Rocks and Minerals

Rocks are classified into three major groups:

Rocks that form when magma or lava cools and hardens are

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

Rocks that are changed by heat and pressure are

What helps us identify minerals?

Which of the following is NOT a mineral property? Options: 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? Options: streak color, luster, hardness, cleavage

Which mineral property describes how a mineral breaks?

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

Which mineral property describes how the mineral reflects light?