A rock made of dead organisms.
What is a organic rock
A organic rock formed from plant debris.
What is coal
What are the five characteristics of a mineral?
naturally occurring, solid, inorganic, definite chemical composition, and crystalline structure
All of the following conditions can cause metamorphic rocks to form EXCEPT
exposure to air
heat
pressure
the presence of hot, watery fluids
What is exposure to air
Rocks are classified based on...
the way they are formed
What are the two ways rock material can turn into magma?
by touching other magma (intense heat)
or it can be drawn underneath Earth's surface along fault lines during movement of tectonic plates (intense pressure)
The crystals that form in fast cooling lava produce ____ mineral grains.
What is fine or small
Sediments in sedimentary rock are held together by ______
natural cements (minerals like quartz and calcite)