Punk?
This type of rock forms when magma cools and hardens inside the Earth
What is intrusive igneous rock?
This is the scientific name for crystals
What is mineral grains?
These kinds of rocks are rich in iron and magnesium
What are basaltic rocks?
These kinds of rocks cool so quickly that few or no mineral grains form
What is volcanic glass?
Gabbro
What is an intrusive igneous rock?
This type of rock forms from particles of sand, shells, pebbles and other fragments
What is a sedimentary rock?
This is how intrusive rock forms
What is when mineral grains grow together?
These kinds of rocks come from thick or stiff magma and are rich in silica
What are granitic rocks?
This type of rock is formed as lava cools on Earth's surface
What is extrusive igneous rock?
Obsidian
What is an extrusive igneous rock?
This type of rock forms under the surface of the Earth due to intense heat and pressure
What is metamorphic rock?
Smaller crystal size
What is a shorter period of time to form?
These kinds of rocks are extrusive and explode violently from volcanoes
What are Andesitic rocks?
The process by which sediment is converted into sedimentary rock and includes compaction and cementation
What is lithification?
Gneiss
What is a metamorphic rock?
This type of rock usually contains fossils
What is sedimentary rock?
This type of rock is transformed by changes in temperature, pressure or the presence of hot watery fluids
What are metamorphic rocks?
This is the creation of smaller pieces of rock through physical or chemical means
What is weathering?
This type of rock often contains fossils
What is sedimentary rock?
Conglomerate
What is a sedimentary rock?
This is the most common rock on Earth
What is igneous rock?
To change a sedimentary rock into a metamorphic rock, these two things are needed
What is heat and pressure?
To change a metamorphic rock into an igneous rock, this is needed
What is melting?
To change an igneous rock into a sedimentary rock, these three things are needed
What is weathering, erosion, and deposition?
Schist
What is a metamorphic rock?