Igneous Rocks
This can cool and harden and form igneous rock.
What is magma or lava?
These 2 things cause metamorphic rocks to form.
What are heat and pressure?
The way light reflects off of a mineral.
What is luster?
Water freezes in the crack in a rock, splitting it and making a larger crack. This is an example of:
What is freeze-thaw (physical weathering).
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?
Melted rock inside Earth's surface is called.
Magma
This type of metamorphic rock has aligned, striped grains.
What is a foliated rock.
The scale that is used to measure the hardness of minerals
What is Moh's Hardness Scale
Allen's Creek waters moving sediment from one location to another is an example of:
Erosion
The 2 G's and 3 W's that weather and erode Earth's surface.
What is gravity, glaciers, water, waves and wind.
This kind of igneous rock is formed when magma cools beneath the Earth's surface.
What is Intrusive igneous rock?
Geologists categorize minerals into groups (such as silicate group, carbonate groups) based on:
What is chemical composition.
Another way to identify minerals; it leaves the color of the powder behind when rubbed against a rough white tile.
What is streak?
The breakdown of rock through chemical reactions. (Forms new substances).
What is chemical weathering.
Limestone rock breaks down due to acid rain. This is an example of:
What is chemical weathering.
This type of igneous rock forms when lava cools on the Earth's surface.
What is Extrusive igneous rock?
For an Igneous rock to become a sedimentary rock, what needs to happen?
What is weathering, erosion, compaction, and cementation?
A naturally occurring, inorganic solid, that has a definite chemical composition and crystal structure.
What is a mineral?
When sediments stop moving (drop) and settle it is called:
deposition
Which is one characteristic that is ONLY true for minerals?
What is a definite chemical composition OR what is a definite crystalline structure.
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?
You can see this property just by looking at a mineral. Many minerals can be several of these.
What is color?
Rock is broken into smaller pieces by force. (Still the same rock).
What is physical weathering.
The wearing away of rock material by grinding action.
What is abrasion (physical weathering).