Rocks 1
What are the 3 main classifications of rocks?
Sedimentary, Metamorphic, and Igneous
GNEISS is what type of rock?
Metamorphic
Name an example of a mineral
What are tiny pieces of rock or mineral fragments called?
Sediment
A naturally occurring solid that can form by inorganic processes and has a crystal structure and definite chemical composition
What type of rock is formed from COOLING of magma or lava?
Igneous
Which type of rock forms from the deposition, compaction, and cementation of sediments?
Sedimentary Rock
TRUE or FALSE: Minerals can be made from the cooling of magma or lava
TRUE
Which process acts on Earth's surface to break rocks into pieces?
Weathering
Igneous rocks with LOW/HIGH amounts of silica usually produce dark colored rocks
LOW
What type of rock forms when heat and pressure deep within the Earth melts and changes existing rock?
Metamorphic rock
This type of rock are formed ABOVE the ground when LAVA flows or explodes from a volcano (Be Specific!! This is a certain type of one of the 3 classifications)
Extrusive Igneous Rock
What is used to measure a mineral's hardness?
Mohs Hardness Scale
How does a sedimentary rock turn to magma??
Melting
Which grain SIZE is formed when an igneous rock cools QUICKLY?
Small grain size
These types of rock form UNDERGROUND from the cooling of MAGMA ***Be Specific!!
____________ _____________ ROCKs
Intrusive Igneous Rocks
CLASTIC, ORGANIC, and CHEMICAL are types of what kind of rock?
Sedimentary Rock
The repeating pattern of a mineral's particles forms a solid called a _______________
crystal
What is lithification
Transformation of sediment into rock (compaction and cementation)
Metallic, glassy, earthy, and pearly are words that describe a mineral's ______________?
Luster
What are ORGANIC sedimentary rocks made from?
Remains of plants and animals
Foliated and Non-foliated
Name 4 properties used to identify minerals
Luster, Hardness, Color, Streak, texture, Cleavage (breakage)
What type of rock are BASALT and GRANITE
IGNEOUS
What is the Law of Superposition?
This states that each rock layer or STRATA is older than the one above it