Rocks and Minerals Practice

Front

What is a rock?

Back

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

Front

How do sedimentary rocks form?

Back

Sedimentary rocks form by the pressure of layers of sediment.

Front

What is the streak of a mineral?

Back

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

Front

Which mineral is the softest?

Back

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

Front

What type of rock is formed from cooled magma?

Back

Igneous rock is formed from cooled magma.

Front

What is a mineral?

Back

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

Front

What is the Mohs scale?

Back

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

Front

What type of rock is formed under heat and pressure?

Back

Metamorphic rock is formed under heat and pressure.

Front

What is luster in minerals?

Back

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

Front

What is the difference between igneous and sedimentary rocks?

Back

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