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| Who is your favorite teacher? |
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| What is your teacher's favorite beverage? |
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| a weak spot in the crust where magma comes through to the surface |
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| where plates pull apart; crust will often fracture and allow magma to reach the surface |
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the plates push together; the crust often fractures, allowing magma to reach the surface.
Subduction occurs here |
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is an area where material forms deep within the mantle, it rises and then melts, forming magma.
________ occur in the middle of plates far from plate boundaries. |
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is a substance that cannot be broken down into other substances
(examples: carbon, oxygen, hydrogen) |
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a substance made of two or more elements that have been chemically combined
(examples: water, table salt) |
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is the resistance of a liquid to flow
(remember your dance moves) |
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| the major ingredient in magma; more silica, greater the viscosity |
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| a pocket beneath the volcano that collects magma |
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| a long tube in the ground that connects the magma chamber to the Earth's surface. Magma moves upward through this |
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| an opening in the volcano where lava leaves the volcano |
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| is the area covered by lava as it pours out of the vent |
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| an eruption is quiet if the magma is low in silica because it has a low viscosity |
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a volcano erupts explosively if its magma is high in silica; the silica has high viscosity.
breaks lava into pieces: ash, cinders, and bombs |
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| a mixture of hot gases, ash, cinders, and bombs |
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| What are the three life cycles used to describe volcanoes? |
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Definition
Dormant--expected to awake in the future
Extinct--dead volcano, not likely to erupt
active--is erupting or shows signs that it may erupt in the near future |
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| lava that built a wide, gently sloping mountain |
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| a steep, cone-shaped hill or small mountain made of volcanic ash, cinders, and bombs piled up around a volcano's opening |
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| a tall, cone-shaped mountain in which layers of lava alternate with layers of ash and other volcanic materials |
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| is any property that produces a change in the composition of matter. (examples: burning material, silver jewerly darkening) |
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| when magma reaches the surface |
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| What are the two types of lava |
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Pahoehoe--hot, fast moving, low viscosity
aa--cooler, slower-moving |
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| occurs when magma hardens in the pipe of the volcano; it looks like a giant stuck tooth |
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| a huge hole that is left behind when a volcano collapses |
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| is a mass of rock formed when a large body of magma cools inside the crust |
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| is a slab of volcanic rock formed when magma forces itself across rock layers. |
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| Who has the best dance moves? |
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Definition
| Mrs. Cuba, of course, I just wanted to see if you were paying attention. |
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