Igneous Rocks
SedimentaryRocks
Minerals
Metamorphic Rocks
Random
100
What cools cools and hardens to form igneous rock.
Magma or lava
100
What do we call little pieces of rocks, pebbles, mineral grains, and shell fragments that eventually form rocks?
sediments
100
What do we call the way light reflects off of a mineral?
Luster
100
How do metamorphic rocks form?
heat and pressure to an igneous or sedimentary rock.
100
The process of rocks changing from one kind of rock to another kind of rock over long periods of time is called the....
Rock cycle
200
What do we call molten rock that cools above the Earth's surface?
Lava
200
What do we call sedimentary rock that forms from the remains of plants and animals?
Organic Sedimentary rock
200
What do we call the scale that is used to measure the hardness of minerals?
Moh's Hardness Scale
200
What conditions form foliated metamorphic rocks?
Directed Pressure
200
True/False :A rock must become sedimentary, then igneous, then metamorphic to go through the rock cycle. *DOUBLE POINTS IF YOU CAN REWRITE THIS STATEMENT CORRECTLY*
There are many paths a rock can take through the rock cycle, There is not one set path.
300
What type of igneous rock forms when lava cools on the Earth's surface?
Extrusive igneous rock
300
What is the deposition environment where limestone is formed?
water-lake/ocean
300
What do we call it when a mineral leaves powder behind when rubbed against a rough white tile?
Streak
300
What is a parent rock?
The rock you begin with before metamorphism.
300
What is the difference between cleavage and fracture?
Cleavage is a break on a smooth surface, fracture is an uneven break
400
Where does igneous rock with large crystals form?
Under the Earth's surface.
400
What is the depositional environment where sandstone is formed?
Sandy area-beach
400
What are three characteristics of minerals?
Natural, definite chemical composition, solid, inorganic, crystal structure.
400
Uniform pressure forms which type of rock?
Non-Foliated
400
A rock that cools from lava is different from a rock that cools from magma because....
A rock that cools from lava takes a shorter amount of time to cool than a rock that forms from magma.
500
What do we call an igneous rock that is light in color with an high silica content?
Felsic igneous rock
500
Explain why fossils are only found in sedimentary rocks?
The conditions that form igneous and metamorphic rocks are too extreme (too much heat and pressure) to preserve the rocks. Also, fossils form when an organism is quickly buried by sediments that later become rock.
500
What is the main difference between a rock and a mineral?
Rocks are made of minerals
500
Explain the difference between how foliated and non-foliated rocks form.
Foliated had directed pressure while forming causing them to form bands or layers. Non-Foliated had uniform pressure while forming so there are no bands or layers.
500
A rock is considered fine-grained when it has...
small crystals
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