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Science Resources. Internet Safety. Teaching Resources. Internet Safety. Grow. Physical Science. Maths, Key Stage 3. Exploring Circle Geometry Properties A superb resource on circles with two sections 'Explore It' and 'Use It' which cover the facts about circle geometry, multiple choice questions with guidance if you go wrong, investigations of circle properties with interactives and game to play. Exploring the Diameter and Circumference of Circles A multimedia video interactive which shows how circles are found around us and the relationship between circumference and diameter. There is an interactive activity where students can explore the value of pi and a printable worksheet. Area and Perimeter An interactive lesson with audio on area and perimeter aimed at 11 - 12 year olds.

Useful activity sheet with answers in the parents' section. Axial Symmetry A simple demonstration of what axial symmetry is. Symmetry A good tutorial with audio to help pupils learn the names of different polygons and how to draw lines of symmetry on some of them. What's my Angle A great way to learn how to use a protractor. Geoboard. QR Code Generator - create QR Codes online [business card, t-shirt, mug, 2D barcode, generate QR-Code] - goQR.me. War of 1812 Interests. Lesson plans for teachers. Common Core Implementation Kit enables the creation of a Common Core State Standards aligned lesson plan with a few easy clicks. Common Core operates from within Word 2013 and provides daily learning targets for Common Core State Standards, along with instructional notes, student friendly “I Can” statements, vocabulary lists, differentiation ideas, activity ideas, assessment ideas, common student misconceptions, and links to open educational resources aligned to the standards.

Save time planning lessons and locating resources for your students The Common Core Implementation Kit is a free tool that makes it easy for teachers to create Language Arts and Math lesson plans aligned to the Common Core State Standards all from within Microsoft Word 2013. Common Core consists of a series of course-specific Microsoft Word templates that access Common Core information through a Microsoft Office Task Pane that is displayed next to the lesson plan document. System requirements. Sites for State Research: Molly Schroeder. Elementary. Assessment. LessonPlanZ.com - Lesson Plans & Lesson Plan Resources for Teaching Math, Science, Social Studies, Language Arts, Reading, Writing, Thematic Units, Themes, Classroom Activities - preschool, kindergarten, elementary, middle school, high school. Interactive activity finder. Promethean. SMART Board.

Factors affecting heat transfer. States of Matter. States of Matter. States of Matter animation. Over 70 percent of Americans: climate change worsening extreme weather. Wind turbine in Minnesota, U.S. Photo by: Tiffany Roufs. According to a new poll, 74 percent of Americans agree that climate change is impacting weather in the U.S., including 73 percent who agreed, strongly or somewhat, that climate change had exacerbated record high temperatures over the summer. The findings mean that a large majority of Americans agree with climatologists who in recent years have found increasingly strong evidence that climate change has both increased and worsened extreme weather events.

In the poll the majority of Americans say climate change likely worsened a number of recent extreme weather events, including 71 percent for the current drought and last year's unusually mild winter; 70 percent for this year's heatwave-rocked spring; and 64 percent for the derecho, an especially fierce and long-lasting windstorm, that hit the northeast in June. Related articles Nary a mention of climate change during U.S. presidential debate July 2012: hottest month in U.S. history.

Over 70 percent of Americans: climate change worsening extreme weather. Eureka! Episode 28 - Heat as Energy‬‏ Eureka! Episode 27 - Convection‬‏ Eureka! Episode 24 - Conduction‬‏ Eureka! Episode 10 - Potential Energy‬‏ Eureka! Episode 9 - Kinetic Energy‬‏ Eureka! Episode 8 - Work‬‏ Eureka! Episode 7 - Weight vs. Mass‬‏ Eureka! Episode 6 - Gravity‬‏ Eureka! Episode 5 - Acceleration Part II‬‏ Eureka! Episode 4 - Acceleration Part I‬‏ Eureka! Episode 3 - Speed‬‏

Eureka! Episode 2 - Mass‬‏ Eureka! Episode 1 - Inertia‬‏ Academic. Experiments. Changing Earth. Rivers - Physical Geography - Running Water: Erosion & Deposits. Rivers - The Grand Canyon: How It Formed. Planet Earth: Deserts: Sahara Sandstorm. Mr. Nolde's Sixth Grade Earth Science Page. New Page 1. Videos Soil Erosion by Wind and its Control Produced by USDA-ARS-EWERU for NRCS, 2003. 35. min. /Color. Also available in VHS & DVD and with closed captioning. A three-part educational video, which describe the physical basis for wind erosion processes and control systems. Soil Erosion by Wind and Its Control Part I: The Problem of Wind Erosion Part II: Processes of Wind Erosion Part III: Control of Wind Erosion. Mount St. Helens Disintegrates in Enormous Landslide. Two years on at Chaitén « The Volcanism Blog. Posted by admin in Chaitén, Chile, eruptions, volcanoes. Tags: Chaitén, Chile, volcanic eruptions trackback View of Chaitén caldera and lava dome before the May 2008 eruption (© Eric Manríquez).

The eruption of Chaitén volcano in southern Chile began two years ago today, on 2 May 2008. Since that date eruptive activity at the volcano has continued uninterrupted: the intensity has varied, but the activity has never ceased. View from May 2009 of the Chaitén dome complex (courtesy Mr Javier Romero, Vialidad MOP, Puerto Montt). During the coming week, to mark the second anniversary of Chaitén’s awakening, there’ll be a series of posts here at the Volcanism Blog looking at various aspects – volcanological, social, economic and environmental – of this remarkable and endlessly fascinating eruption.

Sequence of images of the Chaitén lava dome during March 2010 (SERNAGEOMIN). UPDATE. For all our Chaitén coverage: Chaitén « The Volcanism Blog. Mount St. Helens Erupts — History.com Video. Mt. St. Helens Eruption May 18, 1980 720p HD. Niagara Falls (Horseshoe Falls, American Falls, Bridal Veil) in High Definition. "Maid of the Mist" - Niagara Falls. Hydroelectricity | Clean Energy. Electricity from Hydropower Hydropower is considered a renewable energy resource because it uses the Earth's water cycle to generate electricity. Water evaporates from the Earth's surface, forms clouds, precipitates back to earth, and flows toward the ocean.

The movement of water as it flows downstream creates kinetic energy that can be converted into electricity. A hydroelectric power plant converts this energy into electricity by forcing water, often held at a dam, through a hydraulic turbine that is connected to a generator. The water exits the turbine and is returned to a stream or riverbed below the dam. Hydropower is mostly dependent upon precipitation and elevation changes; high precipitation levels and large elevation changes are necessary to generate significant quantities of electricity.

Environmental Impacts The purpose of the following section is to give consumers a better idea of the specific ecological impacts associated with hydropower. Air Emissions Water Resource Use Reserves. National Geographic Freshwater 101: Rivers. Rivers and their tributaries are the veins of the planet, pumping freshwater to wetlands and lakes and out to sea. They flush nutrients through aquatic ecosystems, keeping thousands of species alive, and help sustain fisheries worth billions of dollars. Rivers are also the lifeblood of human civilizations. They supply water to cities, farms, and factories. Rivers carve shipping routes around the globe, and provide us with food, recreation, and energy. But rivers are also often the endpoint for much of our industrial and urban pollution and runoff. Over the course of human history, waterways have been manipulated for irrigation, urban development, navigation, and energy.

The Colorado River provides an excellent example of what happens when demand for river water—for cities, industry, energy production, and agriculture—threatens to outpace supply. River Facts. Spectacular Time Lapse Dam "Removal" Video. Colorado River Map. Balancing Limited Supply With Increasing Demand The Colorado River Basin is a critical component of North American water supply, providing H2O to 30 million people and thousands of acres of farmland.

When Colorado River withdrawals were first allocated among the river basin’s seven states, in 1922, the river held 17.5 million acre-feet (5.7 trillion gallons) of water. However, new science has shown that 1922 was part of an especially wet period. The river now averages about 14.7 million acre-feet per year and is allocated among seven states and Mexico. Why We Remove Dams. Over the past 100 years, the United States has led the world in dam building – blocking and and harnessing rivers for a variety of purposes, including hydropower, irrigation, flood control, and water storage. The US Army Corps of Engineers has catalogued at least 80,000 dams greater than 6 feet along the waterways of the United States – and at least tens of thousands of smaller dams pepper our rivers and streams. Secretary of the Interior Bruce Babbitt recently observed that, “on average, we have constructed one dam every day since the signing of the Declaration of Independence.”

While dams can benefit society, they also cause considerable harm to rivers. Dams have depleted fisheries, degraded river ecosystems, and diminished recreational opportunities on nearly all of the nation’s rivers. How Do Dams Damage Rivers? 1. By diverting water for power, dams remove water needed for healthy in-stream ecosystems. 2. 3. 4. By slowing water flow, most dams increase water temperatures. 5. 6. 7. 8. What’s So Bad About Dams, Anyway? In our line of work removing old dams to restore rivers, one of the most common questions people ask is “what’s so bad about dams, anyway?” It’s a great question and could be a short or long answer, depending on how detailed you want to get.

I’ll attempt to summarize the key issues here. 1. Dams block movement of fish and other species. What’s so important about this? Reproduction, for one. Some fish migrate from oceans to rivers (and the other way around) to spawn – salmon are the best-known example of this, but there are many others that might surprise you. 2. 3. 4. 5. Mississippi River Ride | National Geographic Education Video. Hoover Dam Directions. Views from a helicopter of Hoover Dam. Hoover Dam, once known as Boulder Dam, is a concrete dam in the Black Canyon of the Colorado River, on the border between Arizona and Nevada. It was built between 1931 and 1936 during the Great Depression. View of Hoover Dam with Lake Mead behind it. Hoover Dam is in Black Canyon on the Colorado River.

Hoover Dam is 30 miles from Las Vegas. Hoover Dam has no address. When driving from Las Vegas take I-515 South towards Boulder City. Shortly before you reach Boulder City, I-515 ends and Route 93 continues as a two lane highway to Hoover Dam. When driving to Hoover Dam from Las Vegas, stop at the parking garage on the left before you get to the dam. Science Online Earth's Features. Sahara Sand Storm. SAND BLASTING. Weathering and Erosion Photos -- National Geographic. Ecology. Newly Discovered Legless Amphibians Are Horrifying | Caecilian Family Discovered in India | Amphibians & Vertebrates.

Newly discovered legless amphibians live out their lives in underground burrows, tending their slimy pink young, which emerge from their eggs as miniature adults. If they sound like something out of a monster movie, they look it too: These creatures, part of a group of animals called caecilians, could pass for enormous earthworms. But they're actually vertebrates with backbones, more like salamanders or frogs. The discovery of new vertebrates is rare, especially outside of tropical rain forests, but the new caecilians come mostly from human-inhabited areas in northeastern India. They've escaped notice for so long because these burrowers spend their lives underground, out of sight of human eyes. To discover the new family, researchers led by the University of Delhi's S.D.

Biju and his colleagues, who report their findings Tuesday (Feb. 21) in the journal Proceedings of the Royal Society B, dubbed the new family Chikilidae. Newly Discovered Legless Amphibians Are Horrifying | Caecilian Family Discovered in India | Amphibians & Vertebrates. First plants caused ice ages, new research reveals. New research reveals how the arrival of the first plants 470 million years ago triggered a series of ice ages. Led by the Universities of Exeter and Oxford, the study is published in Nature Geoscience. The team set out to identify the effects that the first land plants had on the climate during the Ordovician Period, which ended 444 million years ago. During this period the climate gradually cooled, leading to a series of 'ice ages'.

This global cooling was caused by a dramatic reduction in atmospheric carbon, which this research now suggests was triggered by the arrival of plants. Among the first plants to grow on land were the ancestors of mosses that grow today. The research suggests that the first plants caused the weathering of calcium and magnesium ions from silicate rocks, such as granite, in a process that removed carbon dioxide from the atmosphere, forming new carbonate rocks in the ocean. The team used the modern moss, Physcomitrella patens for their study. Scientists Want to Bring Some Animals Back from Extinction. On Friday at a National Geographic-sponsored TEDx conference, scientists met in Washington, D.C. to discuss which animals we should bring back from extinction.

They also discussed the how, why, and ethics of doing so. They called it " de-extinction . " There are a few guidelines for which ancient species are considered, and sadly, dinosaurs are so long dead they aren't in the picture. Their DNA has long ago degraded, so researchers are fairly sure that Jurassic Park will never happen. They chose the animals using the following criteria: Are the species desirable — do they hold an important ecological function or are they beloved by humans?

This still leaves plenty of other animals on the table. But, if you were the zoo that had that one Woolly mammoth or saber-toothed cat, these costs just might be worth it. Here are 10 animals they are hoping to one day resurrect. 1. Wikimedia/DFoidl 2. Public domain 3. Original photo by Arthur A. 5. Wikipedia user Dantheman9758 6. 7. 8. Charles R. 9. 10. Science Teacher Network Group News. Virtual Microscope. How to Make an Ecosystem in a Bottle. Free Visual QR Code Generator | Custom QR Code Design | Visualead.