Minerals
True or False: A characteristic of minerals is that it must come from organic (once living) matter.
False
Igneous, metamorphic, and sedimentary
True or False: Coal is an example of a sedimentary rock
True
This shape is caused by the arrangement of atoms in minerals
Crystal
This property is not a very good way to identify minerals because it is the same for many substances, such as pyrite and gold and purple quartz and amethyst.
Color
The process where rocks change from one type to another over long periods of time is called the __________ _________.
Rock Cycle
Rocks are made up of two or more ______________.
minerals
_________ means the material does not come from living things.
Inorganic
When a mineral breaks in an uneven way, leaving the mineral with a rough surface, it is called a ____________.
fracture
Rocks that form slowly beneath Earth's surface are called ___________ igneous rocks.
intrusive
These types of rocks form due to heat, pressure, and time.
Metamorphic rocks
What is the color of a mineral in its powdered form called, obtained by rubbing the mineral on a hard white or black surface?
Streak
What scale do we use to test a mineral's hardness (its ability to be scratched)?
Mohs Scale
Rocks that cool quickly from lava outside of a volcano are called ____________ igneous rocks.
extrusive
__________ sedimentary rocks are formed from the accumulated remains of once living things.
Organic
The way a mineral reflects light is called ________.
luster
The property of a mineral splitting evenly along a flat surface is called _____________.
cleavage
Fossils are typically found in this type of rock which forms from accumulated and cemented sand, silt, mud, or organic material, which can preserve plant and animal materials.
Sedimentary rock
What are the two types of metamorphic rocks called?
Foliated and Non-foliated
_________________ refers to the breaking apart and movement of rocks and other materials by natural forces such as wind or water. Rocks and even entire mountains are slowly broken up by this process.
Weathering and erosion