Minerals
Rubbing a mineral across a white, unglazed tile produces this.
What is a streak?
This extrusive rock cooled so fast it turned into glass.
What is obsidian?
These are little pieces of rocks, pebbles, mineral grains, and shell fragments that eventually form rocks.
What are sediments?
These 2 things cause metamorphic rocks to form.
What are heat and pressure?
Rocks are made from these.
What are minerals?
When a mineral breaks along a flat surface it shows this property.
What is cleavage?
This can cool and harden to form igneous rock.
What is magma or lava?
The steps that lead to creating a sedimentary rock (4 of them).
What is weathering, erosion, deposition and lithification?
This classification metamorphic rock shows bands of different minerals. Gneiss is an example.
What is foliated rock?
These are rocks formed from the solidification of magma.
What are intrusive igneous rocks?
This scale is based upon the relative hardness of common minerals and objects.
What is Mohs' scale of hardness?
This kind of igneous rock is formed when magma cools beneath the Earth's surface.
What is Intrusive igneous rock?
This bioclastic sedimentary rock is made from plant remains.
What is coal?
This type of metamorphism occurs when rock touches magma.
What is contact metamorphism?
These rocks are formed through compaction and cementation.
What are sedimentary rocks?
The crystal structure of an mineral is determined by the arrangement of these.
What are atoms?
This is the colour of a igneous rock that has a high silica content.
What is felsic?
Halite is an example of one way that sedimentary rocks can be formed.
What is crystalline OR chemical? Either one for the point.
This type of metamorphism occurs between tectonic plates.
What is regional metamorphism?
If an igneous rock weathers, what rock does it turn into?
What is sedimentary rock?
The 5 criteria that a mineral must meet.
What is a naturally occurring, inorganic solid, that has a definite chemical composition and crystal structure.
This texture is used when an igneous rock has holes in it from escaped gas. Pumice is an example.
What is vesicular?
The texture of rocks that are made of lots of sediment that has lithified.
What is clastic?
This type of rock is the highest grade of metamorphic rock.
What is gneiss?
A metamorphic rock has to turn into this substance before it becomes an igneous rock.
What is magma?