Rocks
Are rocks pure or unpure?
unpure
Are minerals pure or unpure?
Pure
How are igneous rocks formed?
From the cooling of lava or magma
What state of matter are minerals?
All minerals are solids
What is magma?
Molten rock within the Earth
What are rocks made out of?
Mixtures of minerals
What are minerals made out of?
Elements or compounds
How are metamorphic rocks formed?
Form when either igneous or sedimentary rocks are altered by heat and or pressure.
How do you identify minerals?
By looking at their characteristic properties
What is lava?
Molten rock that has been forced out onto the surface of the Earth
What are the three categories of rocks?
Igneous, Sedimentary, Metamorphic
What common material do we use to measure the hardness of minerals?
Our fingernails ~ hardness of 2.5
Which kind of rock can include the remains of living things such as shells, bones, leaves, and stems?
What are two characteristic properties of minerals?
What is luster?
A measure of how minerals reflect light.
Formed from weathered rock materials that are fused together to form rock.
Why is color not always a reliable way to identify minerals?
Some minerals, such as quartz, can have many different colors.
What is slate metamorphosed from?
Shale
What is the difference between cleavage and fracture?
Cleavage means the mineral breaks into flat planes
Fracture means the mineral breaks into rough or rounded and jagged edged pieces.
What does inorganic mean?
Not carbon based
What do you call igneous rocks that form below the Earth's surface?
What are two ways minerals form?
Cooling of melted earth materials, evaporation, and precipitatiion
What do you call igneous rocks that form above the Earth's surface?
Extrusive igneous rocks.
What does it mean that minerals are inorganic?
Not carbon based compounds
What is a porphyritic rock?
Have large crystals imbedded inside a background of finer small crystals.