Igneous Rocks
This can cool and harden and form igneous rock.
What is magma or lava?
These are little pieces of rocks, pebbles, mineral grains, and shell fragments that eventually form rocks.
What are sediments?
The way light reflects off of a mineral.
What is luster?
Name the three types of rock groups.
What is Sedimentary, Igneous and Metamorphic?
The process of rocks changing from one kind of rock to another kind of rock over long periods of time.
What is the rock cycle?
This kind of igneous rock is formed when magma cools beneath the Earth's surface.
What is Intrusive igneous rock?
These are two ways that sediments are formed.
What is weathering and erosion?
The scale that is used to measure the hardness of minerals
What is Moh's Hardness Scale
This sedimentary rock is made of organisms.
What is coquina?
Name two ways people use rocks.
What is buildings, walls, roads, jewelry, decoration, countertops?
This type of igneous rock forms when lava cools on the Earth's surface.
What is Extrusive igneous rock?
These 2 things cause metamorphic rocks to form.
What are heat and pressure?
Another way to identify minerals; it leaves the color of the powder behind when rubbed against a rough white tile.
What is streak?
A mineral is definite chemical composition, inorganic, crystalline structure and this.
What is a naturally occuring?
What are sediments?
This type of igneous rock is black with a glassy texture. We looked at it in class.
What is obsidian?
For an Igneous rock to become a sedimentary rock, what needs to happen?
What is weathering, erosion, compaction, and cementation?
This test is sometimes misleading as to true property of this feature.
What is Color?
A hard substance composed of one or more minerals.
What is a rock?
The hardest mineral.
What is a diamond?
This determines the size of crystals that form in igneous rocks.
What is the cooling rate of the magma or lava?
The type of sedimentary rock that can contain fossils.
What is organic sedimentary?
This feature is specific to when you weigh it in a liquid.
What is density?
The name for the property of a igneous rock with holes in it.
What is porous?
These are a way of testing the texture of a rock if it has smooth or rough surface.
What is cleavage or fracture?