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Introduction to Earthquakes

Introduction to Earthquakes
Related:  Earth and Tectonic Plates

Plate Boundaries Kung Fu The Worlds Tectonic Plates Wegener's Puzzling Evidence Exercise (6th Grade) Although Alfred Wegener was not the first to suggest that continents have moved about the Earth, his presentation of carefully compiled evidence for continental drift inspired decades of scientific debate. Wegener's evidence, in concert with compelling evidence provided by post World War II technology, eventually led to universal acceptance of the theory of Plate Tectonics in the scientific community. The following files are needed for this exercise and can be downloaded in pdf format (Teacher Overview, (For Teachers) Wegener's Key to Continental Positions for grade 6, Student Puzzle Pieces, Key to Wegener's Evidence sheet, and Student Map of the World Today). If students need additional hints beyond those provided below, there is a Puzzle Outline Hint to be used as a base for the puzzle. Objectives Students will observe and analyze scientific evidence used by Wegener. The Student Puzzle Pieces and Legend To start this activity the teacher will present background information on Wegener.

Destructive plate boundary Early development of the atmosphere Early development of the atmosphere Added by Lawrie Ryan on Mar 19, 2008 An animation showing the early evolution of the Earth's Atmosphere. Click the arrow button to reveal the early stages in the formation of the atmosphere. This resource is from the unit History of the Atmosphere which is part of Absorb Chemistry. The full Absorb Physics course normally sells for £400 - but you can get it free for your school! All you need to do is ask your colleagues in the maths department to try our new Sumdog games...

KS3 Bitesize Geography - Plate tectonics : Revision, Page 3 Mr. Lee - Layers of the Earth rap Constructive Plate Boundary Most dangerous job in the world: Incredible footage of men working on top of volcanos | Weird This incredible footage shows men working on a super volcanic mountain range in East Java, Indonesia. The workers, many of whom aren't expected to live past 50, breathe highly noxious gases which come out of the Kawah Ijen Volcano without masks, carrying loads of up to 70kg on their backs from a quarry. Many work shirtless and have huge growths on their backs from the heavy loads. Photographer Brad Ambrose captured the pictures along with his pal Geoff Mackley, while trekking through Indonesia. The 38-year-old photographer said: "It would be one of the more dangerous jobs in the world – not just because of the fall risks, but because of the gases the miners work in. "The majority are working in there with no masks to filter out the deadly gases. "Even though we each used a gas filter set, at some stages we could still taste the gas." The photographers from New Zealand travelled from midnight to try and get pictures of the sulphur fires before sunrise.

conservative plate boundary Earth - Why ancient myths about volcanoes are often true Story has it that many hundreds of years ago, Tanovo, chief of the Fijian island Ono, was very partial to a late afternoon stroll. Each day he would walk along the beach, watch the sun go down and undoubtedly contemplate this paradise on Earth. The cultural memory was right, and our scientific surveys were wrong But one day Tanovo’s rival, chief of the volcano Nabukelevu, pushed his mountain up and blocked Tanovo’s view of the sunset. Enraged at this, and robbed of the pacifying effects of his daily meditation, Tanovo wove giant coconut-fibre baskets and began to remove earth from the mountain. When geologist Patrick Nunn first heard this myth, it made sense that it described the volcanic eruption of Nabukelevu, with the associated ash falls on other islands in the Kadavu group. Then, two years later, when diggers carved out a road near the base of the volcano, they uncovered pieces of ancient pottery buried underneath a metre-deep layer of volcanic ash. Legend has it “It might erupt.

Earth's Continental Plates - ZoomSchool All About Plate Tectonics:Earth's Plates and Continental Drift The Earth's rocky outer crust solidified billions of years ago, soon after the Earth formed. This crust is not a solid shell; it is broken up into huge, thick plates that drift atop the soft, underlying mantle. The plates are made of rock and drift all over the globe; they move both horizontally (sideways) and vertically (up and down). Over long periods of time, the plates also change in size as their margins are added to, crushed together, or pushed back into the Earth's mantle. These plates are from 50 to 250 miles (80 to 400 km) thick. The map of the Earth is always changing; not only are the underlying plates moving, but the plates change in size. Earth's Major Plates: PLATE TECTONICS The theory of plate tectonics (meaning "plate structure") was developed in the 1960's. The plates are moving at a speed that has been estimated at 1 to 10 cm per year.

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