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earth science rocks
rocks
17
Science
8th Grade
11/06/2013

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Term
quartz

4.1
Definition
A hard silicate mineral.
Term
mineral

4.1
Definition
A naturally occurring, nonliving solid with a definite structure and composition.
Term
Order of rock cycle.

4.1
Definition
1. Sed. > heating - met.
2. Melting - ig.
3. Cooling
4. Weathering
5. Erosion
6. Sediments (deposition)
7. compaction
8. Cementation
Term
Difference between a rock and a mineral.

4.1
Definition
minerals are made up of elements or compounds while rocks are made up of groups of minerals, or other rocks
Term
Describe the rock cycle and the changes that a rock may undergo.

4.1
Definition
first can undergo chemical or mechanical weathering, then can break apart, and erosion.Older sediment is buried and compacted by new layers. It can also be buried and heated and become metamorphic rock.
Term
rock

4.1
Definition
mixture of minerals, mineraloids, glass or organic matter
Term
Rock cycle

4.1
Definition
The processes by which over many years, Earth materials form and change back and forth among igneous rocks, and metamorphic
Term
Kind of rocks

4.1
Definition
1. Sedimentary
2. Metamorphic
3. Igneous
Term
Igneous Rock

4.2
Definition
A rock formed by the cooling of molten material from a volcano or from deep inside Earth.
Term
Lava

4.2
Definition
Molten rock from a volcano flowing onto Earths surface.
Term
Intrusive

4.2
Definition
Igneous rocks formed when magma cools below Earth's surface; generally have large mineral grains.
Term
extrusive

4.2
Definition
Igneous rocks that form when magma extrudes [forces] onto Earth's surface and cools as lava; have a fine-grained texture.
Term
granitic

4.2
Definition
Light-colored igneous rocks formed from a magma rich in silicon and oxygen.
Term
basaltic

4.2
Definition
Dark-colored, dense igneous rocks that form from magma rich in iron and magnesium.
Term
Magma and lava are the materials that cool to form igneous rocks.

4.2
Definition
none
Term
contrast the making of intrusive and extrusive rocks.

4.2
Definition
Intrusive rocks form below Earths surface. Extrusive rocks form on Earths surface.
Term
contrast granitic and basaltic igneous rocks.

4.2
Definition
Basaltic rocks are dense, heavy, dark-colored rocks that form from basaltic magma(which is rich in iron and magnesium). Granitic rocks are light-colored rocks of a lower density than basaltic rocks. (Granitic magma is thick and stiff and contains a lot of silicon and oxygen.)
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