Exploring Volcanoes

What is a volcano?

• A volcano is a type of cloud formation

• A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.

• A volcano is a man-made structure used for water storage

• A volcano is a type of dessert made with ice cream and cookies

What are the signs of a volcanic eruption?

• Unchanged volcanic crater shape, no gas emissions, no ground deformation

• Decreased seismic activity, increased ground deformation, gas emissions

• Increased seismic activity, ground deformation, gas emissions, changes in volcanic crater shape

• Decreased seismic activity, stable ground deformation, no gas emissions

What are the effects of volcanic eruptions?

• The effects of volcanic eruptions include ash clouds, lava flows, pyroclastic flows, lahars, volcanic gases, and volcanic earthquakes.

• Volcanic eruptions are beneficial for agriculture

• Volcanic eruptions only release water vapor into the atmosphere

• Volcanic eruptions have no impact on the environment

Name one type of volcanic hazard.

• Volcanic lightning

• Lava lamp

• Pyroclastic flow

• Magma cake

How are volcanic eruptions classified?

• Based on explosivity, eruption style, and volcanic explosivity index (VEI)

• Based on color, temperature, and location

• By the number of rocks ejected, the duration, and the noise level

• According to the moon phase, wind direction, and cloud cover

What is the Ring of Fire?

• The Ring of Fire is a jewelry accessory worn by celebrities.

• The Ring of Fire is a fictional superhero character in a comic book.

• The Ring of Fire is a popular amusement park ride.

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

Explain the difference between lava and magma.

• Lava flows on the surface, magma is beneath the surface.

• Lava is solid, magma is liquid

• Lava is found underground, magma is found on the surface

• Lava is cold, magma is hot

What is pyroclastic flow?

• A pyroclastic flow is a fast-moving current of hot gas and volcanic matter that flows down the side of a volcano during an eruption.

• A pyroclastic flow is a type of cloud formation caused by volcanic eruptions.

• A pyroclastic flow is a slow-moving stream of water that flows from a volcano.

• A pyroclastic flow is a term used to describe the movement of tectonic plates.

How do volcanoes form?

• Volcanoes are formed by meteor impacts on the Earth's surface.

• Volcanoes form due to excessive rainfall eroding the Earth's crust.

• Magma from within the Earth's mantle rises to the surface and erupts through a vent in the Earth's crust.

• Volcanoes are created by underground nuclear explosions.

What are some safety measures during a volcanic eruption?

• Swim in rivers

• Ignore evacuation orders

• Follow evacuation orders, stay indoors, wear masks, cover skin, stay away from rivers and low-lying areas

• Stay outdoors without protection