2nd period volcanoes2a

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2nd Period – Volcanoes(2a): 

2nd Period – Volcanoes(2a) By Monaya Dandan, Rachel Cooper, Michelle Mactas, and Dagny Holcomb

Amazing Volcanoes By: Rachel Cooper, Dagny Holcomb, Monaya Dandan, Michelle Mactus : 

Amazing Volcanoes By: Rachel Cooper, Dagny Holcomb, Monaya Dandan, Michelle Mactus

Volcanoes on Different Worlds: 

Volcanoes on Different Worlds Voyager 1, spacecraft in 1979 of volcanic activity on Triton, a moon of Neptune and Io, a moon on Jupiter. On Io sulfur erupts from the volcano. ON Triton, nitrogen erupts the volcano.

Volcanoes on the Moon: 

Volcanoes on the Moon Scientists studying Neptune’s moon Triton have found evidence of a process called cry volcanism. Cry volcanism resembles volcanic activity but it is driven by melted ice rather than magma. Volcano like vents on Triton erupt liquid nitrogen far above the moon’s frigid surface. Scientist think cry volcanism may occur on other cold bodies in the outer solar system.

Section 3 Volcanic Landforms: 

Section 3 Volcanic Landforms All about cinder cones, shield valcanoes, composite valcanoes and more.

Landforms from lava and ash: 

Landforms from lava and ash Rocks and others materials can create a variety of landforms like cinder cone, shield, and composite valcanoes. Another thing that can get formed is lava plateaus. Some volcanic landforms arise when lava flows build up mountains and plateaus on earth’s surface.

Shield, Cinder Cone, Composite Volcanoes and Lava plateaus : 

Shield, Cinder Cone, Composite Volcanoes and Lava plateaus Shield volcanoes are wide flat volcanoes. Cinder Cone volcanoes are steep cone shaped volcanoes with a big pipe. Composite volcanoes are also cone shaped volcanoes with a small pipe. Lava plateaus are plateaus made out of lava and ash, instead of being a mountain it forms to a lava plateau.

Landforms from magma: 

Landforms from magma Landforms formed by magma include volcanic necks, Dikes, and Sills A volcanic neck forms when magma cools and hardens in the volcanoes pipe A dike forms when magma forces itself across rock layers and hardens. Sills form when magma squeezes between layers of rock.

Volcanoes : 

Volcanoes Volcanoes and Plate Tectonics, what are they?

Volcano - a weak spot in the crust where molten material or magma reaches the surface.: 

Volcano - a weak spot in the crust where molten material or magma reaches the surface. Ring of fire- a major volcano belt that circles the pacific ocean. Hot spots- an area where magma from deep within the mantel, rises to the surface.

Location of volcanoes : 

Location of volcanoes Most volcanoes form around the diverging plate. Such as the mid- ocean ridge and subduction zones. Along the ridge, lava pours out of cracks in the ocean floor therefore creating land.

Section 2 Volcanic Activity: 

Section 2 Volcanic Activity Everything you need to know about magma, volcanoes ,lava, and much more!

PARTS OF THE VOLCANO AND MAGMA REACHING THE EARTHS SURACE: 

PARTS OF THE VOLCANO AND MAGMA REACHING THE EARTHS SURACE Starts in the mantle –forms in the asthenosphere Magma rises because less dense than the surrounding solid material Volcanoes erupt when gases are under tremendous pressure Magma chamber-is where magma collects Lava flow – area covered by lava as it flows out of a vent Molten rock and gas leave the volcano through an opening called a vent Crater is a bowl shaped area that may form at the top of the volcano or around the central vent

CHARACTERISTICS OF MAGMA TYPES OF VOLCANIC ERUPTIONS: 

CHARACTERISTICS OF MAGMA TYPES OF VOLCANIC ERUPTIONS Important factors- how thick or thin magma its temperature + silica Silica-matieral made of silicon + oxgen-the more silica the thicker- silica helps determine the type of volcanic eruption it is Quiet eruptions-magma flows easily-produce two types of lava Pahoehoe-fast moving hot lava Aa-cooler and slower moving lava Explosive eruptions- thick and sticky magma Proclastic flow- occurs when explosive eruptions hurl out ash, cinders, and bombs

STAGES OF A VOLCANO OTHER TYPES OF VOLCANIC ACTIVITY: 

STAGES OF A VOLCANO OTHER TYPES OF VOLCANIC ACTIVITY Dormat/sleeping-like a sleeping bear Active/live-signs have shown it may erupt now or in the near future Extinct/dead-unlikely to erupt again Two examples of volcanic activity that do not involve eruption of lava are A hot spring-forms when ground water heated by magma rises to the surface-collects in a natural pool Geyser-fountain of water + steam-erupts from the ground Geothermal energy-in volcanic areas where water heated by magma can provide a clean reliable energy source

VOLCANIC HAZARDS: 

VOLCANIC HAZARDS Both types of eruptions cause damage from the craters rim Lava flows-pour from vents setting fire to them burning everything in their path Volcanic ash-bury entire towns-damage crops-clog car engines and cause roofs to collapse A volcano can hurl out burning clouds of volcanic gases + cinders + bombs

Bibliography: 

Bibliography Rachel Cooper – Monaya Dandan – Dagny Holcomb – Michelle Mactas -

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