the other eye remains free of problems for many years. People with dry macular degeneration in one eye of... | <urn:uuid:6aba2b8d-0f86-4d64-b8af-a03c21e98c63> | 3.328125 | http://doctors-hospital.net/your-health/?/19810/Reducing-Your-Risk-of-Macular-Degeneration~Symptoms |
A bullock cart or ox cart is a two-wheeled or four-wheeled vehicle pulled by oxen (draught cattle). It is a means of transportation used since ancient times in many parts of the world. They are still used today where modern vehicles are too expensive or the infrastructure does not favor them.
Used especially for carryi... | <urn:uuid:4dcad241-2b6b-4970-9112-c67a47a29a2c> | 3.453125 | http://en.wikipedia.org/wiki/Bullock_cart |
Deep-space communication improved with electromagnetic radiation antenna
- Robert C. Dye
- Technology Transfer
- (505) 667-3404
Electromagnetic radiation antenna has potential for deep-space communication
- Directed Energy
- Long-range communications
- Medicine (Oncology)
- RADAR imaging applications are countermeasure... | <urn:uuid:79bc5d65-38cf-489f-b8c5-6800ff88c6f7> | 3.34375 | http://moe@lanl.gov/collaboration/tech-transfer/tech-transfer-summaries/electromagnetic-radiation-antenna-has-potential-for-deep-space-communication.php |
The test team views the use of a pulley as an intermediate step only, and has planned to shift to a reliance on windlasses like those that apparently were used to hoist sails on Egyptian ships.
"The whole approach has been to downgrade the technology," Gharib said. "We first wanted to show that a kite could raise a hug... | <urn:uuid:7989d2d3-3e6d-4a4d-ad8e-e7b19882a89a> | 3.578125 | http://news.nationalgeographic.com/news/2001/06/0628_caltechobelisk_2.html |
Classroom Activities for Teaching Sedimentary GeologyThis collection of teaching materials allows for the sharing of ideas and activities within the community of geoscience teachers. Do you have a favorite teaching activity you'd like to share? Please help us expand this collection by contributing your own teaching mat... | <urn:uuid:f4b8146e-83a2-43e4-8f2c-b3c235ae8afb> | 3.875 | http://serc.carleton.edu/NAGTWorkshops/sedimentary/activities.html?q1=sercvocabs__43%253A206 |
By JOHN CARTER
When Abraham Lincoln died from an assassin’s bullet on April 15, 1865, Edwin Stanton remarked to those gathered around his bedside, “Now he belongs to the ages.”
One of the meanings implied in Stanton’s famous statement is that Lincoln would not only be remembered as an iconic figure of the past, but tha... | <urn:uuid:d53f9812-f42b-4039-a509-209a2d5aac9b> | 3.390625 | http://weatherforddemocrat.com/opinion/x1303543173/NOTES-FROM-THE-JOURNEY-Lincoln-is-still-one-for-the-ages |
Science Fair Project Encyclopedia
The chloride ion is formed when the element chlorine picks up one electron to form the anion (negatively charged ion) Cl−. The salts of hydrochloric acid HCl contain chloride ions and are also called chlorides. An example is table salt, which is sodium chloride with the chemical formul... | <urn:uuid:4e76b8fd-c479-45d7-8ee7-faf61495aecb> | 4.59375 | http://www.all-science-fair-projects.com/science_fair_projects_encyclopedia/Chloride |
Brain Matures a Few Years Late in ADHD
but Follows Normal Pattern
A 2007 press release from the National Institute of Mental Health discusses brain development in ADHD youths. In some cases, brain development is delayed as much as three years. The full release and related video are available on the NIMH site: Brain Mat... | <urn:uuid:9b0b7a97-4882-4e06-adc0-44f4bbdc3349> | 3.390625 | http://www.cnld.org/autistic_spectrum_disorders.php |
1854-89 THREE DOLLARS INDIAN HEAD
In 1853 the United States negotiated the "Gadsden Purchase"settlement of a boundary dispute with Mexico that resulted in the U.S. acquiring what would become the southern portions of Arizona and New Mexico for ten million dollars. The following year Commodore Matthew Perry embarked upo... | <urn:uuid:ce5e0d75-e5f8-4ce2-8b94-86d9527d0dd4> | 3.671875 | http://www.coinsite.com/CoinSite-PF/PParticles/$3goldix.asp |
Rainy Day Painting
Create your very own creepy, haunted castle sitting in a turbulent field of flowing grass, eerily surrounded by dark, ominous clouds.
Fireworks are such an exciting part of part of summer festivities, but it's sad when the show is over. Keep them alive all year long with watercolor fireworks.
Show yo... | <urn:uuid:b9953fa3-a9b1-49a2-8a31-a2bff8d508c2> | 3.453125 | http://www.education.com/collection/zapkode/rainy-day-painting/ |
the energy [r]evolution
The climate change imperative demands nothing short of an Energy [R]evolution. The expert consensus is that this fundamental shift must begin immediately and be well underway within the next ten years in order to avert the worst impacts. What is needed is a complete transformation of the way we ... | <urn:uuid:b6cc700a-55c3-47a6-baaf-dbe7c04a4b04> | 3.3125 | http://www.energyblueprint.info/1332.0.html?L=0 |
Gay and Lesbian Issues
The adolescent years are full of challenges, many related to sex and sexual identity. These issues can be especially difficult for teens who are (or think they may be) homosexual. Homosexual teens deserve the same understanding and respect as heterosexual teens, and it is important for everyone t... | <urn:uuid:83d99630-30d5-4811-bdcf-250bf5d3fac5> | 3.59375 | http://www.intelihealth.com/IH/ihtIH/WSIHW000/34970/34997/362814.html?d=dmtChildGuide |
Ulva spp. on freshwater-influenced or unstable upper eulittoral rock
Ecological and functional relationships
The community predominantly consists of algae which cover the rock surface and creates a patchy canopy. In doing so, the algae provides an amenable habitat in an otherwise hostile environment, exploitable on a t... | <urn:uuid:13da434f-f140-49e3-8fdb-67019653693a> | 3.625 | http://www.marlin.ac.uk/habitatecology.php?habitatid=104&code=2004&code=2004 |
History of the Indians of the United States
by Angie Debo
The political, social, and military conflicts and foul-ups between the Indians and whites from the colonial era to the 1970s.
6 x 9 450 pages, index, maps, illustrated, paperbound
#300 Indians in the US $24.95
by Barry C. Kent
Culturally and linguistically, the ... | <urn:uuid:24918d75-915c-4e00-b5b9-a827162bb127> | 3.515625 | http://www.redrosestudio.com/Cat%2016%20Indians.html |
January 23, 2007:
The paper by researchers at Yale, the University of Winnipeg, Stony Brook University, and led by University of Florida paleontologist Jonathan Bloch reconstructs the base of the primate family tree by comparing skeletal and fossil specimens representing more than 85 modern and extinct species. The tea... | <urn:uuid:3fb03c5f-56af-4237-afa9-75336a1587b5> | 3.8125 | http://www.strangeark.com/blogarchive/2007_01_01_archive.html |
What is Rainwater Harvesting?
Rainwater harvesting is an ancient practice of catching and holding rain for later use. In a rainwater harvesting system, rain is gathered from a building rooftop or other source and is held in large containers for future use, such as watering gardens or washing cars. This practice reduces... | <urn:uuid:14a860e9-8430-426b-8c1a-80c7f022fb96> | 3.890625 | http://www.waterresourcesgroup.org/ |
Intellectual disability begins in childhood. People with intellectual disability have limits in their mental functioning seen in below-average intelligence (IQ) tests and in their ability to communicate, socialize, and take care of their everyday needs. The degree of disability can vary from person to person. It can be... | <urn:uuid:9966e685-a44f-44d0-bc28-77804eba9bae> | 3.328125 | http://blakemedicalcenter.com/your-health/?/96644/Intellectual-disability |
12. June 2012 10:55
Retinal hemorrhage occurs when the blood vessels in the retina get damaged or ruptured, leading to abnormal bleeding. The retina, which is composed of rods and cones is the region of the eye responsible for sensitivity to light, and vision. The retinal vein and artery, along with a dense network of ... | <urn:uuid:0a57e8d8-1439-48dd-8688-080cf98e78c5> | 3.59375 | http://killeeneyecarecenter.com/blog/post/Retinal-Hemorrhage-Symptoms-Diagnosis-And-Treatment.aspx |
Types of literature
PRIMARY SOURCES are publications that report the results of original research. They may be in the form of conference papers, monographic series, technical reports, theses and dissertations, or journal articles. Because they present information in its original form (that is, it has not been interpret... | <urn:uuid:36c1f567-48f3-46f4-b9c2-332bfdf4d2b6> | 3.375 | http://libguides.doane.edu/biosem |
The Solar and Heliospheric Observatory (SOHO) spacecraft is expected to discover its 1,000TH comet this summer.
The SOHO spacecraft is a joint effort between NASA and the European Space Agency. It has accounted for approximately one-half of all comet discoveries with computed orbits in the history of astronomy.
"Before... | <urn:uuid:78cbe1bd-1849-4138-b59a-5521e93122a3> | 4 | http://phys.org/news4969.html |
While any kind of dog can attack, some breeds are more prone to attacks than others. In fact, some dogs are more likely than others to kill humans.
The Centers of Disease Control estimates that more than 4.7 million people are bitten by dogs every year. Of those, 20 percent require medical attention.
In a 15-year study... | <urn:uuid:da55ad67-a163-461b-9317-72c3b8b457e2> | 3.53125 | http://www.abc2news.com/dpp/lifestyle/pets/which-dogs-are-most-likely-to-kill-humans%3F |
Glucose is a type of sugar. It comes from food, and is also created in the liver. Glucose travels through the body in the blood. It moves from the blood to cells with the help of a hormone called insulin. Once glucose is in those cells, it can be used for energy.
Diabetes is a condition that makes it difficult for the ... | <urn:uuid:da329173-6e70-42f5-aa09-933ea8352a2f> | 3.6875 | http://www.bidmc.org/YourHealth/ConditionsAZ/Congestiveheartfailure.aspx?ChunkID=11902 |
First ever direct measurement of the Earth’s rotation
Geodesists are pinpointing the orientation of the Earth’s axis using the world’s most stable ring laser
A group with researchers at the Technical University of Munich (TUM) and the Federal Agency for Cartography and Geodesy (BKG) are the first to plot changes in the... | <urn:uuid:d4281798-7278-4727-a736-be4cecc072f8> | 3.921875 | http://www.bkg.bund.de/nn_149566/sid_0F335650A0F77C3C47FE83A10BEB41EC/nsc_true/EN/News/01News/N2011/2011__12__27ring-laser.html |
the National Science Foundation
Available Languages: English, Spanish
This classroom-tested learning module gives a condensed, easily-understood view of the development of atomic theory from the late 19th through early 20th century. The key idea was the discovery that the atom is not an "indivisible" particle, but cons... | <urn:uuid:e5d364b6-d557-47e6-b078-62ea4b57c2d1> | 3.4375 | http://www.compadre.org/precollege/items/detail.cfm?ID=11307 |
Micro vs Macro
Micro and macro are prefixes that are used before words to make them small or big respectively. This is true with micro and macroeconomics, micro and macro evolution, microorganism, micro lens and macro lens, micro finance and macro finance, and so on. The list of words that makes use of these prefixes i... | <urn:uuid:837ed974-3d4d-4f45-9652-e4dbceee85e2> | 3.375 | http://www.differencebetween.com/difference-between-micro-and-vs-macro/ |
Leaf Characteristics (PK1) This set introduces simple vocabulary to describe the physical features of 40 North American tree, garden, and house plant leaves. First - The child sorts 9 leaf characteristics cards (3" x 4") onto 3 control cards (10-3/8” x 5¼”) that identify characteristics of Leaf Types, Leaf Veins, and L... | <urn:uuid:d8d399d3-71ef-4f88-8432-8aa6553e707a> | 3.96875 | http://www.in-printforchildren.com/3201/4285.html |
: the study of the conformation of the skull based on the belief that it is indicative of mental faculties and character
Study of the shape of the skull as an indication of mental abilities and character traits. Franz Joseph Gall stated the principle that each of the innate mental faculties is based in a specific brain... | <urn:uuid:0946e91b-14ac-49fc-8c05-8dc7853d40e6> | 3.578125 | http://www.merriam-webster.com/dictionary/phrenology |
LESSON ONE: Transforming Everyday Objects
Marcel Duchamp: Bicycle Wheel, bicycle wheel on wooden stool, 1963 (Henley-on-Thames, Richard Hamilton Collection); © 2007 Artists Rights Society (ARS), New York/ADAGP, Paris, photo credit: Cameraphoto/Art Resource, NY
Man Ray: Rayograph, gelatin silver print, 29.4×23.2 cm, 192... | <urn:uuid:31fab53b-eb78-4e38-ae2c-77d787710125> | 3.859375 | http://www.oxfordartonline.com/public/page/lessons/Unit5Lesson1 |
The pleura are two thin, moist membranes around the lungs. The inner layer is attached to the lungs. The outer layer is attached to the ribs. Pleural effusion is the buildup of excess fluid in the space between the pleura. The fluid can prevent the lungs from fully opening. This can make it difficult to catch your brea... | <urn:uuid:b050fe6e-cde2-4f69-8178-49ddeb1ead6b> | 3.546875 | http://largomedical.com/your-health/?/2010812305/Pleural-Effusion |
Student Learning Outcomes
Students who complete the French Program will be able to:
- Communicate in a meaningful context in French.
- Analyze the nature of language through comparisons of the French language and their own.
- Demonstrate knowledge of and sensitivity to aspects of behavior, attitudes, and customs of Fra... | <urn:uuid:5af48c87-5ebf-40b0-9437-a79124e81436> | 3.53125 | http://sdmesa.edu/instruction/slo/programs.cfm?DeptID=28 |
MIT professor’s book digs into the eclectic, textually linked reading choices of people in medieval London.
CAMBRIDGE, Mass. -- Following the 1997 creation of the first laser to emit pulsed beams of atoms, MIT researchers report in the May 16 online version of Science that they have now made a continuous source of cohe... | <urn:uuid:00cd54cf-be16-4b4b-8800-7d5342159b7a> | 3.515625 | http://web.mit.edu/newsoffice/2002/atomsource.html |
We are banishing darkness from the night. Electric lights have been shining over cities and towns around the world for a century. But, increasingly, even rural areas glimmer through the night, with mixed – and largely unstudied – impacts on wildlife. Understanding these impacts is a crucial conservation challenge and b... | <urn:uuid:28ac1264-a7a3-4f42-b3f0-d3aa321f1dcf> | 3.71875 | http://www.batcon.org/index.php/media-and-info/bats-archives.html?task=viewArticle&magArticleID=1066 |
Asthma is a lifelong disease that causes wheezing, breathlessness, chest tightness, and coughing. It can limit a person's quality of life. While we don't know why asthma rates are rising, we do know that most people with asthma can control their symptoms and prevent asthma attacks by avoiding asthma triggers and correc... | <urn:uuid:444d36d1-9d94-4ee6-a229-05bf8f8ca759> | 3.375 | http://www.cdc.gov/VitalSigns/Asthma/index.html |
Human expansion and interference have detrimental effects as civilizations continue to encroach on previously undisturbed habitats. As a result, many species of animals and plants must struggle to survive.
Biodiversity reveals the important role each of these life forms plays in its ecosystem as well as the irreversibl... | <urn:uuid:8e291587-fa26-42d6-8a00-914854f8bb35> | 3.734375 | http://www.infobasepublishing.com/Bookdetail.aspx?ISBN=0816082421&eBooks=0 |
Let's Talk About: Cosmic collisions
Share with others:
It has been almost 100 years since Edwin Hubble measured the universe beyond the Milky Way Galaxy. Today, astronomers believe that as many as 100 billion other galaxies are sharing the cosmos. Most of these cosmic islands are classified by shape as either spiral or... | <urn:uuid:ebb1ace8-11cc-4b0f-87f2-0f8f23923491> | 3.9375 | http://www.post-gazette.com/stories/news/science/lets-talk-about-cosmic-collisions-664068/ |
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Lauren Boulden's Story
Using Think-Alouds to Get Inside Langston Hughes' Head
Over my past few years of teaching, there have been multiple occasions where I have been stumped on how to present a particular concept to my students. I've always been a... | <urn:uuid:d55ba202-34fa-4fe6-b6ae-698c282eb244> | 3.5625 | http://www.readwritethink.org/about/community-stories/using-think-alouds-inside-36.html |
King James II of England (who was also James VII of Scotland) inherited the throne in 1685 upon the death of his brother, Charles II. James II was unpopular because of his attempts to increase the power of the monarchy and restore the Catholic faith. Deposed in the "Glorious Revolution" of 1688-89, he fled to France. H... | <urn:uuid:be22c535-4fcb-4d7e-9507-2ace71b51909> | 3.53125 | http://www.royalty.nu/Europe/England/Stuart/JamesII.html |
Indian removal had been taking place in the United States since the 18th Century as more Americans made the move westward. In the early 19th Century, Andrew Jackson and the majority of white Americans like him, wanted the Indians to move west of the Mississippi, out of the way from white expansion. Popular thought was ... | <urn:uuid:323ada14-c2ab-40ad-a3b6-39c9c51e30e5> | 3.734375 | http://www.shvoong.com/humanities/history/6283-removal-indians-north-america/ |
There are many techniques available to help students get started with a
piece of writing. Getting started can be hard for all levels of writers.
Freewriting is one great technique to build fluency. That was
explored in an earlier lesson plan: http://www.thirteen.org/edonline/adulted/lessons/lesson18.html
This unit offe... | <urn:uuid:8337696e-d794-475f-9207-8e5f70d2fabe> | 4.28125 | http://www.thirteen.org/edonline/adulted/lessons/lesson19.html |
No one knows how the first organisms or even the first organic precursors formed on Earth, but one theory is that they didn't. Rather, they were imported from space. Scientists have been finding what looks like biological raw material in meteorites for years, but it's usually been shown to be ground contamination. This... | <urn:uuid:3687b7dc-36d0-40be-aad4-b342f2eaf02b> | 3.78125 | http://www.time.com/time/specials/packages/article/0,28804,2101344_2101210_2101220,00.html |
Search: Nuclear chemistry, Darmstadtium, Germany
In honour of scientist and astronomer Nicolaus Copernicus (1473-1543), the discovering team around Professor Sigurd Hofmann suggested the name copernicium with the element symbol Cp for the new element 112, discovered at the GSI Helmholtzzentrum für Schwerionenforschung ... | <urn:uuid:149ab25b-f1f4-4231-88ea-4e1968ed8a9d> | 3.671875 | http://www.webelements.com/nexus/search/results/taxonomy%3A20%2C538%2C198.212 |
As the years tick by with most of the planet doing little in the way of reducing carbon emissions, researchers are getting increasingly serious about the possibility of carbon sequestration. If it looks like we're going to be burning coal for decades, carbon sequestration offers us the best chance of limiting its impac... | <urn:uuid:0f4b5328-483d-437b-b4b6-8cf4bfa3968b> | 3.90625 | http://arstechnica.com/science/2010/01/pangea-era-rift-makes-east-coast-perfect-for-carbon-storage/ |
This section provides primary sources that document how Indian and European men and one English and one Indian woman have described the practice of sati, or the self-immolation of Hindu widows.
Although they are all critical of self-immolation, Francois Bernier, Fanny Parks, Lord William Bentinck, and Rev. England pres... | <urn:uuid:672e69ee-fd10-42dc-8e01-f4fde95914a0> | 3.734375 | http://chnm.gmu.edu/wwh/modules/lesson5/lesson5.php?menu=1&c=strategies&s=0 |
The white, mottled area in the right-center of this image from NASA’s Shuttle Radar Topography Mission (SRTM) is Madrid, the capital of Spain. Located on the Meseta Central, a vast plateau covering about 40 percent of the country, this city of 3 million is very near the exact geographic center of the Iberian Peninsula.... | <urn:uuid:e494080f-4b89-4fa9-91cc-95cd733c7b72> | 3.375 | http://earthobservatory.nasa.gov/IOTD/view.php?id=3045 |
A crocodile large enough to swallow humans once lived in East Africa, according to a May 2012 paper in the Journal of Vertebrate Paleontology.
Paper author Christopher Brochu is an associate professor of geoscience at University of Iowa. He said:
It’s the largest known true crocodile. It may have exceeded 27 feet in le... | <urn:uuid:f9cc2710-09a0-4ee3-8011-9574d0e64b2a> | 3.4375 | http://earthsky.org/earth/biggest-crocodile-that-ever-lived/comment-page-1 |
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