Classifying Rocks
Types of Rocks
Rocks
More rocks
The Rock Cycle
Study Jams
Random
100
Geologists classify rocks into 3 major groups
What is igneous, sedimentary, and metamorphic
100
Minerals that humans use include
Marble, Granite, Graphite, Gold, Silver
100
These rocks are tiny and can be moved by wind or water.
What is Sediment ?
100
This is how metamorphic rocks are created.
What is extreme heat and pressure
100
Magma cools and crystallizes in the cycle forming _______ rock
What is igneous rock
100
This common rock-forming minerals that form tetrahedrons which can form rocks like feldspar and quartz.
Silicates
100
This is the reason new minerals form in a metamorphic process
The need for stability
200
The type of rock that forms from magma or lava cooling
What is igneous rock
200
This type of rock is formed from lava ON the earth's surface.
What is extrusive igneous rock
200
These are the building blocks of rocks
Minerals
200
These types of rocks can become metamorphic rocks
What is igneous, sedimentary and other metamorphic rocks
200
Igneous rock transforms to sediment by processes called ___________ & ____________
What is weathering and erosion
200
Rocks with different textures but that are made of the same minerals have this
What is different names?
200
This is the driving energy source behind the formation of igneous and metamorphic rocks
Energy from Earth's interior
300
An extrusive rock with dark color, fine grains and low silica
What is basalt.
300
The type of rock are fossils most likely to be discovered in
Sedimentary rock
300
The formation of these rocks is driven largely by the energy from the Sun.
Sedimentary rocks
300
The process where layers of sediment become pressed together over time
What is compaction
300
Flat layers that form in rocks as rocks are squeezed by pressure
foliation
300
Rocks are generally identified by this means.
Texture and the mineral they contain
400
This type of felsic igneous rock is black with a glassy texture. 
What is obsidian
400
Formed by the burning of materials, this rock is used in keeping fires going.
What is Coal
400
The Devil's tower was formed by this process
What is Volcanic Eruption ?
400
Changes in a rock that is in contact with magma due to the magma's extreme heat
Contact Metamorphism
400
If rocks cool slowly describe the size of the crystal it will produce
What is large?
400
Describe sediment?
What is pieces of rock, sand and dirt?
500
Rocks are classified based on this.
How they were formed
500
Two igneous rocks may be made from the same minerals but have different names due to this.
They may have different textures
500
The processes by which sediments become sedimentary rocks - three words
Deposition, compaction or cementation
500
If granite undergoes high heat and pressure within the Earth, what type of rock will be formed.
Gneiss (a metamorphic rock)
500
Sedimentary rocks that include organic material are call this
Bioclastic sedimentary rocks