Volcanoes Quiz

The formation of the Hawaiian Islands is one example of --

• volcanic activity forming over a hot spot.

• volcanoes forming along plate boundaries.

• the Ring of Fire.

• continental drift.

The viscosity of magma depends upon its silica content and its

• pahoehoe.

• temperature.

• magnetism.

• pyroclastic flow.

Tags

NGSS.HS-ESS2-3

The long tube in the ground that connects the magma chamber to Earth’s surface is called the

• vent.

• side vent.

• pipe/conduit.

• crater.

If a volcano’s magma is high in silica, the volcano will probably

• erupt quietly.

• remain dormant.

• produce bright-colored lava.

• erupt explosively.

Pahoehoe is

• cooler, slower-moving lava.

• fast-moving, hot lava.

• volcanic ash.

• lava with a rough, chunky surface.

When groundwater heated by magma rises to the surface and forms a fountain of water, it's called a

• hot spring.

• geyser.

• vent.

• pyroclastic flow.

In volcanic areas, groundwater heated by magma is a source of

• lava flows.

• silica.

• geothermal energy.

• pyroclastic flows.

The main hazard from a quiet volcanic eruption is

• volcanic gases.

• lava flows.

• geysers.

• pyroclastic flows.

The major ingredients of magma are

• pahoehoe.

• silica.

• dissolved gases.

• obsidian.

What triggers the small earthquakes that occur around a volcano before an eruption?

• upward movement of magma

• pyroclastic flow

• cooling magma inside the crust

• plate movements