Minerals
Igneous Rocks
Sedimentary Rocks
Metamorphic Rocks
Classifying Rocks and the Rock Cycle
100
Two ways minerals form.
What are from solutions and from magma or lava?
100
Dark-colored rocks, such as basalt, are formed by this kind of silica content?
What is low silica content?
100
Small, solid pieces of material that come from rocks or living things.
What is sediment?
100
Any rock that forms from another rock as a result of changes in heat or pressure (or both).
What is a metamorphic rock?
100
Earth layer made up of huge plates.
What is the lithosphere?
200
A scale to help identify minerals by how hard they are.
What is the Mohs hardness scale?
200
Two ways in which igneous rocks are used.
What are for tools and building materials?
200
The process by which sediment settles out of the water or wind carrying it.
What is deposition?
200
Marble has an even _________, so it can be cut into thin slabs or carved into many shapes.
What is grain?
200
A slow cycle that builds, destroys, and changes rocks in the crust.
What is the rock cycle?
300
The shape of quartz's crystal structure.
What is hexagonal?
300
Depends on the size and shape of the rock's minerals crystals.
What is texture?
300
Type of sedimentary rock made of rock fragments with rounded edges.
What is conglomerate?
300
Type of metamorphic rock formed from granite.
What is gneiss?
300
About 20 minerals that make up most of the rocks of Earth's crust.
What are rock-forming minerals?
400
Two properties that deal with how a mineral splits apart.
What are cleavage and fracture?
400
Two categories of igneous rocks.
What is extrusive and intrusive?
400
Three major types of sedimentary rocks.
What is clastic, organic, and chemical?
400
Two ways in which metamorphic rocks are classified.
What are foliated and nonfoliated?
400
Type of rock formed from the cooling of magma or lava.
What are igneous rocks?
500
Five characteristics that all minerals have.
What are naturally occurring, solid, formed by inorganic processes, has a crystal structure, and a definite chemical composition?
500
Three ways in which igneous rocks are classified.
What are by their origin, texture, and mineral composition?
500
The sequence of processes that form sedimentary rocks.
What is weathering and erosion, deposition, compaction, and cementation?
500
Specific type of rock that forms when sandstone undergoes heat and pressure.
What is quartzite?
500
Three terms geologist use to describe the texture of a rock.
What are grain size, shape, and pattern?
M
e
n
u