Oh Pretty
True or False
A gem is a mineral that has already been cut and polished.
True
Which layer of the Earth do we live on?
The crust
Metamorphic rock forms when:
Rocks are changed by heat and pressure below the Earth’s surface
Movement of sediment from one location to another over the earth’s surface
erosion
Anything that is or was part of a living thing.
organic
A stone that is hard, beautiful, and rare.
What is a precious stone?
Where is the mantle located?
Between the outer core and the crust
True or False
Foliated metamorphic rock can split into flat sheets.
True
when water or wind drops or deposits sediment in a new location
deposition
The upper section of the geosphere, and is made up of the crust and the upper area of the mantle.
lithosphere
mineral that has already been cut and polished.
What is a gem
A large piece of solid rock that floats on melted rock in the mantle
A plate
forms when lava cools and hardens quickly on the earth’s surface.
extrusive igneous rock
Hot melted rock found within the earth. (underground)
magma
An Earth system, the solid and molten rock, the soil, and the sediment that make up the earth’s land.
Geosphere
Someone who cuts, polishes, and engraves gems.
Who is a Lapidary
Rock that contains valuable minerals
ore
Marble is an example of what type of rock?
Metamorphic rock or
non-foliated metamorphic rock
The process that breaks down or changes rocks
weathering
a strip or pocket of minerals within the Earth’s layers.
vein
what stones are easier to find and more common than precious stones.
Semiprecious stone
The geosphere includes:
The solid and molten rock, soil, and sediment that make up the Earth’s land
Sedimentary rock forms when:
Layers of sediment and organic material harden
Small bits of weathered rock
sediment
the process of removing metals from rock by heating
smelting
Diamond
Seismology
Igneous rock forms when:
Magma or lava cools and hardens
Organic particles in the soil from decaying plants and animals
humus
melted rock that flows out of volcanoes.
lava