Chapter One – Fire and Ice
... destructive volcanic eruptions greatly changed the height and shape of both Mount Rainier and Mount Saint Helens. Most of the volcanic eruptions occurred long before humans lived in Washington. An eruption long ago covered most of the Pacific Northwest in lava. The lava, however, did not come from a ...
... destructive volcanic eruptions greatly changed the height and shape of both Mount Rainier and Mount Saint Helens. Most of the volcanic eruptions occurred long before humans lived in Washington. An eruption long ago covered most of the Pacific Northwest in lava. The lava, however, did not come from a ...
End-Cretaceous extinction
... have been made a meteorite nearly 10 km across travelling at thousands of miles per hour. ...
... have been made a meteorite nearly 10 km across travelling at thousands of miles per hour. ...
Craters of the Moon - Idaho Museum of Natural History
... 6. How did the cinder cones form? Cinder cones were formed from expanding gases in the lava during eruptions that threw bubbly rocks hundreds of feet into the air. In some cases these cinders showered the ground and cooled to form cones at the vicinity of where they came out of the ground. ...
... 6. How did the cinder cones form? Cinder cones were formed from expanding gases in the lava during eruptions that threw bubbly rocks hundreds of feet into the air. In some cases these cinders showered the ground and cooled to form cones at the vicinity of where they came out of the ground. ...
Earth Shakes, Rattles, and Rolls
... •Sierra in California, Arizona is an example. • Created when a plate hits a fault and tips upside down, creating erosion and debris, which is at the base of the mountain. ...
... •Sierra in California, Arizona is an example. • Created when a plate hits a fault and tips upside down, creating erosion and debris, which is at the base of the mountain. ...
S05_4359_L15
... depression formed when magma is withdrawn or erupted from a shallow underground magma reservoir. The removal of large volumes of magma forming pumice-rich sheets may result in loss of structural support for the overlying rock, leading to development of a ring fracture, collapse of the ground and for ...
... depression formed when magma is withdrawn or erupted from a shallow underground magma reservoir. The removal of large volumes of magma forming pumice-rich sheets may result in loss of structural support for the overlying rock, leading to development of a ring fracture, collapse of the ground and for ...
How Do Earthquakes Tell Us About the Earth`s Interior?
... mantle – Act like a blowtorch on plate moving above – Mostly volcanism ...
... mantle – Act like a blowtorch on plate moving above – Mostly volcanism ...
SCIENCE 6 3rd rating part 2
... Choose the letter of the correct answer. 1. What two factors contribute to magma’s constant activity and turbulence? a. Extremely high temperature of the earth’s interior and pressure exerted by the planets. b. Extremely high pressure exerted by the plates and tremendous amount of magma. c. Tremendo ...
... Choose the letter of the correct answer. 1. What two factors contribute to magma’s constant activity and turbulence? a. Extremely high temperature of the earth’s interior and pressure exerted by the planets. b. Extremely high pressure exerted by the plates and tremendous amount of magma. c. Tremendo ...
Thehazardspresentedhavethegreatestimpactonthepoorestpeople
... With the L’Aquila earthquake the only primary effect it produced was ground shaking for 20 seconds whereas the Bandah Aceh earthquake was submarine and produced tsunami waves. There were several waves varying from 20m to 30m in height. This made the impact of the tsunami far more widespread as the w ...
... With the L’Aquila earthquake the only primary effect it produced was ground shaking for 20 seconds whereas the Bandah Aceh earthquake was submarine and produced tsunami waves. There were several waves varying from 20m to 30m in height. This made the impact of the tsunami far more widespread as the w ...
Leaving Certificate GEOGRAPHY - English Language Support
... Use the verbs in brackets to complete this text. Be careful about the following: The verbs will be used in active and passive forms. Some verbs will be in the present and some in the past tense. Check whether the verb refers to a singular or plural noun. The positive effects of volcanic action ...
... Use the verbs in brackets to complete this text. Be careful about the following: The verbs will be used in active and passive forms. Some verbs will be in the present and some in the past tense. Check whether the verb refers to a singular or plural noun. The positive effects of volcanic action ...
Document
... • When two oceanic plates collide, one runs over the other which causes it to sink into the mantle forming a subduction zone. • The subducting plate is bent downward to form a very deep depression in the ocean floor called a trench. • The worlds deepest parts of the ocean are found along trenches. – ...
... • When two oceanic plates collide, one runs over the other which causes it to sink into the mantle forming a subduction zone. • The subducting plate is bent downward to form a very deep depression in the ocean floor called a trench. • The worlds deepest parts of the ocean are found along trenches. – ...
Plate boundary Tour
... As you have learned, where there is upwelling of the asthenosphere, the crust above spreads apart, and new material from below bulges up into ridges. Where there is subsidence of the asthenosphere, the crust is being pulled down along with it to form depressions, or trenches. This can be visualized ...
... As you have learned, where there is upwelling of the asthenosphere, the crust above spreads apart, and new material from below bulges up into ridges. Where there is subsidence of the asthenosphere, the crust is being pulled down along with it to form depressions, or trenches. This can be visualized ...
A2 : Plate Tectonics (essay outline)
... 2. When the oceanic plate and continental plate diverge, magma rises from the upper mantle. It cools down and solidifies to form the oceanic ridge, with an axial rift on the top. 3. If magma ejects from a vent, submarine volcanoes which in time may grow above sea level, ...
... 2. When the oceanic plate and continental plate diverge, magma rises from the upper mantle. It cools down and solidifies to form the oceanic ridge, with an axial rift on the top. 3. If magma ejects from a vent, submarine volcanoes which in time may grow above sea level, ...
Key term
... Sea floor spreading These are formed when hot magma is forced up from the asthenosphere and hardens – forming new oceanic crust. The new crust pushes the tectonic plates apart in a process called sea floor spreading. Island arcs Volcanoes created as a result of subducted plates. These volcanoes rise ...
... Sea floor spreading These are formed when hot magma is forced up from the asthenosphere and hardens – forming new oceanic crust. The new crust pushes the tectonic plates apart in a process called sea floor spreading. Island arcs Volcanoes created as a result of subducted plates. These volcanoes rise ...
Key terms - Component 1 Word Document | GCSE
... setters to use these terms. Other terms and their definitions have been provided by WJEC to support those learners who are extending their range of specialist geographical terms. The lists are provided as word documents so that you can edit them to suit the learning activities in your school. ...
... setters to use these terms. Other terms and their definitions have been provided by WJEC to support those learners who are extending their range of specialist geographical terms. The lists are provided as word documents so that you can edit them to suit the learning activities in your school. ...
Pre-Test
... found in the lava are similar to those found in ancient asteroids. This fact leads scientists to infer that the lava may be as old as our solar system and that it comes from deep inside the mantle near Earth’s outer core. Nyiragongo is one volcano in a ring of many volcanoes surrounding an area that ...
... found in the lava are similar to those found in ancient asteroids. This fact leads scientists to infer that the lava may be as old as our solar system and that it comes from deep inside the mantle near Earth’s outer core. Nyiragongo is one volcano in a ring of many volcanoes surrounding an area that ...
Plate Tectonics Review
... conclusion to draw from this evidence? a. Mesosaurus migrated across the ocean from location X to location Y. b. The continents of South America and Africa were joined when Mesosaurus lived. c. The present climates at locations X and Y are similar. 10. A chain of volcanoes commonly forms when a. a c ...
... conclusion to draw from this evidence? a. Mesosaurus migrated across the ocean from location X to location Y. b. The continents of South America and Africa were joined when Mesosaurus lived. c. The present climates at locations X and Y are similar. 10. A chain of volcanoes commonly forms when a. a c ...
Ecological Succession
... B. An undisturbed prairie C. An established mountain lake D. A newly formed volcanic island ...
... B. An undisturbed prairie C. An established mountain lake D. A newly formed volcanic island ...
Volcano
A volcano is a rupture on the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.Earth's volcanoes occur because its crust is broken into 17 major, rigid tectonic plates that float on a hotter, softer layer in its mantle. Therefore, on Earth, volcanoes are generally found where tectonic plates are diverging or converging. For example, a mid-oceanic ridge, such as the Mid-Atlantic Ridge, has volcanoes caused by divergent tectonic plates pulling apart; the Pacific Ring of Fire has volcanoes caused by convergent tectonic plates coming together. Volcanoes can also form where there is stretching and thinning of the crust's interior plates, e.g., in the East African Rift and the Wells Gray-Clearwater volcanic field and Rio Grande Rift in North America. This type of volcanism falls under the umbrella of ""plate hypothesis"" volcanism. Volcanism away from plate boundaries has also been explained as mantle plumes. These so-called ""hotspots"", for example Hawaii, are postulated to arise from upwelling diapirs with magma from the core–mantle boundary, 3,000 km deep in the Earth. Volcanoes are usually not created where two tectonic plates slide past one another.Erupting volcanoes can pose many hazards, not only in the immediate vicinity of the eruption. One such hazard is that volcanic ash can be a threat to aircraft, in particular those with jet engines where ash particles can be melted by the high operating temperature; the melted particles then adhere to the turbine blades and alter their shape, disrupting the operation of the turbine. Large eruptions can affect temperature as ash and droplets of sulfuric acid obscure the sun and cool the Earth's lower atmosphere (or troposphere); however, they also absorb heat radiated up from the Earth, thereby warming the upper atmosphere (or stratosphere). Historically, so-called volcanic winters have caused catastrophic famines.