The Rock Cycle
Igneous Rocks
Sedimentary Rocks
Metamorphic Rocks
Potpourri
100
The process of sediments being worn away by wind, heat, or precipitation.
What is erosion?
100
These rocks form when molten magma has cooled and solidified inside or on the earth.
What are igneous rocks?
100
These rocks form near the earth's surface in layers.
What are sedimentary rocks?
100
Rocks made from igneous or sedimentary rocks that have been subjected to high pressure and very high temperatures.
What are metamorphic rocks?
100
Granite, basalt, and obsidian are all this type of rock.
What is Igneous?
200
The earth's crust is made up of igneous rocks, sedimentary rocks, and this other kind of layer of rocks.
What is metamorphic?
200
All igneous rocks form from this substance.
What is magma?
200
Most sedimentary rocks form under this.
What is water?
200
This creates the heat that changes most metamorphic rocks.
What is magma?
200
Marble, slate, and quartzite are all this type of rock.
What is Metamorphic?
300
Soil breaks down into this through weathering and erosion.
What are sediments?
300
Magma that has cooled below ground creates this type of rock.
What is an intrusive rock?
300
The process of sediments being glued together by minerals dissolved in water is called this.
What is cementing?
300
Heat, time, and this create metamorphic rocks.
What is pressure?
300
Sandstone, limestone, and shale are this type of rock.
What is Sedimentary?
400
Up to 100,000 tons of rock a year fall to earth from this place.
What is space?
400
Magma that has cooled above ground creates this type of rock.
What is an extrusive rock?
400
Layer after layer of sediments are deposited and the lower layers are "pressed" together tightly under the weight of the layers above in this process.
What is pressure?
400
Sandstone becomes quartzite, shale becomes slate, and limestone becomes this with heat, pressure, and time.
What is marble?
400
This kind of rock often contains fossils.
What is sedimentary rocks.
500
The rock cycle involves one type of rock changing into this.
What is a different type of rock?
500
Name two traits of igneous rocks.
Normally contains no fossils; Rarely reacts with acid; Usually has no layering; Usually made of two or more minerals; May be light or dark colored; Usually made of mineral crystals of different sizes; Sometimes has openings or glass fibers; May be fine-grained or glassy (extrusive)
500
Name two traits of sedimentary rocks
Often contains fossils; May react with acid; Often has layers; Is flat or curved; Usually composed of pieces cemented or pressed together; Has great color variety; Particle size may be the same or vary; Usually has pores between pieces; May have cross-bedding, mud cracks, worm burrows, raindrop impressions
500
Name two traits of metamorphic rocks.
Rarely has fossils; May react with acid; May have alternate bands of light and dark minerals; May be composed of only one mineral; May have layers of visible crystals; Usually made of mineral crystals of different sizes; Rarely has pores or openings; May be bent or curved
500
70 percent of the earth is this type of rock.
What is sedimentary.
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