1.
What is the most common gas emitted during volcanic eruptions?
A
Oxygen ()
B
Nitrogen ()
C
Carbon dioxide ()
D
Hydrogen ()
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What is the most common gas emitted during volcanic eruptions?
Oxygen ()
Nitrogen ()
Carbon dioxide ()
Hydrogen ()
How does volcanic activity contribute to the Earth's atmosphere?
By releasing greenhouse gases
By depleting the ozone layer
By increasing air pollution
By releasing sulfur dioxide, which can lead to acid rain and global cooling
What is a volcanic fissure?
A type of volcanic gas
A tube-shaped volcanic vent
A long crack in the Earth's surface from which lava erupts
A type of lava flow
What is a volcanic plume?
A type of volcanic gas
A column of hot volcanic ash and gas rising above a volcano
A type of lava flow
A fissure in the Earth's crust from which lava erupts
What is a volcanic avalanche?
A type of volcanic gas
A rapid flow of hot volcanic gases and ash down the slopes of a volcano
A large landslide of volcanic debris and rock
A type of lava flow
What is a lava tube?
A tube-shaped volcanic vent
A type of volcanic bomb
A type of volcanic gas
A tunnel formed by the flow of lava
What is a volcanic bomb?
A large boulder ejected during a volcanic eruption
A fast-moving mudflow composed of volcanic ash and water
A cloud of volcanic ash and gas that flows rapidly down the side of a volcano
A type of lava flow
What is a volcanic vent?
A type of volcanic gas
A depression at the top of a volcano formed by eruptions
A fissure in the Earth's crust from which lava erupts
A type of lava flow
Which of the following is a shield volcano?
Mount St. Helens in the United States
Mount Vesuvius in Italy
Mauna Loa in Hawaii
Krakatoa in Indonesia
What is a volcanic tremor?
A type of volcanic gas
A low-frequency seismic event associated with volcanic activity
A type of lava flow
A type of volcanic bomb
What is a volcanic hotspot?
A location where volcanic activity is concentrated along tectonic plate boundaries
A region where two tectonic plates are moving apart
A region where magma rises from deep within the mantle, creating a chain of volcanic islands
A type of lava flow that moves slowly down the slopes of a volcano
How does the viscosity of magma affect the type of eruption?
Magma with high viscosity tends to produce explosive eruptions
Magma with low viscosity tends to produce explosive eruptions
Viscosity has no effect on the type of eruption
Magma with high viscosity tends to produce quiet eruptions
Which of the following is a supervolcano?
Mount Vesuvius in Italy
Mount St. Helens in the United States
Yellowstone Caldera in the United States
Mount Etna in Italy
What is a volcanic crater?
A depression at the top of a volcano formed by eruptions
A type of lava flow
A type of volcanic gas
A fissure in the Earth's crust from which lava erupts
How does volcanic activity contribute to the formation of new land?
By eroding existing landforms
By depositing volcanic ash and lava, which solidifies into new landmasses
By causing earthquakes that push up new land
By melting existing landforms
What is the Ring of Fire?
A popular roller coaster ride
A circle of volcanoes and earthquake zones surrounding the Pacific Ocean
A type of volcanic eruption
A volcanic island chain in the South Pacific
Which of the following is NOT a primary gas emitted during a volcanic eruption?
Carbon dioxide ()
Oxygen ()
Sulfur dioxide ()
Hydrogen sulfide ()
What is volcanic ash?
Large boulders ejected during a volcanic eruption
Small, glassy fragments of volcanic rock that are ejected into the air during an eruption
A type of lava with a high viscosity
Molten rock that flows down the slopes of a volcano
What is lahar?
A type of lava with a high viscosity
A type of volcanic bomb
A fast-moving mudflow composed of volcanic ash and water
A type of volcanic gas
What is a pyroclastic flow?
A flow of molten lava down the slopes of a volcano
A cloud of volcanic ash and gas that flows rapidly down the side of a volcano
A type of volcanic rock
A fissure in the Earth's crust from which lava erupts