A mineral must have 5 properties to be classified as a mineral. Naturally occurring is one of them? Name the other 4.
What inorganic, must be a solid, have a crystal structure, and a definite chemical composition.
100
Igneous rocks come from what destructive force in nature?
What are volcanoes
100
What is a sediment?
small pieces of material that come from rocks, plants, shells, bones, leaves, stems, and other materials.
100
How are metamorphic rocks formed?
What is heat and pressure deep inside the earth?
100
What are the 3 types of changes that can happen to rocks as they move through the rock cycle?
Heat and pressure
sediment and compaction
melting and crystallization
200
What does inorganic mean?
It cannot come from something that was once a living thing.
200
Igneous rocks are classified according to what 3 categories?
What are origin, texture, and mineral composition?
200
There are 4 processes that form sedimentary rocks. One of them is erosion. What is erosion?
Erosion is the constant breaking up and wearing away of rocks on earth by destructive forces such as heat , cold, rain, waves, wind, and ice.
200
Geologist classify metamorphic rocks as either foliated or nonfoliated. What does foliated mean?
When a metamorphic rock has its grains arranged in flat parallel layers. Examples are mica and other rocks that split easily.
200
What is the rock cycle?
The rock cycle is a series of processes on and inside the earth that slowly change rocks from one kind to another.
300
When particles of a mineral line up in a pattern that repeats over and over it is called what?
What is a crystal structure?
300
An igneous rock that is formed from lava erupting onto the earth's surface is called what type of rock?
What is extrusive?
300
Another process that forms sedimentary rocks is deposition. What is deposition?
The destructive forces carry away sediments and deposit or drop them elsewhere.
300
What does nonfoliated mean?
When the grains of metamorphic rocks line up randomly
300
How can a metamorphic rock change into a sedimentary rock?
a) erosion and deposition
b) melting and crystallization
c) heat and pressure
d) all of the above
d) all of the above
400
On the Moh's hardness scale for testing minerals, what mineral is the hardest at #10?
What is diamond.
400
An igneous rock that is formed when magma hardens beneath the earth's surface is called what type of rock?
What is intrusive?
400
Compaction is another process of sedimentary rocks. What is it?
It presses the sediment layers together squeezing them tightly together.
400
Which of these is a metamorphic rock? sandstone
granite, gneiss
What is gneiss?
400
In the rock cycle, the process by which an igneous rock changes to a sedimentary rock must begin with:
a) cementation
b) deposition
c) erosion
d) compaction
What is erosion
500
There are 7 properties that are tested to identify minerals. Color and streak are two of them. What are the other 5?
What are luster, density, hardness, crystal systems, and cleavage/fracture.
500
What type of igneous rock has been used for thousands of years for statues built by ancient Egyptians and countertops in kitchens and baths today?
What is granite?
500
Name the 3 types of sedimentary rocks?
What are clastic, organic, and chemical?
500
The statue of Abraham Lincoln in the Lincoln Memorial in Washington, DC is made of what metamorphic rock?
What is marble?
500
An igneous rock containing large crystals is mostl likely
a) chemical rock
b) extrusive rock
c) foliated
d) intrusive rock