61.
Which of the following is a shield volcano?
A
Mount St. Helens in the United States
B
Mount Vesuvius in Italy
C
Mauna Loa in Hawaii
D
Krakatoa in Indonesia
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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
Which of the following is NOT a type of volcanic hazard?
Lava flows
Pyroclastic flows
Tsunamis
Earthquakes
What is the primary factor that determines the explosiveness of a volcanic eruption?
The temperature of the magma
The size of the volcano
The presence of water and gas in the magma
The depth of the magma chamber
Which type of volcano has the steepest slopes and is made up of alternating layers of lava and volcanic ash?
Shield volcano
Cinder cone volcano
Stratovolcano
Fissure volcano
What is magma?
Molten rock beneath the Earth's surface
Solid rock on the Earth's surface
Another name for lava
Gas emitted during a volcanic eruption
What is a volcano?
A deep pit in the ground
A mountain formed by the accumulation of volcanic ash and lava
A type of earthquake
A river of flowing lava
Who discovered the solar system ?
Copernicus
Kepler
Aryabhatta
Newton
Which planet was named after the Roman God Zeus ?
Mars
Earth
Venus
Jupiter
Which planet in our solar system is nearly as big as th earth ?
Mercury
Mars
Venus
Pluto