Earth Science Topic 11
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Earth Science Topic 11
Earth Science Rocks Minerals
Study Guide for Regents Earth Science: Earth Materials
What is a mineral?
a naturally occuring, inorganic, crystalline solid having a definite chemical composition
What type of structure is this?
Name four ways minerals are identified.
By: Color, streak, luster, hardness, density, cleavage, and cyrstal structure
What property of a mineral can be observed by the color of the powder the mineral leaves behind?
What property of a mineral can be seen by the way it is reflected under light?
The resistance of a mineral to being scratched is what property?
How is the density of a mineral or substance calculated?
Divide the mass by the volume. Density=mass/volume
The tendancy of a mineral to break along zones of weakness and form smooth to parallel sides is called:
The outward geometric shape of a mineral in the crystal form is called:
Uneven breaking of surfaces is called:
How are crystals formed?
Crystals are formed by inorganic crystalization (organizing atoms to make solids) and by recrystalization of atoms in the form of a solid, liquid or gas.
Using Mohs harness scale, what is the softest mineral?
Using Mohs harness scale, what is the hardest mineral?
Using Mohs harness scale, what mineral had a hardness of 5?
Loose rock material which includes soil is called:
What is the name of the solid rock beneath the regolith?
What is the difference between a rock and a mineral?
A rock is made of two or more minerals, a mineral is composed of only one type of substance.
If a rock is said to be monomineralic, how many minerals are in it?
If a rock is said to be polymineralic, how many minerals are in it?
two or more
According to the chart above from your ESRT, what two elements make up about 75% of the earth's crust?
Oxygen and Silicon
The size, shape and arraingement of the materials that a rock is composed of is called:
What are individual grains of minerals called?
What are rocks that were formed from an accumulation of sedements from pre-existing rocks of organic material called?
What is the process called when sand, silt, and pebbles are cemented together?
How are clastic sedimentary rock composed of and how are they made?
Rock composed of solid sediments, such as sand in limestone, or tiny pieces of clay in shale cemented together over time.
What type of rocks are fossils mainly found in?
What are igneous rocks?
Rocks formed when natural, molten (Liquid) rock-forming material cools and turns into a solid
What is magma?
Liquid rock beneath Earth's surface.
When magma cools to form rocks above the Earth's surface, what type of igneous rocks are formed, intrusive or extrusive?
extrusive igneous rock
When magma cools to form rocks beneath the Earth's surface, what type of igneous rocks are formed, intrusive or extrusive?
intrusive igneous rock