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18 terms

Science Ch. 3-1 Test

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hardness
A mineral's resistance to being scratched. Moh's scale is used to measure this property.
mineral
A solid element or compound from Earth's crust that has a definite chemical composition and crystal shape.
streak
The color of a mineral in powdered form. Most mineral's powder form are colorless.
luster
The way a mineral reflects light.
cleavage
The tendency of a mineral to break along flat surfaces. Mica has planes that are all in the same direction.
What are the flat, shiny surfaces created by gem cutters called?
facets
What mineral is glass made from?
quartz
What is an identifying property of a mineral (like luster and hardness)?
Color
Pyrite is similar to gold, but they are very different in terms of there what?
hardness
What do computer chips contain?
silicon
concrete
a strong hard building material composed of sand and gravel and cement and water
natural resources
materials found in nature that are used by living things
renewable resources
resources that can be replaced
nonrenewable resources
resources that cannot be replaced
How can you identify an unknown mineral?
Know 2 ways
What are diamonds and where are they found?
A diamond is the hardest mineral and is made of pure carbon. It forms deep underground. They can be found in only a few locations in the world. They are found in stream deposits called placers.
What is the different between renewable and nonrenewable resources?
Renewable resources can be replaced and nonrenewable resources cannot be replaced.
Why are Earth's mineral resources valuable?
Know 2 ways