Types of Rocks
This type of rock forms from cooled lava or magma.
igneous rock
This process breaks down rocks into smaller pieces.
weathering
This rock has grains that were part of other existing rocks
sedimentary rock
Lava that cools quickly at the Earth's surface forms this type of igneous rock.
extrusive igneous rock
This is the thinnest layer of the Earth, where we live.
the crust
This type of rock forms from layers of sediment pressed together over time.
sedimentary rock
This process moves sediment from one place to another.
erosion
The cooling of magma makes ___________________ rock.
Intrusive igneous rocks
This type of sedimentary rock forms from the remains of plants and animals.
organic sedimentary rock
This part of the mantle is partially melted and allows tectonic plates to move.
the asthenosphere
This type of rock forms when existing rock is changed by heat and pressure.
metamorphic rock
This process turns sediment into sedimentary rock.
compaction and cementation
The cooling of lava makes ___________________ rock.
Extrusive igneous rock
This process turns lava into solid rock after a volcanic eruption.
cooling and solidification
This layer lies directly beneath the crust.
the mantle
Granite is an example of this type of rock
igneous rock
This process changes rocks into metamorphic rocks.
heat and pressure
Rocks that cool quickly have ____ crystals
small
This is the name for the continuous process that changes rocks from one type to another.
the rock cycle
The outer core is unique because it is in this state of matter.
liquid
This characteristic layered or banded texture in many metamorphic rocks
foliation
This process melts rocks into magma.
melting
This rock can contain pieces of once living organisms
How can slate change into gneiss?
heat and pressure
Which of the following can cause rock to go deep below Earth’s surface?
tectonic plate activity