Properties
materials that were never alive
inorganic
round hollow rock often lined with crystals
geode
scientist who studies rocks
geologist
small solid pieces of material that come from rocks or remains of living things
sediment
Process where dissolved minerals stick together to form sedimentary rock.
cementation
how light is reflected from a mineral's surface
luster
hard, colorful mineral found naturally in the earth;
gemstone
the number of minerals that make up most of the earth's rocks of the crust
20
Granite is this kind of rock which formed when magma hardened beneath earth's surface
intrusive
The series of process that change one type of rock into another type of rock.
rock cycle
the hardess scale
Moh's Hardness Scale
when atoms are arranged to form a material with a crystal structure
crystallization
determined by a rock grain's size, shape, and pattern
texture
This can sometimes be determined by the color of the rock.
composition
When magma cools inside the crust or as lava hardens on the surface, this cooling forms _____.
crystals
if a mineral breaks in an irregular way
fracture
smelting
Rocks are classified according to how they ___.
form
Process by which sediment settles out of the wind or water.
erosion
Glassy, metallic, and dull are terms to describe a rock's _______.
luster
color of it's powder
streak
minerals such as aluminum, iron, copper
metals
These rocks are made when magma, or lava, cools.
igneous
Metamorphic rocks with grains arranged randomly.
non-foliated
A mineral with a harness of 6 will scratch a mineral with a hardness of ______ than 6.
less