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Materials Science Research Rack Heats Up For Valuable Space Station Science
Have you ever wondered how we develop new materials or find out what properties we can change in existing materials to improve them? Scientists and researchers at NASA are doing just that through materials science research using the Materials S... | <urn:uuid:8bb4e031-180a-458d-b407-ee22d7c338e3> | {
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EVEN a material 10 billion times as strong as steel has a breaking point. It seems neutron stars may shatter under extreme forces, explaining puzzling X-ray flares.
Neutron stars are dense remnants of stars gone supernova, packing the mass of the sun into a sphere the size of a city. Their cores may be fluid, but their... | <urn:uuid:dde9296d-febe-4cf0-8ed1-a0f99cdc6029> | {
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The social studies curriculum builds a strong understanding of history, geography, civics, current events, economics, and world cultures. Students learn about United States and world history including eras, themes, and significant events that are central to understanding the experiences of other times and other nations... | <urn:uuid:bda18e9a-f00a-46f7-a107-0680c6780bcb> | {
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A tsunami is a series of waves most commonly caused by violent movement of the sea floor. In some ways, it resembles the ripples radiating outward from the spot where stone has been thrown into the water, but a tsunami can occur on an enormous scale. Tsunamis are generated by any large, impulsive displacement of the se... | <urn:uuid:87a817df-e201-474d-b964-dcde3f8d1a17> | {
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About a million years before her was "Ardi" (Ardipithecus ramidus), which had much more primitive feet, suggesting that although she might have been able to walk upright, she still was well adapted to life in the trees. So it came as quite a surprise last year when researchers described part of a fossil foot from 3.4 m... | <urn:uuid:0d50ba64-bfe3-4a54-9e60-58f482953425> | {
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At Bryce Canyon National Park, erosion has shaped colorful Claron limestones, sandstones, and mudstones into thousands of spires, fins, pinnacles, and mazes. Collectively called "hoodoos," these colorful and whimsical formations stand in horseshoe-shaped amphitheaters along the eastern edge of the Paunsaugunt Plateau i... | <urn:uuid:028b0164-b22d-4b70-ba8b-9069ef61d186> | {
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It's Pumpkin Time
- Grades: PreK–K, 1–2, 3–5
It’s October, fall is here, Halloween is near, all of which means — it’s Pumpkin time! This month we are diving into pumpkins hands first. Before my class could fully experience pumpkins, we started out by reading a lot of books. Last week I shared a few of my favorite fall ... | <urn:uuid:1d4d5707-dc94-4fad-9304-dd1ac04c087d> | {
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|Women’s Suffrage in the UK||Women Suffrage in the USA||Parliamentary Reform|
Elizabeth Cady Stanton
Elizabeth Cady, the daughter of Daniel Cady, a lawyer and politician, was born in Johnstown, New York, 12th November, 1815. She studied law under her father, who later became a New York Supreme Court judge. During this ... | <urn:uuid:823dd093-6bc7-4d5e-9984-07a892621db2> | {
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When he shot President Lincoln, John Wilkes Booth was 26 years old, and one of the nation’s most famous actors. (Charles DeForest Fredericks/National Portrait Gallery)
John Wilkes Booth, a Maryland native, spent the war performing in theatrical productions. But the conflict was never far from his mind. In a letter to h... | <urn:uuid:b48891ec-4670-49b3-85a7-ec1a2ad95bf5> | {
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Aug. 3, 1492: Columbus Sets Out to Discover … a Trade Route
1492: Christopher Columbus, sailing for the Spanish crown, weighs anchor for the New World.
From his flagship Santa Maria, Columbus commanded a squadron that included the caravels Niña and Pinta. The original purpose of the voyage was not to discover new lands... | <urn:uuid:788d0f3d-cc20-4c4c-9c6f-9e735b4c9835> | {
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Gender-Responsive Climate Change Adaptation and Egypt
Neither the impacts of climate change on people, nor the ways in which people respond to climate change are gender-neutral. Women usually bear the burden of climate changes because they are the bulk of the Egypt’s poor and have fewer resources for coping with global... | <urn:uuid:38b46b0d-fb1f-4aba-b858-1e77775e67e7> | {
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Tuesday, July 31, 2012
From Wikipedia: Werner Karl Heisenberg (5 December 1901 – 1 February 1976) was a German theoretical physicist and philosopher who discovered (1925) a way to formulate quantum mechanics in terms of matrices. For that discovery, he was awarded the Nobel Prize for Physics in 1932. In 1927 he publish... | <urn:uuid:a6e93bff-0d1d-4acc-af3b-1b00afddf67f> | {
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Economics Model Answers Two
Introductory: 1. In a free market, the price and quantity at which goods are sold are where __________ equals ___________.
supply equals demand
2. Suppose the price demand curve is P = $20 - Q, where P is price and Q is quantity. Also suppose the price supply curve is P = $4 + Q. At what pri... | <urn:uuid:c8d64087-cd17-402f-a502-305270c9d004> | {
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Current models of global climate change predict warmer temperatures will increase the rate that bacteria and other microbes decompose soil organic matter, a scenario that pumps even more heat-trapping carbon into the atmosphere. But a new study led by a University of Georgia researcher shows that while the rate of deco... | <urn:uuid:dbd336d1-5dba-4cad-aae7-758f35131d59> | {
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Science: Balls and Ramps
These resources explore basic concepts of science related to balls and ramps. Learn about the characteristics and properties of balls and ramps, relationship between the physical properties of balls and their motion, and some of the factors that affect the way balls behave. Includes lesson plan... | <urn:uuid:f91f7a48-0901-4a85-a050-4188ec805b64> | {
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Weather is what is happening in the atmosphere now, at any place on Earth’s surface. It includes the temperature and whether it is wet and windy, or dry and calm.
The Sun provides the energy that drives Earth’s weather. The Sun heats the air in various parts of Earth’s atmosphere by different amounts. Masses of warm an... | <urn:uuid:d9fd49f9-92d2-499a-b0f4-fd69dafafd9f> | {
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May 04 2010
Today we talked about hydrogen and how it can be used to power vehicles. Of the forty-four free response questions on previous A.P. exams, none have addressed hydrogen power, so Mr. Willard said this would be “good knowledge to have in our pockets.”
First we reviewed what we already knew about hydrogen. Hyd... | <urn:uuid:d2593b31-f83e-45c5-92d3-66550eb9883c> | {
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“A remote Indian village is responding to global warming-induced water shortages by creating large masses of ice, or “artificial glaciers,” to get through the dry spring months. (See a map of the region.)
Located on the western edge of the Tibetan plateau, the village of Skara in the Ladakh region of India is not a com... | <urn:uuid:5050ac83-4770-4e9c-9b44-38ba46d2466e> | {
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Avian flu, also known as “bird flu,” is caused by influenza viruses that occur naturally among wild birds. Normally, wild birds across the globe are carriers of a harmless form of these viruses, which don’t sicken them. But recently, a new strain of the virus, H5N1 (named for the proteins on the surface of the virus), ... | <urn:uuid:88ebe6e7-8490-4047-9655-e502312d6cb8> | {
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21 September 2011
Researchers used satellite tracking to monitor the movements of the whales to discover that in 2010 they travelled between the Atlantic and Pacific seas via the famously ice-bound passage. Bones found on beaches in the region suggest that the last time the whales occ... | <urn:uuid:51f13114-c865-4664-8bbe-81fef4087051> | {
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We are always being asked by teachers how they can work more creatively with pupils so here is a fine example:
Teacher in Role
Teacher in role is a great dramatic technique to use. It basically means the teacher adopts a suitable role and directs the drama from within. By doing this the teacher is more able advance the... | <urn:uuid:6746f006-2a68-43bc-b6f5-72b2848dbdf8> | {
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Lichen love space
Scientist have found the most complex organism to date that can survive direct exposure to space: lichen.
The European Space Agency (ESA), which sponsored the research, says the findings bolster the possibility that life was transferred between planets.
Researchers from Spain flew samples of lichen, w... | <urn:uuid:4d05952d-e1e3-4e24-b34a-454e5e481960> | {
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LEDs are commonly used in all kinds of applications. The tiny red and green indication lights found here and there on electronic equipment such as TVs and computers are LEDs. They are very efficient in converting an electric current directly into light, but their use was limited by technical constraints preventing the ... | <urn:uuid:5b328f78-51eb-4863-9128-c6b167353bad> | {
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I recently saw the movie "Amazing Grace," about the end of the slave trade in England. How does libertarianism respond to the American Civil War and the Civil rights movement? In both of them, government action was used to enhance freedom.
Government action made slavery possible, and kept it possible -- and the governm... | <urn:uuid:bf597805-6f60-41ba-a409-3bdb3284d06d> | {
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Source: Garland Science/Taylor and Francis Books, Inc.
In this animation adapted from Garland Science Publishing, a detailed look at DNA reveals the structural features that make up the famed double-helix molecule. The animation shows how the ladder-shaped DNA is constructed from chemical building blocks, including pho... | <urn:uuid:bea57faf-a75a-4bbc-8b16-ac29ed5368b9> | {
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This is a picture of the Colorado River near Hoover Dam.
Click on image for full size
Rivers are very important to Earth because they are major forces that shape the landscape. Also, they provide transportation and water for drinking, washing and farming. Rivers can flow on land or underground in deserts and seas. Rive... | <urn:uuid:dfb97c03-d867-4ab1-a61f-575be13348ba> | {
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Learn something new every day More Info... by email
A predicate is part of a sentence or clause in English and is one of two primary components that serves to effectively complete the sentence. Sentences consist of two main components: subjects and predicates. Subjects are the primary “thing” in a sentence which the re... | <urn:uuid:b6182938-d2ed-4d47-a28c-9ae9952dbc8d> | {
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|Module 3: Interpreting Data|
2. Using data to support an argument
To test a theory or answer a question a study is designed, sampling is conducted and the data is collected. The process of descriptive statistics then involves presenting the data in tables and graphs. The data may seem to indicate a clear conclusion ab... | <urn:uuid:a6bea8fa-367c-49d6-8f25-41e8746417ff> | {
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An Efficient Solar Harvest
Solar power could be harvested more efficiently and transported over longer distances using tiny molecular circuits based on quantum mechanics, according to research inspired by new insights into natural photosynthesis. Incorporating the latest research into how plants, algae and some bacteri... | <urn:uuid:5650b21a-52be-4f3e-bbd4-894e5d1fd662> | {
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The study of motion is often called kinematics. We will begin our study with one dimensional kinematics. We will later expand to 2 and 3 dimensional kinematics after we have studied vectors.
We can give the position of an object in relation to a reference point. There are a number of variables we can use for position, ... | <urn:uuid:627b76b2-d80d-4591-b9b8-01ec5ccc1148> | {
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When a person has a heart attack, the heart repairs its damaged muscle by forming scar tissue. As a result, the heart never truly goes back to the way it was. But when a zebrafish has a heart injury, like having a large chunk of it chopped off, it grows a brand new piece to replace it.
Two independent reports published... | <urn:uuid:acee1327-d2e1-4a77-a138-be2a5ec46970> | {
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Some time in the past, before the ice age, most of western North America (and probably the whole world) was accurately mapped by a technologically advanced people. Who these people were and what technology they used is lost to us, but their maps remain as evidence that they did indeed accomplish the task. These ancient... | <urn:uuid:cf82d215-d0db-47f5-900c-89a2c31ef0f9> | {
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Transformations in the Coordinate Plane
Transformations in the coordinate plane are often represented by "coordinate rules" of the form (x, y) --> (x', y'). This means a point whose coordinates are (x, y) gets mapped to another point whose coordinates are (x', y').
When possible, simple formulas are given for x' and y'... | <urn:uuid:5a87378c-8f3a-440e-b812-447617fb0107> | {
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The Pasterze Glacier in western Austria has been receding since 1856. A combination of higher summer temperatures and lower winter snowfall is causing the retreat. Glaciers in nearby Switzerland receded more rapidly in 2003 than in any other year since annual measurements began in 1880. Despite the record heat in Europ... | <urn:uuid:3bd74f56-0527-4a18-8035-023e5cfe289a> | {
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A map of Marco Polo's route to and from China.
In the 13th century, a young Venetian named Marco Polo set out with his father and uncle on a great adventure. Following a series of trade routes, they traveled across the vast continent of Asia and became the first Europeans to visit the Chinese capital (modern Beijing). ... | <urn:uuid:5cdc52ff-7475-43f3-909f-a9718f5aec54> | {
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General Chemistry/Periodicity and Electron Configurations
Blocks of the Periodic Table
The Periodic Table does more than just list the elements. The word periodic means that in each row, or period, there is a pattern of characteristics in the elements. This is because the elements are listed in part by their electron ... | <urn:uuid:7ab562e2-c61b-4988-9c51-24c5b3cb1d20> | {
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Most Atlantic hurricanes start to take shape when thunderstorms along the west coast of Africa drift out over warm ocean waters that are at least 80 degrees Fahrenheit (27 degrees Celsius), where they encounter converging winds from around the equator.
Warm Air, Warm Water Make Conditions Right for Hurricanes
Hurricane... | <urn:uuid:2529c9ff-fac1-4c7a-81c9-51e424e73008> | {
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Slavery is a system under which people are treated as property and are forced to work. Slaves can be held against their will from the time of their capture, purchase or birth, and deprive... | <urn:uuid:b7dd2b6e-b58f-4547-8987-ab76dd59e87c> | {
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The Stormwater Ecological Enhancement Project (SEEP) began in 1995 as a take-home final exam for the course Ecosystems of Florida. The objective was to develop a management plan to enhance a stormwater retention basin located within the University of Florida Natural Area and Teaching Lab (NATL) for species diversity wh... | <urn:uuid:e885a217-6dff-4a4b-8bcb-7da91d0d9436> | {
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Allergy tests are used to find the substances that are causing an allergic reaction. An allergic reaction is an immune system response to a substance in the environment known as a trigger.
The healthcare professional may perform or order allergy tests on people with suspected allergies. Skin testing is usually not done... | <urn:uuid:da1f6fb4-3122-4de4-bd6d-8537b64092d3> | {
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Science Fair Project Encyclopedia
United States Marshals Service
The United States Marshals Service, part of the United States Department of Justice, is the United States' oldest federal law enforcement agency. Their mission is to protect the Federal courts and ensure the effective operation of the judicial system.
Sin... | <urn:uuid:ec903125-2b80-44d0-ac4d-6fdee6452653> | {
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Imagine seeing a penguin that’s five feet tall and has a very long, straight beak. Imagine a penguin so large it weighs twice as much as a the Emperor penguin, the largest species on Earth. That is, the largest species on Earth currently. If you were alive thirty-six million years ago you might have seen this giant pen... | <urn:uuid:7aba6d38-c624-463a-8a60-461037631c47> | {
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The Moravian church was founded in the 15th century, and is considered the first Protestant denomination, based on the philosophies of Jan Hus. By the 18th century, members of the church had been forced out of their homelands in Moravia and Bohemia (now part of the Czech Republic), and some had ended up in Herrnhut, Ge... | <urn:uuid:592127b3-4ed4-4811-a88f-6746e47e5e5a> | {
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Though the chemistry and industrial processes for coal gasification were developed early in the 20th century by European scientists, Chinese engineers have recently developed a number of technical advances. And more efficient processes means using less coal to produce more chemicals.
Near Xilinhot, in eastern Inner Mon... | <urn:uuid:668a723d-3f08-49e8-b6cd-07b0528b23e8> | {
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ILLINOIS STATE ARCHIVES
Abraham Lincoln in Illinois
A Selection of Documents from the Illinois State Archives
AN ACT TO PERMANENTLY LOCATE THE SEAT OF GOVERNMENT OF THE STATE OF ILLINOIS
February 7, 1837
Although a Senate bill, this piece of legislation was written by Abraham Lincoln and helped mark one of the major ac... | <urn:uuid:033f515c-fb93-4f99-969b-572fb1dbeea6> | {
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We recognise that early childhood is key to young children’s development. By the age of 3 years 80% of their brain is developed and so it is important that the foundations of mathematical thinking, language and skills are supported from birth. So, how can we as practitioners (and parents) help children become confident... | <urn:uuid:846c8561-96f6-4633-b2bf-446b5139429a> | {
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Sea ice is frozen seawater that floats on the ocean surface. Blanketing millions of square kilometers, sea ice forms and melts with the polar seasons, affecting both human activity and biological habitat. In the Arctic, some sea ice persists year after year, whereas almost all Southern Ocean or Antarctic sea ice is "se... | <urn:uuid:b5246854-fe77-4d8a-96ae-2c3df064ab3d> | {
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Electrical inductance sensors are non-contact devices that measure the inductance of an electrical component or system. They consist of a wire loop or coils and are relatively inexpensive. Inductance, the property of a circuit or circuit element to oppose a change in current flow, refers to the capacity of a conductor ... | <urn:uuid:bfe63548-3bc5-44fa-be93-553592b82423> | {
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Eastern Equine Encephalitis (EEE) is a rare, but serious disease caused by a virus that is carried by many species of swamp breeding mosquitoes. EEE virus (EEEV) occurs in the eastern half of the United States where it causes disease in humans, horses, and some bird species. Because of its high mortality rate, EEE is r... | <urn:uuid:16ebec01-bd98-437f-9062-d28d8f117101> | {
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From 4th century B.C to fourth century A.D a number early empires emerged in the Indian subcontinent. The earliest of these was the Mauryan Empire (c-324-187BC). Then there came satvahanas(c-324-250 A.D), kushanas (c.AD-50-320), and guptas (c.AD320-570) successively. Kushanas, originally a central Asian nomadic tribe, ... | <urn:uuid:f0988e44-e9e4-496a-8e5d-1da7a3966d7d> | {
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The First (and Last) Voyage to the Bottom of the Sea
A half-century ago, humanity arrived somewhere no one had ever gone before the deepest place on Earth.
Before the Apollo missions landed men on the moon, the U.S. Navy dove to the bottom of the sea the Challenger Deep in the Mariana Trench, some 35,797 feet (10,911 m... | <urn:uuid:1cfec21c-f34f-4a68-b967-6109f33f8afc> | {
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How the Greek Agora Changed the World
The 'School of Athens' fresco by Raphael, housed in the Vatican, is meant to represent the Greek agora and all the great minds that passed through it.
CREDIT: Heather Whipps
Each Monday, this column turns a page in history to explore the discoveries, events and people that continue... | <urn:uuid:4c67fd24-606f-4892-bdc8-f7099a440dbd> | {
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XII. This activity involves reading a scenario and discussing the correct way for a school bus driver to handle it. Options for using the scenarios can be found on page 5.
Follow these steps to conduct the activity.
- Review the instructions (XII.A-D) with the participants.
- Read the scenario slowly.
NOTE: There are 1... | <urn:uuid:de7f7c6e-412e-420f-a12d-c5fe444c5a57> | {
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In A.D. 79 Mount Vesuvius erupted, annihilating the cities of Pompeii and Herculaneum and killing thousands who did not evacuate in time. To avert a similar fate for present-day Naples, which lies six miles west of the still active Vesuvius, as well as for the cities near volatile Mount Etna in Sicily, a novel laser sy... | <urn:uuid:9309d171-e9f0-44a8-9de3-926e353cd4e3> | {
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If astronomy and outerspace interest you, then this activity set will fascinate you. You'll learn about the planets, stars, sun, moon, and even rockets - all through fun, hands-on experiments. Activities include using balloons and chemically powered rockets to study rocket propulsion, building a telescope and star map ... | <urn:uuid:ed799365-aaf6-44a3-9da2-8f42750a83fe> | {
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Learn something new every day More Info... by email
Information traveling across a computer network or another type of telecommunications network typically comes in packets. Packets are smaller, "bite-sized" pieces of a larger chunk of information. Although telecommunication technology is generally reliable and seamles... | <urn:uuid:387c10d5-b18a-4363-880e-d1cc5b368edd> | {
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Functions and Variables in Physical Science Experiments
Almost all true science experiments involve designing a series of trials where one variable is manipulated and another variable changes as a result of this manipulation. All other variables are held constant. A variable is said to be a function of another variable... | <urn:uuid:6f94b2b9-5fbc-4865-99d3-00a46b0e2828> | {
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Photo: Scott Zona
There is nothing more emblematic of spring and summer than flowers, but why do plants have flowers, and how did they evolve?
Botanists know that flowering plants, that is, plants that reproduce by producing seeds, evolved from non-flowering plants. According to evolutionary theory, nature would have s... | <urn:uuid:8a9b6621-ec71-444c-9309-238303e6477a> | {
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Sunlight is Earth’s most abundant energy source and is delivered everywhere free of charge. Yet direct use of solar energy—that is, harnessing light’s energy content immediately rather than indirectly in fossil fuels or wind power—makes only a small contribution to humanity’s energy supply. In 2008, about 0.1% of the t... | <urn:uuid:515d3239-de8f-40e7-adc5-50e951db0245> | {
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NASA has released a computer visualization project called "Perpetual Ocean" that presents a data-created time lapse of the Earth's ocean and sea surface currents over a two-year period.
The animation (see below) shows the globe slowly spinning as white swirls curl and move in the water around landmasses. It looks as if... | <urn:uuid:2f1474e5-3ee2-4c33-a54a-89813f786382> | {
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From Ohio History Central
Youngstown is the county seat of Mahoning County, Ohio.
Youngstown was founded by John Young in 1797 and is within the original Western Reserve of Connecticut. . Young had purchased an entire township from the Connecticut Land Company. He paid $16,085 for 15,560 acres of land. Within a short p... | <urn:uuid:f66e737f-7c83-496e-a189-120a85a52392> | {
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Women, Men and Suffrage
Nancy Kohlhoff, Valparaiso branch
(Ed Note: This is the sixth in a series of our exclusive publication of the manuscript written by Nancy after much research to fill in the gaps left by history books when dealing with women’s issues and their struggle to gain the vote.)
The movement for woman’s ... | <urn:uuid:9d02d5be-ec7d-4a26-bb66-8e87839dad10> | {
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Early galaxies full of cosmic dust
Space dust Astronomers have found dusty giant galaxies were already in existence 13 billion years ago, far earlier than previously thought.
The discovery reported in the Astrophysical Journal, means planets, which are made from coalescing dust particles, may also have already formed t... | <urn:uuid:d1f94744-89f3-420a-93aa-2d160fb48f7b> | {
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How is it diagnosed?
Alzheimer's disease is a form of dementia but is not necessarily caused by the same factors which cause other forms of dementia. However, despite a considerable amount of research, the actual cause of the disease remains unknown. There is no single test to determine whether someone has Alzheimer's ... | <urn:uuid:aa47fc0a-2be4-4573-b443-89220a70c8c8> | {
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Oxygen Fuels the Fires of Time
Scientists from The Field Museum in Chicago and Royal Holloway University of London, publishing their results this week in the journal Nature Geoscience, have shown that the amount of charcoal preserved in ancient peat bogs, now coal, gives a measure of how much oxygen there was in the pa... | <urn:uuid:b82f6dde-52a7-4c70-a146-bfaf0d7d1e3b> | {
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Birds buffer against virus
North American scientists studying West Nile virus have shown that more diverse bird populations can help to buffer people against infection. Since the virus first spread to North America it has reached epidemic proportions and claimed over 1,100 human lives. “This is an important example of ... | <urn:uuid:2401a087-3117-4980-85af-405fb14a6c3f> | {
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Supreme Court of JapanArticle Free Pass
Supreme Court of Japan, Japanese Saikō Saibansho, the highest court in Japan, a court of last resort with powers of judicial review and the responsibility for judicial administration and legal training. The court was created in 1947 during the U.S. occupation and is modelled to s... | <urn:uuid:5e06e85d-0315-47cc-b5c4-75a87bdb2c3e> | {
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Phytoplankton Under Ice
Beneath the Arctic ice—over 12 feet deep in some areas—lies a dark, cold and lifeless sea. Or so we thought.
“If someone had asked me before the expedition whether we would see under-ice blooms, I would have told them it was impossible,” says Arrigo. “This discovery was a complete surprise.”
The... | <urn:uuid:dda98bee-cbfe-4019-acc9-adace79b16b1> | {
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“Nothing struck deeper fear into the hearts of southerners, whether they held slaves or not, than the idea of a slave revolt.”
-- Historian Kenneth C. Davis
As a young man, Turner was sold to Thomas Moore. Upon Moore's death, Turner moved to the home of Joseph Travis, the new husband of Moore's widow. In each setting, ... | <urn:uuid:9b8882dc-bc05-4037-ace0-4e0a25e04ec2> | {
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Per Square Meter
Warm-up: Relationships in Ecosystems (10 minutes)
1. Begin this lesson by presenting the powerpoint, “Per Square Meter”.
2. After the presentation, ask students to think of animal relationships that correspond to each of the following types; Competition, Predation, Parasitism, and Mutualism
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Dinosaurs' active lifestyles suggest they were warm-blooded
H. Pontzer, V. Allen, J.R. Hutchinson/PLoS ONE
Whether dinosaurs were warm-blooded or cold-blooded has been a long-standing question in paleobiology. Now, new research on how two-legged dinosaurs walked and ran adds new evidence to the argument for warm-bloode... | <urn:uuid:a459a3fc-e2ca-4318-b2d2-359bd270ce2f> | {
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What are tachyons?
Tachyons are hypothetical particles that can only travel faster than the speed of light. As you probably know, objects with a real number for mass can never travel at the speed of light because of Einstein's theory of relativity. As a consequence of this theory, as a objects velocity increases its ma... | <urn:uuid:0a836341-2dd7-41a3-aa34-9109e795e68e> | {
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During the “automation scare” in the 1950s, people were intrigued yet suspicious about the power of computers. Would they someday send us into permanent unemployment? Could robots eventually take over the world?
The original goal of artificial intelligence was to build a person out of silicone. Although scientists made... | <urn:uuid:3020c353-cba8-4d3a-8b9b-a0bd6890cc69> | {
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Lesson plans for teaching organization
A collection of LEARN NC's lesson plans for teaching organization, the second of the five features of effective writing.
- Getting Paragraphing Down P.A.T.
- One way to remember when to indent and begin a new paragraph is when (P) the place changes, (A) the action changes, and (T)... | <urn:uuid:e3c8f011-1af4-424e-89b8-b37560a91447> | {
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The First World War was a singing war. Soldiers used songs to bond and to alleviate the stress and fears encountered at the front. They shared songs with each other at base camps, while marching, and in the front lines.
Types of Songs
There were popular songs of the war, like It's a Long, Long Way to Tipperary and Keep... | <urn:uuid:b4633695-62e7-46ef-aaf6-cb244661511d> | {
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Diego Ramón, son of the former Capt. Domingo Ramón, was appointed commanding officer in the aftermath of his father’s death. The success of the presidio depended in large part on the ability of the Spanish to establish a permanent military presence and create a community free of concern of continual attacks from local ... | <urn:uuid:fdc2debb-2ce0-4e80-a1ba-8c5f02c7db75> | {
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Sleep appears necessary for our nervous systems to work properly. Too little sleep leaves us drowsy and unable to concentrate the next day. It also leads to impaired memory and physical performance and reduced ability to carry out maths calculations. If sleep deprivation continues, hallucinations and mood swings may de... | <urn:uuid:dfde4108-7a55-440f-b708-986f1001601f> | {
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because accumulation exceeds ablation in a location. This
accumulation zone after it thickens to more than 30 m begins to
For a glacier to survive it must have a consistent and
persistent accumulation zone.
To diagnose a glacier
that is disappearing look for
1) Emergence of rock
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NutriWatch Home Page
The digestive tract -- also called the gastrointestinal tract or alimentary canal -- provides the pathway through which foods move through the body. During this process, foods are broken down into their component nutrients to be available for absorption.
Digestion actually begins in the mouth, as t... | <urn:uuid:717e9577-6598-49af-b42a-0a957fbc2dbb> | {
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Riparian and Wetland Management
Riparian areas are lands adjacent to creeks, streams, lakes, and rivers that support vegetation dependent upon free water in the soil. They are sometimes called "Ribbon-of-Green" because the vegetation on waterway banks forms a ribbon-like pattern when seen from the air. These areas, con... | <urn:uuid:6d09527b-2b18-4bc1-a4e3-5c64e490c504> | {
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From the time of Aristotle (384-322 BC) until the late 1500’s, gravity was believed to act differently on different objects.
- Drop a metal bar and a feather at the same time… which one hits the ground first?
- Obviously, common sense will tell you that the bar will hit first, while the feather slowly flutters to the g... | <urn:uuid:43ce7457-915e-4a8a-b78f-fca95b28656c> | {
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Clinial trials are medical research studies carried out under very strict guidelines and they are the building blocks of scientific progress. Researchers, physicians and other healthcare professionals rely on these studies for scientifically sound information on whether or not treatments are safe and effective.
To star... | <urn:uuid:b314f3a7-b68b-435a-a2ce-73e3323504d9> | {
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This weather balloon is full of helium gas. It is surrounded by Earth's atmosphere, which is mostly nitrogen and oxygen gasses. Helium is "lighter" (less dense) than nitrogen or oxygen, so the balloon will rise when the scientist lets go of it.
Click on image for full size
Image courtesy of the University Corporation f... | <urn:uuid:7bf1d597-0484-4471-8f33-5503ed8fe8ab> | {
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Introduction to Enzymes
The following has been excerpted from a very popular Worthington publication which was originally published in 1972 as the Manual of Clinical Enzyme Measurements. While some of the presentation may seem somewhat dated, the basic concepts are still helpful for researchers who must use enzymes but... | <urn:uuid:b1f146ea-468c-4e1e-980b-c4c17efb5378> | {
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Introduction to Enzymes
The following has been excerpted from a very popular Worthington publication which was originally published in 1972 as the Manual of Clinical Enzyme Measurements. While some of the presentation may seem somewhat dated, the basic concepts are still helpful for researchers who must use enzymes but... | <urn:uuid:950e10c6-23a1-4ac4-896e-da30b265af84> | {
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The flute is the instrument often considered to most closely mimic the human voice. Playing the flute is a personal experience and a unique extension of communication. Typically a young flutist gets their start on a student flute, which is typically a concert C flute. If their fingers are not quite large enough to reac... | <urn:uuid:42396456-f446-4501-8f4b-39530b768b13> | {
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Somewhere off the west coast of British Columbia wanders a whale—at least, his voice can be heard there. He appears to be alone.
Simply by eavesdropping, scientists have deduced a few details about this whale. He swims the cold waters of the North Pacific, probably in pursuit of food and love. In all likelihood, he is ... | <urn:uuid:7faf897b-0bec-42fa-b5bf-7c683d476c5f> | {
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In the cities and countryside section of Busy Teacher, there are 78 FREE worksheets to choose from
. They range from very simple word searches to detailed activities related to these topics. This activity
, for example, was created for Russian ESL learners but can serve as a model for you to create a similar activity m... | <urn:uuid:f96e5d95-4d79-4709-bf16-5ebd19b0893e> | {
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Free Blacks in the North and South, The Liberator, January 22, 1831
William Lloyd Garrison, a leading northern abolitionist, began publishing his anti-slavery newspaper, The Liberator, in January 1831. In this early article he compares the conditions of free blacks in the North and the South and the differences in the ... | <urn:uuid:d9d4e9b7-c7ff-452a-ab8b-cb2016ef438c> | {
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The Effect of Temperature on the Root Growth of Coniferous Seedlings
The purpose of this study was to determine the effect of temperature on the root growth of eight principal coniferous tree species prevalent in the western United States--Pseudotsuga menziesii, Pinus ponderosa, Pinus contorts, Picea engelmanni, Pinus ... | <urn:uuid:1307d1c5-34fa-413e-b031-59519b0264c0> | {
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The foods we eat contain nutrients that provide energy and other substances the body needs. Most of the nutrients in food fall into three major groups: proteins, fats, and carbohydrates.
The body uses fat as a fuel source, and fat is the major storage form of energy in the body. Fat also has many other important functi... | <urn:uuid:8049beb0-5d9b-4791-a5ab-0bfce1ae9f8d> | {
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A volcano is a hole where melted rock called magma or rock and ashes are
thrown up from inside the earth. Volcanoes are commonly known around the
world for bringing huge destruction as they erupt. When most people think
of volcanoes they think of hot boiling lava. Many people do not realize
that instead of only eruptin... | <urn:uuid:46a560ea-cfbf-40c8-a71f-e4bbe34f338b> | {
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But Keller and her colleagues say their research proves otherwise.
Keller has studied the Chicxulub site and other impact-crater sites around the world for the past decade. She believes that the asteroid impact behind Chicxulub coincided with a "time of massive volcanism, which led to greenhouse warming."
Keller says t... | <urn:uuid:4d9d2441-762a-4bf0-bbc6-64a734349fda> | {
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On November 25, 1952, three months after returning from England, Pauling finally made a serious stab at a structure for DNA.
The immediate spur was a Caltech biology seminar given by Robley Williams, a Berkeley professor who had done some amazing
work with an electron microscope. Through a complicated technique he was ... | <urn:uuid:bb706256-060f-4d0e-abdd-85b7887e5fba> | {
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Genome-sequencing data indicates that sponges were preceded by ctenophores, complex marine predators also called comb jellies.
The scientists presented their findings at the annual meeting for the Society for Integrative and Comparative Biology, in San Francisco, California.
Although they are gelatinous like jellyfish,... | <urn:uuid:0788be3c-ba50-4b6a-82f6-5035aa1dc9ce> | {
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by Anne E. Egger, Ph.D.
We all see changes in the landscape around us, but your view of how fast things change is probably determined by where you live. If you live near the coast, you see daily, monthly, and yearly changes in the shape of the coastline. Deep in the interior of continents, change is less evident – rive... | <urn:uuid:1d8cdccb-098e-46d2-97a3-50a9d15430c5> | {
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"file_path": "s3://commoncrawl/crawl-data/CC-MAIN-2013-20/segments/1368697380733/warc/CC-MAIN-20130516094300-00000-ip-10-60-113-184.ec2.internal.warc.gz",
"language": "en",
... |
RNA, ribonucleotide acid, is built up of a phosphate and nitrogenous base, a ribose sugar, and a phosphate. The bases used are adenine (A), cytosine (C), guanine (G) and uracil (U).
The chemical structure of RNA
There are four major groups of RNA: messenger RNA (mRNA), ribosomal RNA (rRNA), transfer RNA (tRNA) and sma... | <urn:uuid:f44e2793-140c-4216-818a-97021b96f284> | {
"dump": "CC-MAIN-2013-20",
"url": "http://wiki.biomine.skelleftea.se/wiki/index.php/RNA",
"date": "2013-05-19T09:53:59",
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"language": "en",
"language_sc... |
- Drawing from imagination
- Recognizing the unique characteristics which define an animal.
- Working with details and patterns.
realistic, pattern, unique characteristics
YOU WILL NEED
- 12 x 18-inch white drawing paper
- Non-toxic black permanent markers
- Watercolor markers
- Pencils (optional)
- Set out the pencils... | <urn:uuid:dc93d357-9959-477a-b003-ea3fccedcada> | {
"dump": "CC-MAIN-2013-20",
"url": "http://www.artforsmallhands.com/2010/07/drawing-zany-zoo_14.html",
"date": "2013-05-19T09:47:36",
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"language": "en",
... |
The initial discovery and recognition of the importance of Chocolate is often attributed to Hernan Cortez. Yet in 1502 Christopher Columbus, or Colon, on his fourth and final voyage to the Caribbean, reached the island of Guanaja off the coast of Honduras. History says that he was greeted by Aztecs who offered him sack... | <urn:uuid:26903cc2-6b3c-4362-93b3-d5b9d3b7b771> | {
"dump": "CC-MAIN-2013-20",
"url": "http://www.bellaonline.com/ArticlesP/art28303.asp",
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"language": "en",
"language_score... |
Mirror Learning Activity
Mirror for each group member
Play activities are not only a time for children to laugh and interact but also a time for children to learn.
Children of all ages and abilities should have the opportunity to learn and play with colours, texture and sounds.
This activity teaches the child about ref... | <urn:uuid:3c0ea3db-97b5-4cb6-a053-82dfd986dc29> | {
"dump": "CC-MAIN-2013-20",
"url": "http://www.craftbits.com/project/mirror-learning-activity",
"date": "2013-05-19T10:35:09",
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"language": "en",
"langua... |
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