Volcano Formation and Eruption Quiz

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How is a volcano formed?

By the cooling and hardening of lava on the Earth's surface

By the accumulation of rainwater in deep underground reservoirs

By the release of gases and materials through a vent in the Earth's crust (correct)

By the evaporation of ocean water due to intense heat from the Sun

What causes an eruption in a volcano?

Rapid growth of volcanic mountains

Building pressure under the Earth's crust (correct)

Cooling of magma within the Earth

Movement of molten lava on the surface

What forms a volcanic pipe that allows magma to escape?

Solidification of lava on the Earth's surface

Pressure buildup in the mantle layer (correct)

Accumulation of rainwater near the volcano

Cooling of gases within the volcano

What characterizes a volcanic mountain?

Formation over a magma chamber with accumulated rock fragments Signup and view all the answers

What is the main cause of volcanic eruptions?

Friction between tectonic plates Signup and view all the answers

Why does magma move towards the surface during a volcanic eruption?

Pressure from the mantle layer pushing it upward Signup and view all the answers

Which statement best explains how ash forms during a volcanic eruption?

Cooling and hardening of liquid magma into small particles Signup and view all the answers

What is the name given to the depression that forms on top of a volcano after an eruption?

Caldera Signup and view all the answers

Which of the following is a volcanic landform that results from thick, viscous lava that does not flow easily?

Lava dome Signup and view all the answers

What type of volcanic eruption results from a crack or fissure in the Earth's crust, without a volcanic pipe or vent?

Fissure eruption Signup and view all the answers

Which of the following is a type of volcano that forms from a build-up of gas and erupts forcefully?

Maar-diatreme Signup and view all the answers

What is the name given to a wide, flat area of cooled lava that results from a volcanic eruption?

Lava plateau Signup and view all the answers

Which of the following is a type of volcano that forms from forceful eruptions of ash and cinders, resulting in a cone shape with a crater in the center?

Cinder cone Signup and view all the answers

What type of volcano is characterized by thin, runny lava that travels far from the original eruption site?

Shield volcano Signup and view all the answers

Which of the following is a type of volcano that is typically large, with steep sides and layers of hardened lava, rock, and ash?

Composite volcano Signup and view all the answers