Classifying rocks
A natural, solid mixture of minerals and grains.
what is a rock
It is called this when it is on Earth's surface and something else when it is under the Earth's surface.
what is Lava when on Earth's surface and magma when it is under Earth's Surface.
What is sediment?
what is these small pieces (rocks, plants, animal organisms) that break off of the earth because of wind and water erosion.
Name one example of a metamorphic rock.
what is quartzite, marble, slate
Geologists classify rocks into these 3 major groups.
What are igneous, sedimentary, and metamorphic rocks?
The type of rock that forms from magma or lava cooling is called this.
what is Igneous rock
What are the crystals like in an extrusive rock?
what is Small or impossible to see with the human eye
Name two examples of sedimentary rocks.
what is sandstone, shale, limestone, conglomerate
What does morph mean?
what is to undergo transformation or change.
A rock transforms to sediment by these two processes.
What are weathering and erosion?
This type of rock forms from sediments being compacted and cemented together.
what is sedimentary
Igneous rock that formed from magma and cooled very slowly underneath the earth's surface.
what is Intrusive
Name two characteristics of sedimentary rocks.
what is chunks of sediment, fine grains, layers, fossils
How do metamorphic rocks form?
what is they are sedimentary or igneous rocks that are near magma and get heat from it and pressure from layers above.
DAILY DOUBLE!!! I have a sedimentary but then extreme heat and pressure are applied to it. What type of rock will it change into?
what is a metamorphic rock
This type of rock needs heat and pressure to form.
what is Metamorphic Rock
How is an extrusive igneous rock formed?
what is from lava on the earth's surface.
Sedimentary rocks usually have crystals? T or F?
what is false
This type of rock needs heat and pressure to form.
what is metamorphic Rock
I have a metamorphic rock that melts, then cools and crystallizes. What type of rock will it turn into?
what is igneous Rock
What are the two characteristics geologists use to identify rocks?
what is texture and composition
This igneous rock is very light, has holes in it, and can float in water.
what is Pumice
How do sedimentary rocks form?
what is the sediment falls to the bottom of the ocean, and is cemented together over 1000s of years.
What would have to happen to a metaphoric rock in order for it to change into sedimentary rock?
what is weathering and erosion
Metamorphic rock turns into what after melting?
what is magma.