Учитель: Размахнина О
... superhot rock that extends down to the Earth's 3_____________. This region is so hot that molten rock can squeeze out and form giant bubbles of liquid 4______________ called magma 5_______________. This magma is lighter than the surrounding rock, so it rises up, finding cracks and weakness in the Ea ...
... superhot rock that extends down to the Earth's 3_____________. This region is so hot that molten rock can squeeze out and form giant bubbles of liquid 4______________ called magma 5_______________. This magma is lighter than the surrounding rock, so it rises up, finding cracks and weakness in the Ea ...
volcanoes stations
... 13. After looking at the samples, sketch the crystal sizes of each in the boxes below. Based on the picture of where each of these formed, fill in the blanks below for each sample with (cooled) quickly or slowly or quickly and slowly, large or small or large and small (crystals). Texture information ...
... 13. After looking at the samples, sketch the crystal sizes of each in the boxes below. Based on the picture of where each of these formed, fill in the blanks below for each sample with (cooled) quickly or slowly or quickly and slowly, large or small or large and small (crystals). Texture information ...
Chapter 2, Section 8
... Basalt flows can move at speeds of up to 10 km/h (kilometers per hour) on steep slopes. On a shallow slope, basalt flows move less than 1 km/h. Basalt flows within channels or lava tubes can travel very fast. They can reach speeds of 45 km/h. Basalt flows can cover a large area. The largest lava flo ...
... Basalt flows can move at speeds of up to 10 km/h (kilometers per hour) on steep slopes. On a shallow slope, basalt flows move less than 1 km/h. Basalt flows within channels or lava tubes can travel very fast. They can reach speeds of 45 km/h. Basalt flows can cover a large area. The largest lava flo ...
Shield Volcanoes Composite Volcanoes Cinder Cone Volcanoes
... Cinder cone volcanoes are smaller than shield volcanoes and composite volcanoes. If the eruption contains thick magma, the gas pressure shatters the rock within the volcano into small pieces. In other cases, the lava in the air may harden and fall as fragments. These small pieces are called cinders. ...
... Cinder cone volcanoes are smaller than shield volcanoes and composite volcanoes. If the eruption contains thick magma, the gas pressure shatters the rock within the volcano into small pieces. In other cases, the lava in the air may harden and fall as fragments. These small pieces are called cinders. ...
Unit 3 Section 2 Volcanoes Answer Key - WAHS
... A composite cone forms by many eruptions of material with medium or high-silica content. They erupt violently when pressure builds up in the magma. After the initial explosion, lots of gooey (viscous) lava oozes out of the top. The volcano becomes quiet for a while, but pressure builds and repeats t ...
... A composite cone forms by many eruptions of material with medium or high-silica content. They erupt violently when pressure builds up in the magma. After the initial explosion, lots of gooey (viscous) lava oozes out of the top. The volcano becomes quiet for a while, but pressure builds and repeats t ...
S05_4359_L24
... for industry and adornment. Ore deposits are unusually high concentrations of minerals or elements that can be economically exploited. Primary deposits form directly from magmatic processes (diamonds from kimberlites and lamproite volcanic vents, Pt, Ni, Cr in layered basaltic intrusions, rare metal ...
... for industry and adornment. Ore deposits are unusually high concentrations of minerals or elements that can be economically exploited. Primary deposits form directly from magmatic processes (diamonds from kimberlites and lamproite volcanic vents, Pt, Ni, Cr in layered basaltic intrusions, rare metal ...
Volcano - Greenwich Central School
... magma squeezes between layers of rock. A mass of rock formed when a large body of magma cooled inside the crust. ...
... magma squeezes between layers of rock. A mass of rock formed when a large body of magma cooled inside the crust. ...
Document
... What determines the degree of violence associated with volcanic activity? Whether eruptions are very explosive or relatively “quiet” is largely determined by two factors: (1) the amount of gas in the lava or magma and (2) the ease or difficulty with which the gas can escape to the atmosphere. The ...
... What determines the degree of violence associated with volcanic activity? Whether eruptions are very explosive or relatively “quiet” is largely determined by two factors: (1) the amount of gas in the lava or magma and (2) the ease or difficulty with which the gas can escape to the atmosphere. The ...
Volcanoes and volcanic eruptions
... During this time, Montserrat was devastated by pyroclastic flows. The small population of the island (11,000 people) was evacuated in 1995 to the north of Montserrat as well as to neighbouring islands and the UK. Despite the evacuations, 19 people were killed by the eruptions. This is because a smal ...
... During this time, Montserrat was devastated by pyroclastic flows. The small population of the island (11,000 people) was evacuated in 1995 to the north of Montserrat as well as to neighbouring islands and the UK. Despite the evacuations, 19 people were killed by the eruptions. This is because a smal ...
Volcanoes - geographylyndon
... • These are usually found at destructive boundaries. • Cone volcanoes are tall and steep-sided. • Cone volcanoes are formed by eruptions of thick, viscous (sticky) lava. • The thick lava moves relatively slowly and hardens quickly to form new rock - this explains the formation of a cone shape. • Eru ...
... • These are usually found at destructive boundaries. • Cone volcanoes are tall and steep-sided. • Cone volcanoes are formed by eruptions of thick, viscous (sticky) lava. • The thick lava moves relatively slowly and hardens quickly to form new rock - this explains the formation of a cone shape. • Eru ...
Volcanoes and Igneous Activity Earth
... and they have a mind of their own. There are volcanoes and supervolcanoes. ...
... and they have a mind of their own. There are volcanoes and supervolcanoes. ...
76 Volcanism and Igneous Processes I. Introduction A. Volcanism
... Flank Eruption- eruption of volcanic materials from side of Volcano, not through central vent. ...
... Flank Eruption- eruption of volcanic materials from side of Volcano, not through central vent. ...
Volcanoes
... O They are formed from layers of lava and ash. O Composite Cones are also known as stratovolcanoes. ...
... O They are formed from layers of lava and ash. O Composite Cones are also known as stratovolcanoes. ...
Hazard map for volcanic ballistic impacts at El Chichón volcano
... The 1982 eruption of El Chichón Volcano in southeastern Mexico had a strong social and environmental impact. The eruption resulted in the worst volcanic disaster in the recorded history of Mexico, causing about 2,000 casualties, displacing thousands, and producing severe economic losses. Even when s ...
... The 1982 eruption of El Chichón Volcano in southeastern Mexico had a strong social and environmental impact. The eruption resulted in the worst volcanic disaster in the recorded history of Mexico, causing about 2,000 casualties, displacing thousands, and producing severe economic losses. Even when s ...
What IS A VOLCANO?
... an inactive one. At the core of the earth is hot molten rock, magma. The molten rocks erupt through a volcano and come out as lava. The temperature of magma is extremely high while that of lava are lower as it cools down when it comes out under the atmosphere. The varying amount of heat causes a dif ...
... an inactive one. At the core of the earth is hot molten rock, magma. The molten rocks erupt through a volcano and come out as lava. The temperature of magma is extremely high while that of lava are lower as it cools down when it comes out under the atmosphere. The varying amount of heat causes a dif ...
File
... Volcanoes are formed when magma from within the Earth's upper mantle works its way to the surface. At the surface, it erupts to form lava flows and ash deposits. Over time as the volcano continues to erupt, it will get bigger and bigger. 3) What are the 3 different stages of a volcano? ...
... Volcanoes are formed when magma from within the Earth's upper mantle works its way to the surface. At the surface, it erupts to form lava flows and ash deposits. Over time as the volcano continues to erupt, it will get bigger and bigger. 3) What are the 3 different stages of a volcano? ...
GAPS Guidelines
... (32.2 km) of an active volcano and moderate exposure continuing to 40 mi (64.4 km). Volcanic effects within this range can include glowing ash cloud, tephra, pyroclastic flow, ash flow, lava flow, gases and mudflow. The explosion phenomena, aside from the audible report, is a strong airborne shock w ...
... (32.2 km) of an active volcano and moderate exposure continuing to 40 mi (64.4 km). Volcanic effects within this range can include glowing ash cloud, tephra, pyroclastic flow, ash flow, lava flow, gases and mudflow. The explosion phenomena, aside from the audible report, is a strong airborne shock w ...
Volcanoes
... 3. Vent – the opening through which molten rock and gas leave a volcano 4. Lava flow – the area cover by lava as it pours out of a volcano’s vent 5. Crater – a bowl-shaped area that forms around a volcano’s central opening ...
... 3. Vent – the opening through which molten rock and gas leave a volcano 4. Lava flow – the area cover by lava as it pours out of a volcano’s vent 5. Crater – a bowl-shaped area that forms around a volcano’s central opening ...
Predict Eruptions by
... Viscous lava traps the gases until large pressures build up & the system explodes Pyroclastic flow (ash, rock fragments) flow out of vent ...
... Viscous lava traps the gases until large pressures build up & the system explodes Pyroclastic flow (ash, rock fragments) flow out of vent ...
Lassen Volcanic National Park
... Lassen Volcanic’s 106,000 acres of land. There are cinder cone volcanoes, composite volcanoes, shield volcanoes, and lava dome volcanoes. A cinder cone volcano is the most simple type of volcano. They are blobs and particles of congealed lava that is ejected from a single vent. When the lava is blow ...
... Lassen Volcanic’s 106,000 acres of land. There are cinder cone volcanoes, composite volcanoes, shield volcanoes, and lava dome volcanoes. A cinder cone volcano is the most simple type of volcano. They are blobs and particles of congealed lava that is ejected from a single vent. When the lava is blow ...
Itcha Range
The Itcha Range is a small isolated mountain range in the West-Central Interior of British Columbia, Canada. It is located 40 km (25 mi) northeast of Anahim Lake on the Chilcotin Plateau. With a maximum elevation of 2,375 m (7,792 ft), it is the lowest of three mountain ranges extending east from the Coast Mountains. Two mountains are named in the Itcha Range; Mount Downton and Itcha Mountain. A large provincial park surrounds the Itcha Range and other features in its vicinity. More than 15 animal species are known to exist in the Itcha Range area, as well as a grassland community that is limited only to this location of British Columbia. The Itcha Range resides in the territory of aboriginal peoples who have occupied this region for centuries. This area has a relatively dry environment compared to the Coast Mountains in the west.In contrast to most mountain ranges in British Columbia, the Itcha Range represents an inactive shield volcano. This highly dissected volcanic edifice consists of a variety of rock types, including basanite, hawaiite, trachyte, rhyolite, phonolite and alkali olivine basalt. They were deposited by different types of volcanic eruptions characterized by passive lava flows and explosivity. Two stages of eruptive activity have been identified at the volcano along with three sub-phases that are limited only to the first stage of development. The main body of the Itcha Range is between 3.8 and 3.0 million years old and thus over two million years ago it passed the most active shield stage of life. A long period of dormancy lasting for almost a million years followed, which was interrupted by the post-shield stage of volcanism 2.2 to 0.8 million years ago. More recent volcanic activity in and around the Itcha Range might have occurred in the last 340,000 years to produce cinder cones.The Itcha Range is part of an east-west trending volcanic zone called the Anahim Volcanic Belt. This consists of large shield volcanoes, small cinder cones, lava domes and lava flows that become progressively younger from west to east. Several explanations have been made regarding the creation of this feature, each citing a different geologic process. If volcanic activity were to resume at the Itcha Range, Canada's Interagency Volcanic Event Notification Plan (IVENP) is prepared to notify people threatened by eruptions.