Igneous Rocks
Motlen rock on the outside of the Earth surface is called?
Lava
How long does it take for a sedimentary rock to form?
Hundreds of thousands to millions of years
How long does it take a metamorphic rock to form?
Instantaneous to hundreds of thousands to millions of years
What process turns a metamorphic rock into an igneous rock?
Melting
What is weathering?
The breaking down of rock into small pieces
Molten rock on the inside of the Earth is called?
Magma
The 3 processes that form a sedimentary rock are?
Deposition
Compaction
Cementation
Contact Metamorphism requires what to occur>
Heat
What process causes a igneous to to turn into a metamorphic rock?
Heat and pressure
What is erosion?
The transport of small pieces of rock
I am made from lava on the outside of the Earth
Extrusive Igneous rock
What is compaction?
Where layers are placed on top of each other with increasing pressure
Regional metamorphism requires what to form>
Heat and pressure
What process causes and Igneous rock to change into a sedimentary rock?
Weathering and erosion
What are three methods of erosion?
Wind, water, biological (people/animals)
I am made from magma on the inside of the Earth
Intrusive igneous rock
What is deposition?
Where small pieces of rocks are dropped at the bottom of a body of water such as a lake/river/ocean
Dynamic Metamorphism requires what to occur
Pressure
What three types of rocks are in the rock cycle?
Sedimentary
Igneous and
Metamorphic
What are 3 types of physical weathering?
Wind
Water
frost/wedge ( ice wedge)
How long does an igneous rock take to form?
Days/weeks to hundreds of thousands to millions of years.
What is cementation>
Pressure squeezes out water and the rocks are glued together with minerals
How does a metamorphic rock become a sedimentary rock>
Weathering
Deposition
Compaction and
Cementation
Where does the rock cycle start from?
There is no start, it a continuous cycle.
What is chemical and biological weathering?
Chemical weathering is acid rain, chemicals in the atmosphere combine with water ti break down rock.
Biological weathering is where plants grow through the rock and causes them to break.