Understanding Igneous Rocks Quiz

What is the term for magma that flows out onto Earth’s surface?

• Intrusive rock

• Lava

• Basaltic rock

• Granitic rock

Which type of igneous rock is formed when molten rock cools slowly and solidifies inside Earth’s crust?

• Extrusive rock

• Basaltic rock

• Intrusive rock

• Granitic rock

What is the process called in which different minerals melt into magma at different temperatures, changing its composition?

• Fractional crystallization

• Partial melting

• Bowen’s reaction series

• Lava flow

Which type of rock is dark colored, has lower silica contents, and is rich in iron and magnesium?

• Granitic rock

• Basaltic rock

• Intrusive rock

• Extrusive rock

What is the name of the process in which different minerals crystallize from magma at different temperatures, removing elements from magma?

• Partial melting

• Fractional crystallization

• Bowen’s reaction series

• Lava solidification

Which type of igneous rock is formed when molten rock cools quickly and solidifies on Earth’s surface?

• Intrusive rock

• Granitic rock

• Extrusive rock

• Basaltic rock

What is Bowen’s reaction series?

• A process of magma solidification

• A pattern in which minerals crystallize from cooling magma

• A type of intrusive rock

• A type of extrusive rock

Which type of rock is light colored and typically intrusive?

• Basaltic rock

• Extrusive rock

• Granitic rock

• Lava

What is the primary difference between intrusive and extrusive rocks?

• Color

• Cooling location

• Mineral content

• Silica content

Which process involves the sequential, predictable pattern of mineral crystallization from cooling magma?

• Partial melting

• Fractional crystallization

• Bowen’s reaction series

• Lava flow