Volcanoes

Question 1

Which statement describes convergent boundaries?

Revolt · Accepted Answer

Subduction occurs.

Question 2

Which event causes a volcanic eruption?

Revolt · Accepted Answer

explosions occurring in magma chambers

Question 3

Which phrase describes a sill?

Revolt · Accepted Answer

is a hardened magma intrusion

Question 4

The image shows Osorno in Chile, which last erupted in 1869.

Revolt · Accepted Answer

dormant volcano

Question 5

Which feature forms at a divergent boundary?

Revolt · Accepted Answer

rift valley

Question 6

Which statement explains what happens as magma rises inside a volcano?

Revolt · Accepted Answer

The magmatic pressure decreases.

Question 7

A volcano erupts, and lava flows down a mountainside. Which statement best describes this eruption?

Revolt · Accepted Answer

This is a quiet eruption caused by low-viscosity magma.

Question 8

A volcano erupts, and lava flows down a mountainside. Which statement best describes this eruption?

Question 9

Which phrase describes a lava plateau?

Question 10

Which statement explains what happens as magma rises inside a volcano?

Volcanoes Answers