09 Volcanic Eruptions Bank

What are two kinds of volcanic eruptions?

• Effusive and Explosive

• Mafic and Felsic

• Active and Dormant

• Composite and Shield

How does the composition of magma affect eruptions?

• It determines the viscosity and gas content, influencing eruption style and intensity.

• It has no significant effect on eruptions.

• It only affects the color of the lava, not the eruption itself.

• It changes the temperature of the magma, but not the eruption characteristics.

What are two ways that magma can erupt from a volcano?

• Through explosive eruptions and lava flows

• By solidifying underground and forming igneous rocks

• Through sedimentation and metamorphism

• By cooling rapidly in the air and forming volcanic glass

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NGSS.MS-ESS2-1

NGSS.MS-ESS3-2

Define: What is a magma chamber?

• A large pool of liquid rock beneath the surface of the Earth.

• A chamber used for scientific experiments.

• A storage area for volcanic ash.

• A type of igneous rock.

Describe: What makes volcanoes grow larger?

• Eruption of lava and ash

• Erosion by wind and water

• Movement of tectonic plates

• Decrease in sea level

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NGSS.MS-ESS3-2

How are nonexplosive eruptions different from explosive eruptions?

• Nonexplosive eruptions produce lava flows, while explosive eruptions produce ash clouds.

• Nonexplosive eruptions are louder than explosive eruptions.

• Explosive eruptions are cooler in temperature than nonexplosive eruptions.

• Nonexplosive eruptions and explosive eruptions are not different.

Identify What is the main factor that determines how a volcano erupts?

• The age of the volcano

• The temperature of the lava

• The composition of the magma

• The height of the volcano

How can magma that contains a lot of silica cause an explosive eruption?

• By increasing the viscosity of the magma, trapping gases

• By decreasing the temperature of the magma

• By increasing the magma's density

• By reducing the silica content in the magma

Tags

NGSS.MS-ESS3-2

Define: What is pyroclastic material?

• Molten rock expelled by a volcano during an eruption

• Solidified lava found on the surface of the moon

• A type of sedimentary rock formed under the sea

• The material consisting of fragments of rock erupted by a volcano

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NGSS.MS-ESS3-2

Compare: How are aa and blocky lava similar?

• Both have a smooth texture

• Both are types of basaltic lava characterized by rough surfaces

• Both are found only underwater

• Both flow at extremely high temperatures compared to other lava types