Volcanoes

Science, Grade 6

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SHIELD VOLCANO COMPOSITE VOLCANO CINDER CONE What is a volcano? A volcano is a rupture in the surface of one of Earth’s plates which allows hot, molten rock, ash, and gases to escape from below the surface. Ash cloud An ash cloud consists of bits of pulverized rock that spews into the air during a volcanic eruption. Crater At the top of many volcanoes is a funnel-shaped depression or crater formed during an eruption. Caldera A caldera is a circular depression that forms when a magma reservoir empties and causes the ground above to sink. Lava Lava is magma that flows on the Earth’s surface. Vent Pipe Geyser A geyser is a natural fountain that shoots hot groundwater and steam hundreds of feet into the sky at regular intervals. Basalt plain A basalt plain is a new crust that forms from lava that spills out onto nearby ground. Magma reservoir The intense heat and pressures in the mantle turn solid rock into liquid magma. Types of volcanoes Volcanoes can also be classified based on their shape. The three categories are cinder cones, shield volcanoes and composite volcanoes. Volcanoes © Copyright NewPath Learning. All Rights Reserved. 94-4607 www.newpathlearning.com Mount Saint Helens, 1980 crater central vent central vent central vent magma chamber layers of cinders ash layer lava layer side vent
What is a volcano? A ______________________ is a rupture in the surface of one of Earth’s plates which allows hot, molten rock, ash, and gases to escape from below the surface. Types of volcanoes Volcanoes can also be classified based on their shape. The three categories are: ______________________ ______________________ ______________________ An _____________ _____________ consists of bits of pulverized rock that spews into the air during a volcanic eruption. At the top of many volcanoes is a _____________________ or _____________________ formed during an eruption. A _____________________ is a __________________ ___________________ that forms when a _____________ ______________ empties and causes the ground above to sink. Lava is ____________________ that flows on the Earth’s surface. A ______________________ is a natural fountain that shoots hot groundwater and steam hundreds of feet into the sky at regular intervals. A ______________________ is a new crust that forms from lava that spills out onto nearby ground. The intense heat and pressures in the mantle turn solid rock into liquid ____________________ . Key Vocabulary Terms Type of volcano: Type of volcano: Type of volcano: Volcanoes © Copyright NewPath Learning. All Rights Reserved. 94-4607 www.newpathlearning.com \|xiBAHBDy01796nzW