Igneous Rocks
Igneous rocks are formed by _________ of magma and lava.
What is "cooling"?
This is what sedimentary rocks start off as.
What is "sediment"?
These are rocks that can become metamorphic rocks.
What are "sedimentary, igneous, and most metamorphic rocks"?
The three categories all rocks can be put into.
What are igneous, sedimentary, and metamorphic?
This is a naturally formed solid made from one or more minerals.
What is a Rock?
Rock that is found inside a volcano is most likely make from this type of molten rock.
What is "magma"?
Movement of rock and sediment from one place to another by forces such as air and water.
What is "erosion"?
These two things are required for a metamorphic rock to form.
What are "heat and pressure"?
A rock that was sediment, then went under pressure, then was melted down and crystalized or cooled inside a volcano is this type of rock.
What is a igneous rock?
A solid, inorganic substance of natural occurrence that has a definite chemical composition.
What is a Mineral?
Igneous Rocks formed from molten rock below (magma) the Earth’s surface. Often very hard and have more colors
What is "intrusive"?
The process of compaction and cementation create these layers called what?
What are "beds"?
Slate is useful for flooring, roofing, chalkbaords and outdoorwalkways for this reason.
What is "splitting easily into flat pieces"?
These types of rocks can become sediment by weathering.
What is any type of rock?
This is the continuous process by which rocks are formed, changed from one form to another, destroyed, and then formed again.
What is the Rock Cycle?
This is why Obsidian is classified as a mafic extrusive igneous rock.
What is "low silica (mafic) and small crystals (extrusive)"?
This type of rock is formed from dead trees and plants (also known as fossils).
What is "Coal"?
Granite undergoes heat and pressure to metamorphic into this nice type of rock used for building materials.
What is "Gneiss"?
These are the only types of rocks in which fossils can be preserved.
What are "sedimentary rocks"?
This type of rock is formed by creating a cavity within a rock formation. The most common way is when water vapor and carbon dioxide gets trapped inside streams of lava and magma.
What is a "geode"?
Igneous rocks can be classified into these two types.
What are "intrusive (basalt) and extrusive (granite) rocks"?
Sedimentary rocks can be classified into these three categories.
What are "clastic, chemical and biochemical"?
These are the two categories that metamorphic rocks can be put into.
What are foliated and nonfoliated?
The concept of the Rock Cycle is attributed to this 18th century founder of modern of geology.
Who is "James Hutton"?
Metamorphic Rocks that form from uneven pressure, which deforms the rock, making it appear to have stripes.
What is "foliated"?