Rocks
True or False:
Studying a rock's texture can help scientists determine which type of rock it is.
True
This mineral is minded so that aluminum can be produced.
What is bauxite?
A measure for how easily a mineral can be scratched.
What is hardness?
This shows how one rock changes into another.
What is the rock cycle?
Metamorphic rocks that show layers of dark minerals alternating with layers of light minerals.
An inorganic solid with a unique crystal structure
What is a mineral?
Silver, gold and copper have shiny surfaces, so have this (two words) property.
What is metallic luster?
The process in which the weight from layers of sediment forces out fluids and decreases the space between grains.
What is compaction?
Rocks that are formed by fast moving rivers or streams that have polished and rounded the grains.
What is conglomerate?
Minerals can be identified based on these two properties.
What are physical and chemical properties?
The physical characteristic when one mineral will scratch another.
What is hardness?
This is a tectonic process that forces rocks onto Earth's surface throughout the rock cycle.
What is uplift?
These igneous rocks are rick in iron and magnesium.
What are basaltic igneous rocks?
The color of a powdered mineral left when you scratch a mineral on a porcelain plate.
What is streak?
Two factors that allow rocks to bend or fold without melting.
What is pressure & temperature?
This type of mineral has predictable crystal patterns.
What are gemstones?
Three ways metamorphic rocks form IN the Earth.
What are heat, pressure and presence of hot, watery fluids?
Physical properties that can be used to help identify a mineral include hardness, density, streak and luster. Name a property that is not as reliable to use for identification.
What is color?
The element in common to all three of these minerals:
Emerald Be3Al2Si6O18
Sapphire Al2O3
Ruby Al2O3
What is O (oxygen)?
A mineral composed of just one element.
What is a native element?