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| Where is Krakatau? How was it formed? |
Krakatau is a volcanic island in the Indonesian chain, and was formed by the subduction of the Indian Plate under the Eurasian Plate. |
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chunsah Wed, 07 May 2008 03:13:38 GMT |
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| Vesuvius and other volcanoes of the Mediterranean are caused by what? |
the subduction of the African Plate beneath the Eurasian Plate |
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chunsah Wed, 07 May 2008 03:13:38 GMT |
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| Where is Kilauea? |
Kilauea is a shiled volcano on the island of Hawaii |
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chunsah Wed, 07 May 2008 03:13:38 GMT |
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| where is Eldfell? |
Eldfell is a volcanic mountain on Heimaey, a small island off the south coast of Iceland located near the mid-Atlantic Ridge |
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chunsah Wed, 07 May 2008 03:13:38 GMT |
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| a small batholith in which less than 100 square kilometers is exposed at the surface |
stock |
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chunsah Wed, 07 May 2008 03:13:38 GMT |
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| the largest of all igneous intrusions that formed the cores of many of earth's mountain ranges. |
batholiths |
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chunsah Wed, 07 May 2008 03:13:38 GMT |
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| the plug of hardened magma left in the vent from which lava flowed |
volcanic neck |
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chunsah Wed, 07 May 2008 03:13:38 GMT |
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| magmas bulge upward to form a domelike mass due to the stiffness of the magma |
laccoliths |
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chunsah Wed, 07 May 2008 03:13:38 GMT |
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| sheets of igneous rock that are parallel to the layers they intrude |
sills |
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chunsah Wed, 07 May 2008 03:13:38 GMT |
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| sheets of igneous rock that cut across the rock layers they intrude |
dikes |
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chunsah Wed, 07 May 2008 03:13:38 GMT |
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| where do rift eruptions occur? |
at long, narrow fractures in the crust |
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chunsah Wed, 07 May 2008 03:13:38 GMT |
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| the opening through which magma erupts |
volcano |
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chunsah Wed, 07 May 2008 03:13:38 GMT |
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| what are the examples of plutons? |
dikes, sills, laccoliths, volcanic necks, batholiths, and stocks |
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chunsah Wed, 07 May 2008 03:13:38 GMT |
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| what are plutons? |
the rock masses that form when magma cools inside other rocks. aka igneous intrusions |
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chunsah Wed, 07 May 2008 03:13:38 GMT |
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| how does the moon, Mars, and Io show evidence of plate tectonics? |
they don't. |
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chunsah Wed, 07 May 2008 03:13:38 GMT |
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| how does Io show evidence of volcanic activity? |
Io has over 100 volcanoes |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| how does Mars show evidence of volcanic activity? |
Mars has a number of volcanic cones |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| how does the moon show evidence of volcanic activity? |
the moon has extensive lava flows |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| what shows evidence of extraterrestrial volcanism? |
the moon, Mars, and Jupiter's moon Io |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| Vesuvius, Krakatau, Crater Lake, and Mount Pinatubo occurred where? |
subduction boundaries |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| Kilauea is an example of what eruption? |
hot spot eruption |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| Mount St. Helens is an example of what eruption? |
subduction boundary eruption |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| Eldfell is an example of what eruption? |
rift eruption |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| __________ form a string of volcanoes in the middle of moving lithospheric plates. The Hawaiian Islands are an example |
hot spots |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| what results from the magma at subduction boundaries? |
explosive eruptions of tephra that form cinder cones |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| what are features of subduction boundary eruptions? |
island chains and young mountains |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| when the basalt of plateaus and other thick lava flows on land cool, they may display a unique pattern of closely packed, six-sided columns called...? |
columnar jointing |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| what can result from a rift eruption on land? |
shield cones or huge lava plateaus. |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| how does the lava behave at rift eruptions? |
lava flows out smoothly at rift eruptions on seafloor or on land |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| what are the examples of tephra? |
ash, lapilli, blocks, and bombs |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| what are the solid fragments of lava called? |
tephra |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| what makes magma explosive or not? |
the amount of gas within the magma that either escapes easily or cannot escape easily |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| what kind of magma is poor in silica, thin, dark colored, fast moving, and pour out onto the surface smoothly? |
mafic |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| what kind of magma is rich in silica, thick, light colored, slow moving, and explosive? |
felsic |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| what is lava? |
molten rock that reaches the surface |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| what is magma? |
molten rock underground |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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| where is rock melted? |
the asthenosphere and at plate boundaries |
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chunsah Wed, 07 May 2008 03:13:37 GMT |
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