What is a common feature of all volcanoes?

• A large crater

• A vent in the Earth's crust

• A tall mountain

• A lava flow

Which type of volcano is shaped like a cone with a narrow top and wide bottom?

• Caldera

• Fissure volcano

• Shield volcano

• Stratovolcano

What is the largest active volcano on Earth?

• Mount Fuji

• Mount Vesuvius

• Eyjafjallajökull

• Mauna Loa

What does it mean if a volcano is classified as dormant?

• It erupts continuously

• It is unlikely to erupt again

• It has not erupted for a long time but might erupt again

• It has erupted recently and may erupt again soon

Which volcano's eruption in 2010 caused a significant ash cloud that disrupted flights?

• Kilauea

• Mount Tambora

• Mount Vesuvius

• Eyjafjallajökull

What is the Volcanic Explosivity Index (VEI) used for?

• Assessing the explosiveness of an eruption

• Measuring the height of a volcano

• Determining the temperature of lava

• Calculating the age of a volcano

What was the VEI rating of the largest eruption in recorded history?

• 5

• 6

• 7

• 8

How can scientists predict when a volcano might erupt?

• By observing the color of lava

• By counting the number of eruptions

• By measuring the height of the volcano

• By tracking changes in earthquakes and heat

What benefit does volcanic ash provide to the environment?

• It cools the Earth's temperature

• It prevents earthquakes

• It enriches soil with nutrients

• It creates new water sources

What happens when lava cools and hardens?

• It turns into magma

• It causes earthquakes

• It creates new land and mountains

• It forms new water bodies