Rocks and Minerals Practice

A rock is made of 2 or more minerals, something found in nature, and something that can be broken with a hammer or chisel.

Sedimentary rocks form by the pressure of layers of sediment.

The streak of a mineral is the color of its powdered form.

Talc is the softest mineral, rated 1 on the Mohs scale.

Igneous rock is formed from cooled magma.

A mineral is a naturally occurring, inorganic solid with a definite chemical composition and crystalline structure.

The Mohs scale is a scale that ranks minerals based on their hardness from 1 (softest) to 10 (hardest).

Metamorphic rock is formed under heat and pressure.

Luster is the way a mineral reflects light, which can be metallic, glassy, or dull.

Igneous rocks form from cooled magma, while sedimentary rocks form from the accumulation of sediment.