Volcanoes Lesson review

What happens at divergent and convergent plate boundaries?

• Crust and mantle melt into magma

• Earthquakes shake magma loose

• Magma champers collapse into caldera

• Sediment deposits become volcanic ash

Volcanic ash is produced during

• explosive eruptions

• lava flows

• liquefaction

• subduction

What is magma

• Magnetic force under the ground

• Type of tectonic plates

• Hot, molten rocks

• Lava

What is geyser

• Lava flows

• Magma chamber

• Caldera in the center of volcano

• Jet of stream of hot and steamed water formed at hot spots

The factor that helps magma to form in mantle at convergent boundary is

• Shear force

• Water carried from sink oceanic plate

• Low pressure surface in the rift

The type of volcanoes that has violent and explosive eruptions is

• Shield volcano

• Caldera

• Composite volcano

• Primary Waves

Composite volcano has viscous (sticky) lava, because

• magma will mix with part of continental crust while it erupts.

• magma become cold while it erupts.

• magma flow onto Earth's surface smoothly

As lava flow through the rift, cools and solidifies this will form

• island

• mid-ocean ridge

• hot spring

Volcanic eruptions can block the sunlight

• True

• False

Mouna Loa volcano formed at

• Divergent boundary

• Convergent boundary

• Transform boundary