Myview 5.2 Volcanoes

What is a volcano?

• A volcano is a mountain that opens downward to a reservoir of molten rock below the surface of the Earth.

• A volcano is a type of cloud formation

• A volcano is a type of tree found in tropical regions

• A volcano is a type of fish that lives in the ocean

Name the three types of volcanoes.

• explosive volcanoes

• cone volcanoes

• shield volcanoes, stratovolcanoes, cinder cone volcanoes

• dome volcanoes

How are composite volcanoes formed?

• Composite volcanoes are formed by the impact of meteorites on the Earth's surface.

• Composite volcanoes are formed by the cooling of underground magma chambers.

• Layers of ash, lava, and volcanic rocks build up over time, creating a steep-sided cone-shaped structure.

• Composite volcanoes are formed by the erosion of sedimentary rocks.

Explain the difference between explosive and non-explosive eruptions.

• Explosive eruptions occur underwater, while non-explosive eruptions only happen on land.

• Explosive eruptions involve violent explosions and pyroclastic material, while non-explosive eruptions have a steady flow of lava.

• Explosive eruptions involve slow-moving lava, while non-explosive eruptions have rapid explosions.

• Explosive eruptions are characterized by a lack of volcanic ash, while non-explosive eruptions produce significant ash clouds.

What is the Ring of Fire?

• The Ring of Fire is a popular dance move

• The Ring of Fire is a jewelry store chain

• The Ring of Fire is a region around the Pacific Ocean known for its seismic and volcanic activity.

• The Ring of Fire is a type of spicy food dish

Describe the process of volcanic eruption.

• Volcanic eruption is caused by excessive rainfall

• The process of volcanic eruption involves the rise of magma to the surface due to pressure build-up, leading to the release of gases, ash, and lava.

• Volcanic eruption occurs due to the cooling of magma

• Volcanic eruption involves the release of chocolate instead of lava

What are the main components of volcanic ash?

• Fine rock, mineral, and glass particles

• Organic matter

• Metallic fragments

• Coarse sand

How do scientists monitor volcanic activity?

• Using weather balloons

• Observing cloud formations

• Listening for bird calls

• Using tools like seismometers, gas analyzers, satellite imagery, and thermal cameras.

What are the potential hazards associated with volcanic eruptions?

• Lava flows, ashfall, pyroclastic flows, lahars, volcanic gases, volcanic tsunamis

• Volcanic lightning, volcanic hail, volcanic earthquakes

Discuss the impact of volcanic eruptions on the environment.

• Volcanic eruptions have no impact on the environment

• Volcanic eruptions lead to increased biodiversity

• Volcanic eruptions improve air quality

• The impact of volcanic eruptions on the environment includes releasing harmful gases, disrupting ecosystems, destroying vegetation, affecting air quality, and damaging infrastructure.