Answer all questions below and test your knowledge.
Question 1 of 10
Which volcanic landform is formed by the accumulation of lava flows around a central vent?
Question 2 of 10
Complete the statement: "The term 'pumice' refers to"
Question 3 of 10
A volcano erupts explosively, sending ash 30 km into the stratosphere, and the eruption is classified as VEI 5. Which factor most directly controls the eruption magnitude?
Question 4 of 10
Which volcanic feature is typically associated with a hotspot rather than a plate boundary?
Question 5 of 10
What is the primary gas emitted during a volcanic eruption that contributes to acid rain?
Question 6 of 10
Complete the statement: "A volcanic eruption that produces only lava without explosive ash is termed"
Question 7 of 10
A basaltic lava flow travels 50 km before solidifying. Which factor most likely allowed such a long distance?
Question 8 of 10
Which eruption style is characterized by continuous low‑intensity lava effusion and frequent small explosions?
Question 9 of 10
Which of the following best describes a caldera?
Question 10 of 10
What is the name of the layer of the Earth where most volcanic activity occurs?