Crystal Winters
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?
Carbon-14 dating can only be done on this type of artifact.
What is organic (once living)
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?
Sediments are formed by this process, but your meteorologist has nothing to do with it.
What is weathering?
Uranium-238 changes into lead because the element is ________________, meaning it wants to change.
What is unstable (or radioactive).
The preserved remains of an organism or event are called _______________.
What is a fossil?
Name two ways people use rocks.
What is buildings, walls, roads, jewelry, decoration, countertops?
Small crystals in an igneous rock would indicate that the igneous rock cooled _________________.
What is quickly?
Heat and pressure can cause metamorphic change in rock but so can __________________________ like in Yellowstone.
What are hot water solutions?
In order to use radiometric dating, a rock must be _____________________.
What is igneous?
A naturally occurring, inorganic solid, that has a definite chemical composition and crystal structure.
What is a mineral?
What is the most powerful weathering agent?
What is water?
Obsidian, which cooled very quickly, is said to have this type of texture.
What is glassy?
For an Igneous rock to become a sedimentary rock, what 4 things need to happen?
What is weathering, erosion, compaction, and cementation?
What is relative time?
This mafic igneous rock is the most common type of rock found on the sea floor.
What is basalt?
Metamorphic activity changes a rock's _______________________________.
What is chemical formula or crystalline structure?
This determines the size of crystals that form in igneous rocks.
What is the cooling rate of the magma or lava?
Limestone that is composed of millions of sea shells is known as _________________________, but you won't find it in the health food store.
What is organic sedimentary rock?
An organic artifact can't be any older that this if you want to date it.
What is 40-50 thousand years old?
Igneous rock that has large crystals that cooled slowly surrounded by small crystals that cooled quickly.
What is porphyritic rock?
Limestone, when exposed to tremendous heat and pressure, will turn into _________________.
What is marble