Volcanoes and igneous rocks

Front

Volcanic belts form along

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the boundaries of Earth's plates

Front

The formation of the Hawaiian Islands is one example of

Back

volcanoes forming over a hot spot

Front

If a volcano's magma is high in silicia, the volcano will probably

Back

erupt explosively

Front

What type of volcano is built almost entirely from ejected lava fragments? Options: cinder cone, composite cone, shield volcano, pahoehoe volcano

Back

cinder cone

Front

The particles produced in volcanic eruptions are called ____.

Back

pyroclastic material

Front

Highly explosive volcanoes tend to have what type of magma? Options: magma with high silica, high viscosity, and higher gas content, magma with low silica, low viscosity, and lower gas content, magma with low silica, high viscosity, and lower gas content, magma with no silica, high viscosity, and no gas content

Back

magma with high silica, high viscosity, and higher gas content

Front

A lava flow with a surface of rough, jagged blocks and sharp, angular projections is called a(n) ____.

Back

aa flow

Front

Which factors help determine whether a volcanic eruption will be violent or relatively quiet? (Options: amt of dissolved gases, temp of magma, composition of magma, all of the above)

Back

all of the above

Front

Which of these volcanic particulates is the smallest in size? Block, Ash, Bomb, Lapilli

Back

Ash

Front

A line of volcanic activity that surrounds the Pacific Ocean basin is the

Back

Ring of Fire