test bank for sem 1 final 2014 File
... a. caldera b. shield volcano c. step volcano d. composite volcano 18) Which type of volcano is tall with steep slopes and has magma of high-silica content? a. step volcano b. composite volcano c. shield volcano d. caldera 19) Which is most likely to erupt explosively? a. Magma with high silica conte ...
... a. caldera b. shield volcano c. step volcano d. composite volcano 18) Which type of volcano is tall with steep slopes and has magma of high-silica content? a. step volcano b. composite volcano c. shield volcano d. caldera 19) Which is most likely to erupt explosively? a. Magma with high silica conte ...
Geology Final Exam Review 1st Semester What drives Earth`s rock
... 2. What are the textures of igneous rocks? a. Describe what causes the different textures. 3. Tell the differences between gabbro and granite. 4. List the 3 main compositional types of igneous rocks. a. Describe the mineral differences for each type. 5. List the 3 main types of volcanoes. a. Describ ...
... 2. What are the textures of igneous rocks? a. Describe what causes the different textures. 3. Tell the differences between gabbro and granite. 4. List the 3 main compositional types of igneous rocks. a. Describe the mineral differences for each type. 5. List the 3 main types of volcanoes. a. Describ ...
Chapter 9 Volcanoes
... living in Indonesia. It also affected the climate worldwide. Ash and dust from the explosion flew into the upper atmosphere. There, they spread across the Earth. They blocked sunlight from reaching the Earth’s surface. As a result, global temperatures dropped. In 1816, there was a snowstorm in June! ...
... living in Indonesia. It also affected the climate worldwide. Ash and dust from the explosion flew into the upper atmosphere. There, they spread across the Earth. They blocked sunlight from reaching the Earth’s surface. As a result, global temperatures dropped. In 1816, there was a snowstorm in June! ...
File
... 18. The place where lithospheric plates meet are called plate boundaries. There are 3 types of plate boundaries. Write the types of boundaries, then study the illustrations at the bottom of the pages. a) ____________________ boundaries- plates move away from each other. b) ____________________bounda ...
... 18. The place where lithospheric plates meet are called plate boundaries. There are 3 types of plate boundaries. Write the types of boundaries, then study the illustrations at the bottom of the pages. a) ____________________ boundaries- plates move away from each other. b) ____________________bounda ...
VOLCANOES - mmconcepcion
... volcanic gases escape onto the ground or into the atmosphere. Vents may consist of a single circular-shaped structure, a large elongate crack or a tiny ground crack. ...
... volcanic gases escape onto the ground or into the atmosphere. Vents may consist of a single circular-shaped structure, a large elongate crack or a tiny ground crack. ...
Cross-section of East African Rift Valley
... The occurrence of earthquakes along the crest of the mid-ocean ridge system, the dearth of sediments at ridge crests and the active volcanic islands associated with the crest of the Mid-Atlantic Ridge are all readily explained by Hess's model. Moreover, the ocean basins as a whole contain a remarkab ...
... The occurrence of earthquakes along the crest of the mid-ocean ridge system, the dearth of sediments at ridge crests and the active volcanic islands associated with the crest of the Mid-Atlantic Ridge are all readily explained by Hess's model. Moreover, the ocean basins as a whole contain a remarkab ...
Evidence of continental drift
... to the top of the mantle, then it cools and sinks again, creating a constant circulation in the mantle. ...
... to the top of the mantle, then it cools and sinks again, creating a constant circulation in the mantle. ...
Earthquakes and Volcanoes – the essentials!
... This is where two plates diverge and pull apart. As a gap appears between the two plates, lava can escape in a line or fissure. The lava creates new oceanic crust and forms mid-ocean ridges such as the one that runs down the centre of the Atlantic Ocean. Volcanoes can be found in certain locations b ...
... This is where two plates diverge and pull apart. As a gap appears between the two plates, lava can escape in a line or fissure. The lava creates new oceanic crust and forms mid-ocean ridges such as the one that runs down the centre of the Atlantic Ocean. Volcanoes can be found in certain locations b ...
Chapter 14 Test Bank Questions [Please note
... B) physical signs of ground movement C) the physical characteristics of rocks at the epicenter D) damage done to structures Ans: Blooms Level: Understanding Difficulty: Medium Learning Objective: 14.4 Describe the types of seismic waves produced by earthquakes, how earthquakes are ranked, and what c ...
... B) physical signs of ground movement C) the physical characteristics of rocks at the epicenter D) damage done to structures Ans: Blooms Level: Understanding Difficulty: Medium Learning Objective: 14.4 Describe the types of seismic waves produced by earthquakes, how earthquakes are ranked, and what c ...
Plate Tectonics Subduction zone Magma Taupo volcanic
... Auckland volcanic field Unlike the Taupo Volcanic Zone, the volcanoes of Auckland are not related to a plate boundary. Instead, they have formed in the middle of a plate. This sort of activity is known as ‘intraplate’ volcanism. Sometimes these areas of intraplate volcanism are referred to as “hotpo ...
... Auckland volcanic field Unlike the Taupo Volcanic Zone, the volcanoes of Auckland are not related to a plate boundary. Instead, they have formed in the middle of a plate. This sort of activity is known as ‘intraplate’ volcanism. Sometimes these areas of intraplate volcanism are referred to as “hotpo ...
Volcanic Eruption Hazard Annex
... Jackson County, and the Pacific Northwest, lie within the “ring of fire,” an area of very active volcanic activity surrounding the Pacific Basin. Volcanic eruptions occur regularly along the ring of fi ...
... Jackson County, and the Pacific Northwest, lie within the “ring of fire,” an area of very active volcanic activity surrounding the Pacific Basin. Volcanic eruptions occur regularly along the ring of fi ...
Introducing Igneous Rocks
... Magma is the name given to liquid rock under the surface. In reality it is a complex mixture of substances, mostly silicate minerals plus water and gases. The amount of silica is a very important factor in controlling the behaviour of the magma. Magma rich in silica (>66%) is called acidic, medium a ...
... Magma is the name given to liquid rock under the surface. In reality it is a complex mixture of substances, mostly silicate minerals plus water and gases. The amount of silica is a very important factor in controlling the behaviour of the magma. Magma rich in silica (>66%) is called acidic, medium a ...
Review Sheet Test 2
... calculate gradient; 3 ways to melt rock: heat, decompression melting, presence of volatiles such as water . Bowens Reaction Series Fig. 4.23; Ways to vary magma composition: crystal settling (also called magmatic differentiation), magma mixing, melting of crust Partial melting; pluton, magma, lava, ...
... calculate gradient; 3 ways to melt rock: heat, decompression melting, presence of volatiles such as water . Bowens Reaction Series Fig. 4.23; Ways to vary magma composition: crystal settling (also called magmatic differentiation), magma mixing, melting of crust Partial melting; pluton, magma, lava, ...
Climate Change
... Earthquake events Earthquakes occur when movements of the tectonic plates occur. Typically pressure builds up between two plates and eventually the pressure is released. When this happens it constitutes and earthquake. The exact place where an earthquake occurs, the point at which the pressure is r ...
... Earthquake events Earthquakes occur when movements of the tectonic plates occur. Typically pressure builds up between two plates and eventually the pressure is released. When this happens it constitutes and earthquake. The exact place where an earthquake occurs, the point at which the pressure is r ...
File
... What is the force that caused the continents to move? * (We know today that the convection currents in the mantle cause this movement. Lava lamp!) ...
... What is the force that caused the continents to move? * (We know today that the convection currents in the mantle cause this movement. Lava lamp!) ...
Earth Science Vocabulary Chapter 9: Plate Tectonics Section 9.1
... Oceanic Ridge- a continuous elevated zone on the floor of all the major ocean basins and varying in width from 1000 to 4000 kilometers; the rifts at the crests of ridges represent divergent plate boundaries Rift Valley- deep vaulted structure found along the axes of divergent plate boundaries; rift ...
... Oceanic Ridge- a continuous elevated zone on the floor of all the major ocean basins and varying in width from 1000 to 4000 kilometers; the rifts at the crests of ridges represent divergent plate boundaries Rift Valley- deep vaulted structure found along the axes of divergent plate boundaries; rift ...
Igneous Activity and Volcanism Homework
... 115. Large, volcanic depressions formed by subsidence and collapse are known as __________. 116. What kind of volcanoes are Mt. St. Helens and the other volcanoes of the Cascade range? 117. The most abundant gaseous component of magma that is typically vented via outgassing by a volcano, is ________ ...
... 115. Large, volcanic depressions formed by subsidence and collapse are known as __________. 116. What kind of volcanoes are Mt. St. Helens and the other volcanoes of the Cascade range? 117. The most abundant gaseous component of magma that is typically vented via outgassing by a volcano, is ________ ...
Igneous Activity and Volcanism Homework
... 115. Large, volcanic depressions formed by subsidence and collapse are known as __________. 116. What kind of volcanoes are Mt. St. Helens and the other volcanoes of the Cascade range? 117. The most abundant gaseous component of magma that is typically vented via outgassing by a volcano, is ________ ...
... 115. Large, volcanic depressions formed by subsidence and collapse are known as __________. 116. What kind of volcanoes are Mt. St. Helens and the other volcanoes of the Cascade range? 117. The most abundant gaseous component of magma that is typically vented via outgassing by a volcano, is ________ ...
Volcano Fact Sheets File
... •• It is an intra-plate or hot spot volcano, these occur away from plate boundaries and are not related to subduction. •• The volcano consists of scoria cones on top of a broad ring of lava flows. ...
... •• It is an intra-plate or hot spot volcano, these occur away from plate boundaries and are not related to subduction. •• The volcano consists of scoria cones on top of a broad ring of lava flows. ...
CASCADES OF LAVA. 441 through these numerous craters into the
... plete silence, and without any convulsion of the ground. Of the mountain, Mouna Loa, itself, a fearful ertiption took place in 1840, and it has since given repeated evidences of its activity. An eruption also occurred in 1843 from a crater about 2000 feet below the summit. A river of lava pouring do ...
... plete silence, and without any convulsion of the ground. Of the mountain, Mouna Loa, itself, a fearful ertiption took place in 1840, and it has since given repeated evidences of its activity. An eruption also occurred in 1843 from a crater about 2000 feet below the summit. A river of lava pouring do ...
Homework 3
... 1. There seems to be a contradiction! On page 73 of the text, it is claimed that “Lava with a high content of dissolved gases flows more readily (less viscous) than one with a lesser amount ...
... 1. There seems to be a contradiction! On page 73 of the text, it is claimed that “Lava with a high content of dissolved gases flows more readily (less viscous) than one with a lesser amount ...
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.