Show:
Igneous Rocks
Sedimentary Rocks
Sedimentary Rock Formation
Metamorphic Rocks
Essay
100
Rock that forms from the cooling of magma below Earth's surface or lava at the surface is called ____________.
Igneous.
100
Two common uses for sedimentary rocks are building materials and ___________.
tools
100
Small, solid pieces of material that come from rocks or living things are called _______.
sediment
100
Foliated and nonfoliated are terms used to describe the texture of _____________ rocks.
metamorphic
100
Explain why metamorphic rocks rarely form close to Earth's surface.
In order for a rock to become metamorphic, it needs to be subjected to great heat and pressure. There isn't much heat or pressure close to the surface, so theyn usually form deep underground
200
Igneous rock that formed from lava that erupted onto Earth's surface is called _________.
Extrusive
200
The texture of slate is said to be ________ because its mineral particles can be seen only with a microscope.
fine grained
200
The carrying away of rock fragments by water, wind, or ice is called _________.
erosion
200
Metamorphic rocks that do not split into layers are called __________ rocks.
nonfoliated
200
What are the three main types of sedimentary rocks?
clastic, organic, chemical
300
An igneous rock that is formed from magma below Earth's surface is called an ____________ rock.
intrusive
300
Coal is an example of an ________ rock because it forms where thick layers of plant and animal remains are deposited.
organic
300
As layer upon layer of sediments are deposited, the process of __________ presses them together.
compaction
300
The texture of a metamorphic rock that has grains arranged in parallel layers is described as ______.
foliated
300
What is the difference between foliated and non-foliated rocks?
Foliated rocks are arranged in parallel layers or bands and split easily into layers. Nonfoliated rocks are arranged randomly and do not split into layers.
400
When all the grains in a rock are large and easy to see, the rock is described as __________.
coarse grained
400
A _________ rock is a sedimentary rock that forms when rock fragments are squeezed together.
clastic
400
The process by which sediment settles out of the water or wind carrying it is _________.
deposition
400
Where does most metamorphic rock form?
Deep beneath Earth's surface.
400
What is the difference between intrusive rocks and extrusive rocks?
Extrusive rocks form from lava that cools on Earth's surface. Intrusive rocks form from magma that cools beneath Earth's surface.
500
Igneous rock that cools very quickly when it forms may have a texture that is __________.
smooth, shiny, no-visible grain
500
When seas or lakes evaporate, a type of sedimentary rock called a ___________ rock can form.
chemical
500
The process by which dissolved minerals crystallize and glue particles of sediment together is _________.
cementation
500
_______ and __________ deep beneath Earth's surface can change any rock into metamorphic rock.
heat and pressure
500
Which types of rocks can be transformed into metamorphic rocks?
Igneous, Sedimentary, and other Metamorphic rocks