Podcast
Questions and Answers
How is a volcano formed?
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?
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?
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?
What characterizes a volcanic mountain?
What is the main cause of volcanic eruptions?
What is the main cause of volcanic eruptions?
Why does magma move towards the surface during a volcanic eruption?
Why does magma move towards the surface during a volcanic eruption?
Which statement best explains how ash forms during a volcanic eruption?
Which statement best explains how ash forms during a volcanic eruption?
What is the name given to the depression that forms on top of a volcano after an eruption?
What is the name given to the depression that forms on top of a volcano after an eruption?
Which of the following is a volcanic landform that results from thick, viscous lava that does not flow easily?
Which of the following is a volcanic landform that results from thick, viscous lava that does not flow easily?
What type of volcanic eruption results from a crack or fissure in the Earth's crust, without a volcanic pipe or vent?
What type of volcanic eruption results from a crack or fissure in the Earth's crust, without a volcanic pipe or vent?
Which of the following is a type of volcano that forms from a build-up of gas and erupts forcefully?
Which of the following is a type of volcano that forms from a build-up of gas and erupts forcefully?
What is the name given to a wide, flat area of cooled lava that results from a volcanic eruption?
What is the name given to a wide, flat area of cooled lava that results from a volcanic eruption?
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?
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?
What type of volcano is characterized by thin, runny lava that travels far from the original eruption site?
What type of volcano is characterized by thin, runny lava that travels far from the original eruption site?
Which of the following is a type of volcano that is typically large, with steep sides and layers of hardened lava, rock, and ash?
Which of the following is a type of volcano that is typically large, with steep sides and layers of hardened lava, rock, and ash?
