1.6 - Extrusive Volcanic Features

Extrusive volcanic features are formed:

Molten rock at the Earth’s surface is called:

A broad volcano with gentle slopes is best described as a:

Lava plateaux and shield volcanoes are most closely associated with:

A large depression formed when the ground collapses after a major eruption is called a:

High-viscosity lava is best described as:

Volcanic cones, calderas, and viscous lava are most closely associated with:

A Caribbean island eruption produces runny lava that travels several kilometers in thin sheets and builds a wide, low volcano. Which landform is most likely forming?

A large depression formed due to collapse is called a:

Which statement best explains why sticky lava can produce more explosive eruptions?

A hazard map shows valleys radiating away from a steep cone. Why might planners avoid building shelters in those valleys?

A student confuses boundary types. Which pairing is correct?

Which lava type is most likely to build a steep-sided volcanic cone in the Caribbean island arc setting?

Which sequence best describes the link between plate boundary type and landform for many extrusive features?

A volcano produces a large collapse depression after a major eruption. Which evidence supports that it is a caldera rather than a small crater?

Two islands are compared. Island A has broad lava fields and gentle slopes; Island B has steep cones and thick lava domes. Which conclusion is most reasonable?

Which set of statements is correct? 1. Extrusive features form at the surface. 2. Shield volcanoes are commonly linked to low-viscosity lava. 3. Calderas can form by collapse after major eruptions. 4. Lava plateaux are mainly linked to convergent boundaries.

A community emergency plan in an Eastern Caribbean island includes ash masks and roof-strength checks. Which volcanic setting makes these measures most logical?

A student says, “Shield volcanoes are steep because lava piles up.” Which option best corrects this using viscosity?

A planning team must choose a site for a water-treatment plant near an active volcanic cone. Which site choice best reduces risk using landform and eruption-style ideas?