Rock Funfamentals
A mixture of one or more minerals, rock fragments, or organic matter.
Rock
The process of breaking rocks down into smaller pieces.
Weathering
Sedimentary rocks are composed of these broken pieces.
Sediment
Where do INTRUSIVE Igneous rocks form?
Inside the earth.
What is the meaning of Metamorphic?
Change of form
Identify whether granite is a rock or a mineral.
Rock
The process of transporting sediments from one place to another.
Erosion
The primary geological setting where sedimentary layers accumulate.
Earth's surface
Quickly
What are the two terms we use to classify metamorphic rocks?
Foliated/non-foliated
What is the difference between a rock and a mineral?
A mineral is a naturally occurring, inorganic, crystalline solid. A rock is a mixture of minerals and other materials compacted together.
Squeezing sediments together by the weight of overlying layers.
Compaction
The sequence of events that forms sedimentary rock from sediments.
Compaction and Cementation
What does Igneous rock form from?
Magma/Lava
Heat and Pressure
The three main groups rocks are classified in.
Sedimentary, Igneous, Metamorphic
The step where dissolved minerals precipitate to glue sediment particles together.
Cementation
What would be closer to the bottom of a rock, older or younger sedimentary rocks?
Older
What is a major factor when determining crystal size?
The speed at which the material it forms from cools.
The term for metamorphic rocks that show distinct mineral bands or layers.
Foliated
The two events in order when lava erupts and turns into igneous rock.
Lava flows from volcanoes, cools, and forms into igneous rocks.
Explain why any rock type can turn into any other rock type.
The rock cycle is a continuous process by which rocks are changed from one type to another by various natural processes such as weathering, compaction, and melting.
Three visual characteristics that identify sedimentary rock layers.
Banding, Fossilization, Coloration
Why pumice has holes and can float on water while obsidian cannot.
Pumice is less dense because as it cooled it had gas bubbles that left air pockets inside the stone. Obsidian cooled so quickly that few or no mineral grains formed, and it is more dense.
What types of rocks can metamorphic rock form?
Sedimentary, Igneous, or other metamorphic.