Rocks and Minerals

Rocks are classified into three major groups:

• magma, metamorphic, and minerals

• igneous, metamorphic, and sedimentary

• sedimentary, sand, and igneous

• sand, mud, and silt

Rocks that form when magma or lava cools and hardens are

• igneous rocks

• sedimentary rocks

• metamorphic rocks

Rocks that form in layers when sediments are pressed together, often containing fossils, are

• igneous rocks

• sedimentary rocks

• metamorphic rocks

Tags

NGSS.MS-ESS2-3

Rocks that are changed by heat and pressure are

• igneous rocks

• seimentary rocks

• metamorphic rocks

Which of the following help us identify minerals?

• principals of minerals

• properties of minerals

• plans of minerals

• purposes of minerals

Which of the following is NOT a mineral property?

• size

• streak color

• luster

• hardness

Which mineral property tells the true color of the mineral by leaving behind a streak of powder when rubbed on a plate?

• streak color

• luster

• hardness

• cleavage

Which mineral property describes how a mineral breaks?

• streak color

• luster

• hardness

• cleavage

Which mineral property describes the mineral's resistance to being scratched?

• streak color

• luster

• hardness

• cleavage

Which mineral property describes how the mineral reflects light?

• streak color

• luster

• hardness

• cleavage