HST_CRF_04_02_03.qxd
... Directed Reading B Section: Volcanic Eruptions Circle the letter of the best answer for each question. ...
... Directed Reading B Section: Volcanic Eruptions Circle the letter of the best answer for each question. ...
Putting the Lava in the Lava Beds
... tube caves. Connected to the earliest activity is the formation known as Gillem Bluff which resulted from faulting of the earth's crust. The bluff displays layers of basalt that are believed to be over a million years old. Covering almost the entire monument are small bits of pumice which formed as ...
... tube caves. Connected to the earliest activity is the formation known as Gillem Bluff which resulted from faulting of the earth's crust. The bluff displays layers of basalt that are believed to be over a million years old. Covering almost the entire monument are small bits of pumice which formed as ...
Earth Science--Ch 9 Volcanoes Review Guide
... What is a hot spot?/ Where does most hot spot volcanic activity occur? Do hot spots move? What are the locations of some hot spots? What state was formed by a hot spot? ...
... What is a hot spot?/ Where does most hot spot volcanic activity occur? Do hot spots move? What are the locations of some hot spots? What state was formed by a hot spot? ...
Chapter_9-Volcanoes
... Dissolved gases in the magma (volatiles) Viscosity of magma (Viscosity is a measure of a material's resistance to flow; it is determined by the amount of silica content in the magma) ...
... Dissolved gases in the magma (volatiles) Viscosity of magma (Viscosity is a measure of a material's resistance to flow; it is determined by the amount of silica content in the magma) ...
Lesson 2 - Humanities.Com
... – this is known as the Ring of Fire They don’t tend to occur away from boundaries. ...
... – this is known as the Ring of Fire They don’t tend to occur away from boundaries. ...
Volcanoes PPT - Van Buren Public Schools
... volcanic rock is produced along the oceanic ridge system. • Lithosphere pulls apart. • Less pressure on underlying rocks • Partial melting occurs • Large quantities of fluid basaltic magma are produced. ...
... volcanic rock is produced along the oceanic ridge system. • Lithosphere pulls apart. • Less pressure on underlying rocks • Partial melting occurs • Large quantities of fluid basaltic magma are produced. ...
Earth Science Chapter 6 Volcanoes
... Made mostly of cinders and other rock particle Little or no lava flows Formed from explosive type volcanoes Narrow base and steep sides ...
... Made mostly of cinders and other rock particle Little or no lava flows Formed from explosive type volcanoes Narrow base and steep sides ...
3 types of Volcanoes Reading
... Cinder cone volcanoes are small volcanic cones made entirely of pyroclastic material from moderately explosive eruptions. The pyroclastic material forms steeper slopes with a narrower base than the lava flows of shield volcanoes, as you can see in this photo of the volcano Paricutín, in Mexico. Cind ...
... Cinder cone volcanoes are small volcanic cones made entirely of pyroclastic material from moderately explosive eruptions. The pyroclastic material forms steeper slopes with a narrower base than the lava flows of shield volcanoes, as you can see in this photo of the volcano Paricutín, in Mexico. Cind ...
Effects of Volcanic Eruptions
... • Enough sunlight may be absorbed or scattered to lower the average global temperature of Earth. • In 1991, after the eruption of Mount Pinatubo in the Philippines, the amount of sunlight to reach Earth’s surface decreased by 2-4%. • This decrease caused the average global temperature of Earth to d ...
... • Enough sunlight may be absorbed or scattered to lower the average global temperature of Earth. • In 1991, after the eruption of Mount Pinatubo in the Philippines, the amount of sunlight to reach Earth’s surface decreased by 2-4%. • This decrease caused the average global temperature of Earth to d ...
composite volcanoes - Mesa Public Schools
... Mt. St. Helens blew a cloud of rock, ash and gas which was spread over a large area, killing trees, animals and at least 70 people. This large volcano is a relatively new mountain. Geologists estimate its age to be only about 40,000 years old. During the past 4,500 years, Mt. St. Helens has been the ...
... Mt. St. Helens blew a cloud of rock, ash and gas which was spread over a large area, killing trees, animals and at least 70 people. This large volcano is a relatively new mountain. Geologists estimate its age to be only about 40,000 years old. During the past 4,500 years, Mt. St. Helens has been the ...
Volcano and extrusive igneous rock notes
... • shield volcanoes have gently sloping sides and a broad base. The tallest mountains in the solar system are shield volcanoes: Hawaii (Earth) and Olympus Mons (Mars). All of the Hawaiian Islands are shield volcanoes. • composite volcanoes or stratavolcanoes have steeply sloping sides and a relativel ...
... • shield volcanoes have gently sloping sides and a broad base. The tallest mountains in the solar system are shield volcanoes: Hawaii (Earth) and Olympus Mons (Mars). All of the Hawaiian Islands are shield volcanoes. • composite volcanoes or stratavolcanoes have steeply sloping sides and a relativel ...
Active
... Most are at convergent plate boundaries in Alaska and N. California, Oregon, and Washington. These are all stratovolcanoes, which are the most dangerous in terms of explosive activity. Some are on or near hotspots: Hawaii’s volcanoes, and Yellowstone Some are former CPB: Central and Southern Califor ...
... Most are at convergent plate boundaries in Alaska and N. California, Oregon, and Washington. These are all stratovolcanoes, which are the most dangerous in terms of explosive activity. Some are on or near hotspots: Hawaii’s volcanoes, and Yellowstone Some are former CPB: Central and Southern Califor ...
Directed Reading
... 22. Large clots of red-hot lava that are thrown out of an erupting volcano and then spun through the air as they cool, developing a round or spindle shape, are called ______________________. 23. The largest pyroclastic particles, which form from solid rock blasted from the vent of a volcano, are cal ...
... 22. Large clots of red-hot lava that are thrown out of an erupting volcano and then spun through the air as they cool, developing a round or spindle shape, are called ______________________. 23. The largest pyroclastic particles, which form from solid rock blasted from the vent of a volcano, are cal ...
volcanoes - WISMYPScience
... The entire Cascade Range in the Pacific Northwest is made up of a dozen active strato-volcanoes These volcanoes are explosive because of the type of magma that erupts out of them The subducting oceanic Juan de Fuca plate has a high amount of water dissolved in it It melts and rises up through the co ...
... The entire Cascade Range in the Pacific Northwest is made up of a dozen active strato-volcanoes These volcanoes are explosive because of the type of magma that erupts out of them The subducting oceanic Juan de Fuca plate has a high amount of water dissolved in it It melts and rises up through the co ...
Types of Volcanoes Dangers from Composite Cones Pyroclastic
... Viscosity = a substance’s resistant to flow The viscosity of magma as it rises inside the volcano can affect the type of eruption. ...
... Viscosity = a substance’s resistant to flow The viscosity of magma as it rises inside the volcano can affect the type of eruption. ...
Volcanoes and Other Igneous Activity
... Students know evidence of plate tectonics is derived from the fit of the continents; the location of earthquakes, volcanoes, and mid-ocean ridges; and the distribution of fossils, rock types, and ancient climatic ...
... Students know evidence of plate tectonics is derived from the fit of the continents; the location of earthquakes, volcanoes, and mid-ocean ridges; and the distribution of fossils, rock types, and ancient climatic ...
Debris Flows and Avalanches
... Debris Avalanches • First recognized and described from 1980 St. Helen’s eruption • Here DA buried 60 km2 of terrain to an average depth of 45m, maximum depth was 200m, deposits 2km wide and 25km long • Became debris flows by sliding into Spirit Lake and the Touttle river ...
... Debris Avalanches • First recognized and described from 1980 St. Helen’s eruption • Here DA buried 60 km2 of terrain to an average depth of 45m, maximum depth was 200m, deposits 2km wide and 25km long • Became debris flows by sliding into Spirit Lake and the Touttle river ...
Natural Disaster Project Top Ten Volcanic Eruptions Rank Event
... 2. Krakatoa was a volcanic island in the Sunda Strait between the islands of Java and Sumatra in Indonesia. The island exploded in 1883, killing approximately 40,000 people, although some estimates put the death toll much higher. The explosion is still considered to be the loudest sound ever heard i ...
... 2. Krakatoa was a volcanic island in the Sunda Strait between the islands of Java and Sumatra in Indonesia. The island exploded in 1883, killing approximately 40,000 people, although some estimates put the death toll much higher. The explosion is still considered to be the loudest sound ever heard i ...
Chapter 6 Study Guide
... An are where magma melts through the crust in the middle of a plate is called a(n) ________________. Inside a volcano, magma collects in a pocket called a ________________. Magma from and explosive eruption is ______ and ________, has __________, and is high in ________. Volcanic soils are fertile b ...
... An are where magma melts through the crust in the middle of a plate is called a(n) ________________. Inside a volcano, magma collects in a pocket called a ________________. Magma from and explosive eruption is ______ and ________, has __________, and is high in ________. Volcanic soils are fertile b ...
Volcanoes - Mrs. Frenette's Webpage
... they form. As you read, listen to your inner voice to monitor your understanding, and reread or use the photos and the map to ...
... they form. As you read, listen to your inner voice to monitor your understanding, and reread or use the photos and the map to ...
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.