The Rock Cycle
A mixture of minerals, mineraloids, glass or organic matter
What is a rock?
This is the temperature for rocks to turn into magma.
What is 1400 degrees Celsius?
Two things that cause rocks to change in their chemical composition
What is temperature and pressure?
This very useful sedimentary rock comes from dead plants and animals compacted for millions of years. We now use it as an energy source
What is COAL?
These are the most abundant type rocks on Earth.
What are igneous rocks?
A model explaining how the three different types of rocks are formed
What is the "rock cycle".
Magma reaches Earth's surface because it is _______
than the surrounding rocks.
It is MORE DENSE
Metamorphic rocks and grouped and classified according to this
What is their "texture"?
The process when sediment is "glued" together to form a rock.
What is "cementation"?
Seventy-five percent os rocks found at Earth's surface are these types of rocks.
What are sedimentary rocks?
The three main processes that form rocks.
What is 1. compaction & cementation 2. heat & pressure 3. melting & cooling
Magma flowing on Earth's surface is called this.
What is "lava"?
When mineral grains flatten and form parallel bands
What are "foliated rocks"?
Because the United States was covered for millions of years by the ocean, you will find large areas of this rock that contains sea creature fossils.
What is LIMESTONE.
The most common mineral found in rocks is ______.
Quartze
This is the term given to all the bits and pieces of eroded minerals and organic matter.
What is "sediment"?
The two classifications of igneous rock depending on where the rock is formed.
What is intrusive and extrusive?
When metamorphic rocks have no bands but only change in the arrangement and size of their mineral grains
What is "nonfoliated rock"?
The sedimentary rock comes from the microscopic calcite shells of once-living ocean animals.
What is CHALK?
This classification of igneous rock are light-colored, lower in density, and contain a lot of oxygen and silicon.
What is GRANITIC igneous rock?
Granite is mainly a mixture of these four minerals.
What is feldspar, quartz, mica, and hornblende?
This class of igneous rock comes from magma that is rich in iron and magnesium.
What is "Basaltic Rock"?
Marble is metamorphosed from this sedimentary rock.
What is limestone?
This sedimentary rock changes into marble when exposed to extreme heat and pressure.
Limestone
This type of rock is formed from igneous, sedimentary, and other metamorphic rock under heat and pressure.
What is METAMORPHIC ROCK?