Color of a mineral when it is in powdered form

Measure of how easily a mineral can be scratched

How minerals or crystals break along clean lines

A non-living material found naturally on earth, with definite chemical composition and a crystalline structure

Rock that is formed when layers of sediment are deposited, compacted, and cemented over long periods of time

Process that describes how rocks are formed, broken down, and are changed over time

The process in which sediment is carried away or moved from one place to another by water, wind, ice, or gravity

Rock that is formed or changed when existing rocks are exposed to intense heat and pressure

Molten rock that has erupted onto Earth's surface

A scale from 1-10 that measures the hardness of minerals

Rock that forms when magma cools above the surface of Earth (outside a volcano)

Naturally formed solids that are made from one or more types of minerals

Rock formed from the cooling of molten rock. They can be intrusive or extrusive

A characteristic of something such as color, hardness, shape, transparency, or luster

Crystals that cool slowly will be ________________

than crystals cooled quickly

Parts of rocks, shells, and dead organisms that have been worn down into small pieces

Molten rock below Earth's surface

Igneous rock that forms when magma rises up and cools in a place underground (inside the Earth)

Property that describes how shiny a mineral is based on how much light is reflected

The process by which igneous rocks form

The process by which metamorphic rocks form

The process by which sedimentary rocks form

A person that studies rocks would be called a

What is the main way rocks are classified?