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Virtual Volcano : Pompeii

How Landslides Work" See more pictures of natural disasters. When it comes to natural disasters, the tornadoes and tsunamis of the world tend to get all of the attention. Rarely do landslides seize as many headlines as the volcanoes and earthquakes that can cause them. But when the ground literally rips downhill, the effect is often more damaging than the trigger. Landslides are a form of mass movement, a term used to describe any sort of gravity-induced movement of sediment down a slope. ­There are many different kinds of mass movements categorized by the type of material involved, the way it is moved and how fast it moves­. Although the word landslide often is used (incorrectly) to encompass many types of mass movements, a landslide is actually something more specific. In this article you'll learn what happens if a landslide happens underwater, why deforestation and water don't mix and just how powerful (and hot!)

What causes tornadoes? Americans know tornadoes like no one else. The U.S. averages at least 10 times more twisters each year than any other country on Earth, and their intensity is infamous — the worst can be a mile wide, rotate at 300 mph and plow along at 70 mph. Yet despite being target practice for these atmospheric power drills, America's tornado mythos is still cloaked in mystery and misunderstanding. That's understandable, considering tornadoes' stealthy nature — sudden appearances, erratic behavior and brief lifespans make them elusive subjects to study — but science has nonetheless learned a lot in recent decades. Tornadoes can occur any time of year, but they wage all-out war on the U.S. during spring and summer. How tornadoes work Tornadoes produce the strongest winds on Earth, but they owe all their energy to the chaotic clouds that birth them. Before a thunderstorm forms, winds begin quickly changing speed and direction. Where and when tornadoes strike How to survive a tornado

Rock Cycles cycles Rock Cycles Even rocks have a cycle. Rocks are continually circulating in the mantle just below the crust of the earth. Once on the surface of the earth, rocks cool down. Sample some of the following activities to learn more about rocks and their cycles. Places To Go People To See Things To Do Teacher Resources Bibliography Places To Go The following are places to go (some real and some virtual) to find out about rocks and their cycles. Ayers RockVisit famous Ayers Rock in Australia. Devils Tower National MonumentVisit Devil's Tower in Wyoming. Easter IslandStroll along the beaches of Easter Island. The Formation of the HimalayasVisit the Himalayas. The Geology of the Grand CanyonErosion is part of the cycle of how rocks erode from wind, water, glaciers, and shifts in temperature. The Giant's CausewayTravel to the Giant’s Causeway in Antrim, Northern Ireland to study some unusual igneous rocks. Grand Canyon ExplorerVirtually visit the Grand Canyon. How Do Soils Form? People To See

The Linnean Society of London | Education Resources Welcome to our education page! We hope you enjoy exploring our activities and resources. The Linnean Society of London is the home of Carl Linnaeus in the UK. Teachers, parents and students can click on the other categories to view our targeted education resources, linked to the National Curriculum. IRIS Seismic Monitor - Recent Earthquakes The actual min mag shownon the map is about 4.2,to get a uniform distribution.

Seismic Waves" This content is not compatible on this device. Click the play button to start the earthquake. When P and S waves reach the earth's surface, they form L waves. The most intense L waves radiate out from the epicenter. When you toss a pebble into a pond, it creates radiating waves in the water. There are several types of seismic waves. Primary waves (or P waves) are the fastest moving waves, traveling at 1 to 5 miles per second (1.6 to 8 kilometers per second). Secondary waves (also called shear waves, or S waves) are another type of body wave. Unlike body waves, surface waves (also known as long waves, or simply L waves) move along the surface of the Earth. How do scientists calculate the origin of an earthquake by detecting these different waves?

When Exploding Whales Goes Horribly Wrong Yesterday we brought you the story of a blue whale that washed up on the shore of a small town in Canada. The people in the town don’t have the resources to deal with the carcass properly, but aren’t getting any help from the federal government. Dead whales become grossly inflated from gas buildup as they decompose, so the clock is ticking as the people of Trout River decide what to do. Luckily, they have a perfect example of what NOT to do thanks to the town of Florence, Oregon who were faced with a similar situation in 1970. Unfortunately, the amount of dynamite was not properly calculated and the result was quite messy. [Image hat tip NPR] Map of The World - Shaded Relief

125 Great Science Videos: From Astronomy to Physics & Psychology Astronomy & Space Travel A Brief, Wondrous Tour of Earth (From Outer Space) - Video - Recorded from August to October, 2011 at the International Space Station, this HD footage offers a brilliant tour of our planet and stunning views of the aurora borealis.A Universe from Nothing - Video - In 53 minutes, theoretical physicist Lawrence Krauss answers some big enchilada questions, including how the universe came from nothing.A Year of the Moon in 2.5 Minutes - Video - The Lunar Reconnaissance Orbiter has been orbiting the moon for over a year. The footage gets compressed into 2 slick minutes.A Day on Earth (as Seen From Space) - Video - Astronaut Don Pettit trained his camera on planet Earth, took a photo once every 15 seconds, and then created a brilliant time-lapse film.Atlantis's Final Landing at Kennedy Space Center - Video - After more than 30 years, the space shuttle era comes to a close. Video runs 30 minutes. Physics Biology & Chemistry Environment, Geology and & Ecology

El Proyecto Matriz - The Matrix Project Water on, in, and above the Earth - USGS Water Science for Schools The USGS Water Science School A Beta version of the new USGS website has been released for public comment.Use the "Feedback" button at bottom of every Beta page to tell us what you think. As the saying goes ... "water, water, everywhere." Well, how much water is there; where is this water; how does it move around? Use the diagram below to find out (select "Menu of all Earth's Water topics" to see a more complete list). Investigate the water cycle (in many languages!) wwf - Footprint calculator | The ecological footprint calculator is not mobile or tablet compatible. Read more about how you can change the way you live to reduce your footprint. | Australia's ecological footprint Australia has one of the world's largest ecological footprints per capita, requiring 6.25 global hectares per person. If the rest of the world lived like we do in Australia, we’d need the regenerative capacity of 3.6 Earths to sustain our demands on nature. We have been exceeding the Earth's ability to support our lifestyle. And we can. Would you like to measure your ecological footprint to see how the way you live is impacting the planet and what you can do to reduce it?