USGS: Volcano Hazards Program - Yellowstone FAQs: Questions About Supervolcanoes
QUESTION: What is the chance of another catastrophic volcanic eruption at Yellowstone? ANSWER: Although it is possible, scientists are not convinced that there will ever be another catastrophic eruption at Yellowstone. Over the past 640,000 years since the last giant eruption at Yellowstone, approximately 80 relatively nonexplosive eruptions have occurred and produced primarily lava flows
And, because the only health issue for the whales is their social addiction to each other, the rescue teams are freed from any moral responsibility to worry about any medical conditions they might cause the whales to be ripped apart by vicious sharks. As it now stands, NOAA Fisheries scientists can and do ignore barosinusitis in preparing environmental impact statements for the US Navy and the oil industry
Professional Development Standards The guide for teachers provides opportunities and appropriate resource material for teachers to learn about an Earth science topic that is not likely to have been included in their previous educational experiences (A, C) and includes suggestions for effective teaching strategies (B). NSES Standard How standard is addressed by Seismic Waves and the Slinky demonstrations, lessons and activities* Science Teaching Standards Many of the activities are inquiry-based (A, B) and provide opportunities for ongoing assessment (C)
Geologists believe that, if spreading continues, the three plates that meet at the edge of the present-day African continent will separate completely, allowing the Indian Ocean to flood the area and making the easternmost corner of Africa (the Horn of Africa) a large island. Picture two giant conveyor belts, facing each other but slowly moving in opposite directions as they transport newly formed oceanic crust away from the ridge crest
Volcanic Hazards
It is important to know what type of an eruption a volcano is most likely to produce so that the types of hazards produced by such an eruption can be identified. Volcanic Earthquakes Directed Blast Tephra Volcanic Gases Lava Flows Debris Avalanches, Landslides, and Tsunamis Pyroclastic Surge Pyroclastic Flows Lahars Hazards Prevention In recent years, with the eruptions of Mount St
Forces of Nature -- National Geographic
Sustainability at National Geographic The National Geographic Society aims to be an international leader for global conservation and environmental sustainability
As the shock wave surged east between increasingly confined shorelines, the waters piles higher and higher until at last they became a foaming white mountain eight hundred feet tall. are obviously controversial, but they do answer a question that has been plaguing short age creationists for years on how to relate to the difference between geological time and historical time
Fresh lava glows red hot to white hot as it flows.Why does lava take a long time to cool down?Lava cools slowly because lava is a poor conductor of heat. Mount Fuji is now a popular tourist location with a large number of climbers actively scaling the mountain top.What is a tsunami? A tsunami is a large ocean wave usually caused by an underwater earthquake or a volcanic explosion
Do volcanoes emit more CO2 than humans?
(PS I've really gotten away from things I really know about here, but I suspect both heat and pressure combine to make the lower crust less brittle than the upper crust. On the other hand, I think any ash cloud hanging over most surfaces except snow and ice would increase the albedo and have a cooling effect, and then there is also the albedo effect of aerosols via their effects on clouds - these effects being more short lived
The Science of Earthquakes
If you draw a circle on a map around three different seismographs where the radius of each is the distance from that station to the earthquake, the intersection of those three circles is the epicenter! Can scientists predict earthquakes? No, and it is unlikely they will ever be able to predict them. When the force of the moving blocks finally overcomes the friction of the jagged edges of the fault and it unsticks, all that stored up energy is released
Our Ever Changing Earth (Grades K-5) This lesson, originally written for grade 1, is broken into two parts: an introduction to plate tectonics and a study of weathering and erosion. To integrate literacy skills into this lesson, try the following: Questioning: A Comprehension Strategy for Small-Group Guided Reading (Grades 3-5) In this lesson, the teacher explains the difference between thin (factual) and thick (inferential) questions, and then models how to compose question webs by thinking aloud while reading
Thick ash deposits would bury vast areas of the United States, and injection of huge volumes of volcanic gases into the atmosphere could drastically affect global climate. In the 1880s and early 1890s, a series of powerful hydrothermal explosions and geyser eruptions occurred at Excelsior Geyser in the Midway Geyser Basin
Where is God When Bad Things Happen? Why Natural Evil Must Exist
promised before the beginning of time (Titus 1:2)) To the only God our Savior, through Jesus Christ our Lord, be glory, majesty, dominion and authority, before all time and now and forever. We have already discussed the problems involved with stopping earthquakes and have determined that stopping them would result in a greater evil (lack of continental land masses and excessive solar radiation on the surface of the earth)
MORE What work does the USGS do related to Asian carp? In areas where Asian carp are abundant, they have interfered with commercial and recreational fishing, caused reductions in zooplankton (animal plankton, an important food for many aquatic species), and harmed native fish communities
Something that is unique about subduction plate boundaries (relative to convergent and transform- or sliding- plate boundaries) is that there can be very deep earthquakes. While the gigantic 8.9 magnitude earthquake is impressive even for Japan, this is a part of the planet where geologists expect large and frequent earthquakes
Earthquakes happen when energy is released as these plates slip past one another.Despite appearances, the ground beneath our feet is constantly on the move. Know How Now Did you know that you could make 100,000 slices of toast with the energy from a bolt of lightning? Find out the physics behind this and more amazing facts here
Something that is unique about subduction plate boundaries (relative to convergent and transform- or sliding- plate boundaries) is that there can be very deep earthquakes. While the gigantic 8.9 magnitude earthquake is impressive even for Japan, this is a part of the planet where geologists expect large and frequent earthquakes
Scientists have developed a theory that explains how these giant plates move, thereby creating, destroying, and re-forming continents and oceans over long periods of time. When plates move apart, they produce new ocean floor as magma from the mantle rises up through volcanoes and deposits new rock along the plate boundaries
These plates are continually moving at rates of a few centimetres per year (about as fast as your fingernails grow), driven by forces deep within the Earth. At the boundaries between the plates, where they are moving together, apart or past each other, tremendous stresses build up, and are where most earthquakes occur
Why Do Earthquakes Happen?
This fact has been exploited as a means to enforce the global nuclear test ban, because no nuclear warhead can be detonated on earth without producing such seismic waves
That is what is happening along the San Andreas fault in California, where the Pacific plate (moving north) rubs against the American plate (moving south). The Tohoku quake was approx 12times bigger than the Nepalese quake (9.0 richter vs 7.8- every 0.1 increase is a doubling of the amount of energy released) The huge forces released (the 4th biggest since quakes have been recorded scientifically) indicate a prolonged period of system being "stuck" in layman's terms
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