Volcanoes

Front

Which types of magma contains the least amount of SiO₂? Options: rhyolitic, andesitic, felsic, basaltic

Back

basaltic

Front

Rhyolitic magma is rich in _____. Options: silica, iron, magnesium, sulfur

Back

silica

Front

Which of the following is not a factor that can affect magma composition? Options: lacosity, mineral content, silica, water content

Back

lacosity

Front

The composition of magma determines its _____. Options: viscosity, darkness, color, none of the above

Back

viscosity

Front

Which of the following gases is not typically found in volcanic activity? Options: water vapor, sulfur, carbon dioxide, argon

Back

argon

Front

Volcanoes that are made of basalt lava flows are called _____ (Options: shield volcanoes, composite volcanoes, stratovolcanoes, cone volcanoes).

Back

shield volcanoes

Front

Volcanoes are common along which types of plate boundaries?

Back

Convergent and divergent plate boundaries

Front

Where are about 75 percent of the world’s volcanoes found? Options: around the Atlantic Ocean basin, along the mid-Atlantic ridge, around the Pacific Ocean basin, throughout the American Northwest.

Back

around the Pacific Ocean basin.

Front

A line of volcanic activity that surrounds the Pacific Ocean basin is the: Ring of Fire, Aleutian Islands, Hawaiian Islands, Caribbean Islands

Back

Ring of Fire

Front

Which of these volcanic particulates is the largest in size? Options: Block, Ash, Bomb, Lapilli

Back

Block