Igneous rocks that form below the Earth's surface are ___________ rocks.
What is intrusive.
100
The small particles of rock or the remains of living things that make up sedimentary rocks are known as __________.
What is sediment.
100
Foliated and nonfoliated are terms used to describe the texture of _____________ rocks.
What is metamorphic.
100
A series of processes known as the _________continuously changes rocks from one kind to another.
What is rock cycle.
100
Skeletons of tiny ocean creatures form ____________, which can only be found in warm, tropical waters.
What is coral reefs.
200
An igneous rock that is formed from lava is called a(n) _______________ rock.
What is extrusive.
200
The process in which rock fragments are carried away by wind, water or ice is called____________.
What is erosion.
200
Geologists classify metamorphic rocks by the arrangement of the _________ that make up these rocks.
What is grains.
200
In the rock cycle, some rock melts and forms magma in the layer of the Earth known as __________.
What is mantle.
200
Two examples of common organic rocks are __________ and ____________.
What is coal and limestone.
300
Magma that is high in __________usually forms light-colored rocks such as granite.
What is silica.
300
When sediments settle out of moving water it is called ___________.
What is deposition.
300
Two of the most widely used metamorphic rocks are _______ and ________.
What is marble and slate.
300
__________ and __________ change sedimentary rock into metamorphic rock.
What is heat and pressure.
300
Coral reefs are made of ____________, a material that forms the skeletons of coral animals.
What is calcite.
400
______________ is the most common extrusive rock.
What is basalt.
400
The three types of sedimentary rock are....
What is clastic, organic and chemical.
400
Which properties change as a rock becomes metamorphic?
What is appearance, texture, crystal stucture and mineral content.
400
True or False, there are multiple pathways in the rock cycle.
What is true.
400
The type of sedimentary rock that forms due to mineral solutions that evaporate are called ______________.
What is chemical rocks.
500
Give three ways that igneous rocks differ.
What is 1) they are either extrusive or intrusive, 2) they differ in texture according to the size and shape of their minerals, 3) they differ in their mineral composition.
500
What is the process that changes sediment into sedimentary rock?
What is compaction and cementation.
500
Metamorphic rocks such as marble and quartz are said to be ______________ because their mineral grains are not arranged in layers or bands.
What is nonfoliated.
500
___________ changes an igneous rock into a sedimentary rock within the rock cycle.
What is erosion.
500
Name the three types of coral reefs:
What is 1) fringing reefs, 2) barrier reefs and 3) atolls.