VOLCANICITY QUESTIONS AND ANSWERS
FOR A STUDENTS
What is volcanicity?
Volcanicity refers to the processes and phenomena associated with
the movement of molten rock, gases, and other materials from
beneath the Earth's crust to the surface.
Which of the following is a major cause of volcanicity?
A) Earth's rotation
B) Movement of tectonic plates
C) The Moon’s gravitational pull
D) Solar radiation
Movement of tectonic plates
Which type of volcano is characterized by explosive eruptions and
steep slopes?
A) Shield volcano
B) Composite volcano
C) Cinder cone volcano
D) Lava dome
Composite volcano
Which of these is NOT a product of volcanic eruptions?
A) Magma
,B) Lava
C) Ash
D) Pyroclastic flows
Magma
Which gas is most commonly released during a volcanic eruption?
A) Oxygen
B) Carbon dioxide
C) Water vapor
D) Nitrogen
Water vapor
Which of the following best describes a dormant volcano?
A) A volcano that has never erupted and will never erupt
B) A volcano that is actively erupting
C) A volcano that has not erupted in a long time but may erupt again
D) A volcano that has completely collapsed
A volcano that has not erupted in a long time but may erupt again
What is a caldera?
A) A type of volcanic rock
B) A small volcanic cone
C) A large depression formed after a volcanic eruption
D) A gas vent in a volcano
A large depression formed after a volcanic eruption
, Which of these is an example of an intrusive volcanic feature?
A) Lava flow
B) Batholith
C) Ash cloud
D) Pyroclastic surge
Batholith
Which factor influences the explosiveness of a volcanic eruption?
A) The speed of tectonic plate movement
B) The amount of silica in the magma
C) The presence of a crater lake
D) The altitude of the volcano
The amount of silica in the magma
Which of the following is a potential benefit of volcanic activity?
A) Destruction of forests
B) Formation of fertile soils
C) Increase in atmospheric pollution
D) Melting of glaciers
Formation of fertile soils
What is the main difference between magma and lava?
A) Magma is solid while lava is liquid
B) Magma is found underground while lava is found on the surface
C) Magma contains more gas than lava
FOR A STUDENTS
What is volcanicity?
Volcanicity refers to the processes and phenomena associated with
the movement of molten rock, gases, and other materials from
beneath the Earth's crust to the surface.
Which of the following is a major cause of volcanicity?
A) Earth's rotation
B) Movement of tectonic plates
C) The Moon’s gravitational pull
D) Solar radiation
Movement of tectonic plates
Which type of volcano is characterized by explosive eruptions and
steep slopes?
A) Shield volcano
B) Composite volcano
C) Cinder cone volcano
D) Lava dome
Composite volcano
Which of these is NOT a product of volcanic eruptions?
A) Magma
,B) Lava
C) Ash
D) Pyroclastic flows
Magma
Which gas is most commonly released during a volcanic eruption?
A) Oxygen
B) Carbon dioxide
C) Water vapor
D) Nitrogen
Water vapor
Which of the following best describes a dormant volcano?
A) A volcano that has never erupted and will never erupt
B) A volcano that is actively erupting
C) A volcano that has not erupted in a long time but may erupt again
D) A volcano that has completely collapsed
A volcano that has not erupted in a long time but may erupt again
What is a caldera?
A) A type of volcanic rock
B) A small volcanic cone
C) A large depression formed after a volcanic eruption
D) A gas vent in a volcano
A large depression formed after a volcanic eruption
, Which of these is an example of an intrusive volcanic feature?
A) Lava flow
B) Batholith
C) Ash cloud
D) Pyroclastic surge
Batholith
Which factor influences the explosiveness of a volcanic eruption?
A) The speed of tectonic plate movement
B) The amount of silica in the magma
C) The presence of a crater lake
D) The altitude of the volcano
The amount of silica in the magma
Which of the following is a potential benefit of volcanic activity?
A) Destruction of forests
B) Formation of fertile soils
C) Increase in atmospheric pollution
D) Melting of glaciers
Formation of fertile soils
What is the main difference between magma and lava?
A) Magma is solid while lava is liquid
B) Magma is found underground while lava is found on the surface
C) Magma contains more gas than lava
