Minerals
What is a mineral?
Minerals are inorganic, solid materials found in nature.
What is mineral identification based off of?
Color, Cleavage, Fracture, Hardness and Specific Gravity.
Does the rock cycle have a specific starting point?
No.
What forms sediment?
Broken bits of shell, mineral and rock form sediment.
What are volcanic rocks called?
What are volcanic rocks?
How many minerals have been discovered?
Over 4,000
True or False: Minerals are always as heavy as they look?
False, minerals sizes can be deceiving for weight.
How long does the rock cycle take?
Hundreds and thousands of years.
These rocks are made of grains and minerals or other rocks that have been moved and deposited in layers, other minerals dissolved in water to make these rocks come together.
What are detrital rocks?
How does melted rock form?
Melted rock forms in two ways, lava shoots out of an erupting volcano, or lava oozes out of a volcano underground and cools in water.
How do minerals form?
Magma cools and becomes minerals.
Geologists use what scale to identify minerals?
Mohs Scale.
What is magma?
Molten rock beneath Earth's surface.
These rocks form when mineral rich water from geysers, hot springs, or lakes evaporate and the minerals left behind form rock layers.
What is a chemical rock?
How common is lava flow in Hawaii?
So common that you can see one almost every day.
How do you know if a mineral cooled quickly?
The mineral is even and smooth.
What is usually included in the kit used to identify minerals?
Pennies, Nails, and Tile pieces.
Are magma and lava the same thing? Why or why not?
No. Magma is melted rock beneath Earth's surface, lava is melted rock on top.
These rocks occur when living matter dies and the minerals they leave behind form sedimentary rocks like chalk and coal.
What are organic rocks?
What is an extrusive rock?
What is a rock that hardens on Earth's surface?
How do you identify crystals?
Look at color, shape and size.
What is the difference between foliated and nonfoliated rocks?
Foliated rocks have layers, nonfoliated rocks do not.
Define metamorphic rock.
The word metamorphic means change of form, these rocks change in appearance and composition when this happens.
These occur when a last remaining trace of animal and organism are left behind and compressed into a sedimentary rock.
What are fossils?
How long does is take magma to cool?
What is a big ole long time. (100s-1000s of years)