Classifying Rocks
Rocks that form from molten rock.
What is Igneous Rock?
Igneous rock that forms when magma cools beneath the surface.
What is Intrusive Rock?
The process by which sediment settles out of water.
What is deposition?
Coral reefs are most abundant here.
What is tropical oceans?
The series of processes that slowly change rocks from one kind of rock to another.
What is the rock cycle?
Rock that forms when existing rock is changed.
What is Metamorphic Rock?
Igneous rock that forms on Earth’s surface when lava cools.
What is Extrusive?
The type of rocks that form where the remains of plants and animals are deposited in thick layers.
What is Organic Rock?
The skeletons of living coral form structures called this.
What is a coral reef?
These two forces can change rocks in to metamorphic rocks.
What is heat and pressure?
Rock that forms when particles are pressed and cemented.
What is Sedimentary Rock?
The texture of an igneous rock depends on the size and shape this.
What is its crystals?
Rock that can form when minerals dissolved in a solution crystallize.
What is Chemical Rock?
The outer shells of coral animals are formed from this.
What is calcite?
These types rocks can be changed into metamorphic rocks.
What are igneous, sedimentary, and metamorphic rocks?
Earth's crust is made of this.
What is rock?
Igneous rocks high in silica are usually this color.
What is light-colored?
Sedimentary rock that forms when rock fragments are squeezed together.
What is Clastic Rock?
Animals absorb this substance from ocean water.
What is Calcium?
In the rock cycle, an igneous rock changes to a sedimentary rock with this first process.
What is erosion?
Geologists classify rock according to this.
What is it's origin?
If magma cools in two stages, the igneous rock will be this.
What is Porphyry Rock?
The process is which thick layers of sediment press down on the layers beneath them.
What is compaction?
In the United States there are living coral reefs found in these two areas.
Describe the process of granite being changed into sandstone.
What is erosion, deposition, compaction, cementation?