Chapter 5 Igneous Rocks

These rocks form when lava or magma cools and crystallizes.

• sedimentary

• igneous

• metamorphic

• basaltic

Magma is often a slushy mix of crystals and molten rock by a process whereby some minerals melt at relatively low temperature while others remain solid. This process is known as.....

• partial melting

• fractional crystallization

• Bowen's reaction series

• crystal settling

Sedimentary rocks are made of sediments that are formed from weathering and erosion under heat and/or pressure.

• True

• False

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

Magma that flows out onto Earth's surface.

• lava

• magma

• minerals

• rock

Basaltic glass is an extrusive rock that is glassy, has on crystals and can be non-vesicular or vesicular.

• True

• Falso

Tags

NGSS.MS-PS1-1

Which mineral is high in iron and magnesium?

• Biotite

• Pyroxene

• Olivine

• Potassium Feldspar

Refers to the size, shape, and distribution of the crystals or grains that make up a rock.

• grain

• crystal

• glassy

• texture

Which mineral is lighter in color?

• potassium feldspar

• quartz

• plagioclase feldspar

• pyroxene

What mineral is NOT formed at 75% composition?

• Potassium feldspar

• Biotite

• Pyroxene

• Olivine

Tags

NGSS.MS-PS1-1

Magma that cools and crystallizes below Earth's surface are known as....

• basaltic rocks

• extrusive rocks

• intrusive rocks

• granitic rocks