Converging Plate Boundaries
... lithospheric slabs, thereby producing an inclined zone of earthquakes that dips into the Earth’s upper mantle typically at angles of 40°– 60° from the horizontal. Earthquakes can occur at any depth within the sinking slab, from shallow (0 - 60 km) to as great as 700 km. Over three-quarters of the wo ...
... lithospheric slabs, thereby producing an inclined zone of earthquakes that dips into the Earth’s upper mantle typically at angles of 40°– 60° from the horizontal. Earthquakes can occur at any depth within the sinking slab, from shallow (0 - 60 km) to as great as 700 km. Over three-quarters of the wo ...
Geography Plate Tectonics Earthquakes Volcanoes
... When the magma flows out onto the land slowly, it may spread across an area and cool. ...
... When the magma flows out onto the land slowly, it may spread across an area and cool. ...
Moving Earth - Michigan Department of Education Technology
... Plate motions result in potentially catastrophic events (earthquakes, volcanoes, tsunamis, mass wasting) that affect humanity. The intensity of volcanic eruptions is controlled by the chemistry and properties of the magma. Earthquakes are the result of abrupt movements of the Earth. They generate en ...
... Plate motions result in potentially catastrophic events (earthquakes, volcanoes, tsunamis, mass wasting) that affect humanity. The intensity of volcanic eruptions is controlled by the chemistry and properties of the magma. Earthquakes are the result of abrupt movements of the Earth. They generate en ...
Changing Earth/Earth System
... Grade Level Indicators and Sub-Indicators a.8.9 Describe the interior structure of Earth and Earth’s crust as divided into tectonic plates riding on top of the slow moving currents of magma in the mantle. a.8.10 Explain that most major geological events (e.g., earthquakes, volcanic eruptions, hot sp ...
... Grade Level Indicators and Sub-Indicators a.8.9 Describe the interior structure of Earth and Earth’s crust as divided into tectonic plates riding on top of the slow moving currents of magma in the mantle. a.8.10 Explain that most major geological events (e.g., earthquakes, volcanic eruptions, hot sp ...
SuperVolcanoQuestions
... The questions in the left column go in order with the movie. The questions in the right column need to be answered throughout viewing the next 45 minutes. 1. Why did the government want the scientists 1. What are some of the things to lie about the size of the eruption? that the citizens and governm ...
... The questions in the left column go in order with the movie. The questions in the right column need to be answered throughout viewing the next 45 minutes. 1. Why did the government want the scientists 1. What are some of the things to lie about the size of the eruption? that the citizens and governm ...
Virtual Volcano Lab - www .alexandria .k12 .mn .us
... a. How are they made?_______________________________________________ b. Look like—______________________________________________________ c. A famous shield volcano & where it’s located: ____________________________ 4) Which type of volcano is the following? (Stratovolcano, Cinder Cone, or Shield vol ...
... a. How are they made?_______________________________________________ b. Look like—______________________________________________________ c. A famous shield volcano & where it’s located: ____________________________ 4) Which type of volcano is the following? (Stratovolcano, Cinder Cone, or Shield vol ...
PT Test review
... 30) ___________ African 31) ___________ Australian 32) ___________ South American ...
... 30) ___________ African 31) ___________ Australian 32) ___________ South American ...
Volcanoes - Library Video Company
... blown from the vent. This type of volcano is not very tall (less than 500 meters) and has steep sides with a bowl-shaped crater. A shield volcano is formed of light lava that oozes gently, slowly building up layer upon layer of hard volcanic rock called basalt.The tallest and most explosive volcanoe ...
... blown from the vent. This type of volcano is not very tall (less than 500 meters) and has steep sides with a bowl-shaped crater. A shield volcano is formed of light lava that oozes gently, slowly building up layer upon layer of hard volcanic rock called basalt.The tallest and most explosive volcanoe ...
Scott Foresman Science
... on Earth’s surface directly above the focus is called the epicenter. Energy from an earthquake is released in waves. Vibrations in the form of waves spread out from the focus and the epicenter. Waves cause the ground to move back and forth, up and down, or in a circular motion. As the waves spread o ...
... on Earth’s surface directly above the focus is called the epicenter. Energy from an earthquake is released in waves. Vibrations in the form of waves spread out from the focus and the epicenter. Waves cause the ground to move back and forth, up and down, or in a circular motion. As the waves spread o ...
natural disasters
... surface. This is where eruptions take place. The volcanoes around Hawaii are not created by a tectonic plate, but hot spots. Hot spots are places that have fierce heat in the mantle. This heat causes magma to bubble and move to the surface. The scientists believe that these volcanoes were formed by ...
... surface. This is where eruptions take place. The volcanoes around Hawaii are not created by a tectonic plate, but hot spots. Hot spots are places that have fierce heat in the mantle. This heat causes magma to bubble and move to the surface. The scientists believe that these volcanoes were formed by ...
powerpoint_6.1_Volacanoes_and_Plate_Tectonics
... – A dead volcano. It is unlikely to erupt again. ...
... – A dead volcano. It is unlikely to erupt again. ...
Appendix: Acronyms and Glossaries
... peléean: The name derives from the explosive eruptions at Mount Pelée in 1902 when nuées ardentes were first described and named. Both terms are no longer volcanologically fashionable. plinian: Paroxysmal ejections of large volumes of pyroclastic materials, at times accompanied by caldera formation. ...
... peléean: The name derives from the explosive eruptions at Mount Pelée in 1902 when nuées ardentes were first described and named. Both terms are no longer volcanologically fashionable. plinian: Paroxysmal ejections of large volumes of pyroclastic materials, at times accompanied by caldera formation. ...
What are Volcanoes?
... and gases shoot out from the volcano, often at supersonic speeds. Instead of lava these volcanoes blow molten rock into the air where it will harden. The larger pieces fall to the Earth and the smaller portions can circle the globe for years in the upper atmosphere. ...
... and gases shoot out from the volcano, often at supersonic speeds. Instead of lava these volcanoes blow molten rock into the air where it will harden. The larger pieces fall to the Earth and the smaller portions can circle the globe for years in the upper atmosphere. ...
Chapter 2 Test
... 14. How do large amounts of volcanic gases affect weather around Earth? Why? Volcanic gases can form a haze that clocks sunlight and lowers average temperatures. They also cause acid ...
... 14. How do large amounts of volcanic gases affect weather around Earth? Why? Volcanic gases can form a haze that clocks sunlight and lowers average temperatures. They also cause acid ...
Chapter 7 - Florida Gateway College
... Large thick and viscous pyroclastic flows Thick flows of andesitic to felsic lava ...
... Large thick and viscous pyroclastic flows Thick flows of andesitic to felsic lava ...
Test 4/Homework 4 (Chapter 9 Volcanoes)
... Large thick and viscous pyroclastic flows Thick flows of andesitic to felsic lava ...
... Large thick and viscous pyroclastic flows Thick flows of andesitic to felsic lava ...
Chapter 9: Causes of Volcanic Eruptions
... • This is similar to what happens at a convergent boundary. A convergent boundary is a place where tectonic plates collide. • When an oceanic plate collides with a continental plate, the oceanic plate usually slides underneath the continental plate. • The process of subduction, the movement of one t ...
... • This is similar to what happens at a convergent boundary. A convergent boundary is a place where tectonic plates collide. • When an oceanic plate collides with a continental plate, the oceanic plate usually slides underneath the continental plate. • The process of subduction, the movement of one t ...
2.2 Notes
... Colliding and Spreading Plates • One way that mountain ranges form is in a process called subduction, when a sea plate collides with and dives beneath a continental plate. • Continents grow in a process called accretion, when pieces of the earth’s crust come together slowly as a sea plate slides un ...
... Colliding and Spreading Plates • One way that mountain ranges form is in a process called subduction, when a sea plate collides with and dives beneath a continental plate. • Continents grow in a process called accretion, when pieces of the earth’s crust come together slowly as a sea plate slides un ...
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.