Minerals
Igneous Rocks
Sedimentary Rocks
Metamorphic Rocks
The Rock Cycle
100
What is a mineral?
A naturally occuring, inorganic solid that has a definite chemical composition and and crystal structure.
100
How do Igneous rocks form?
When magma cools and hardens.
100
Sedimentery rocks are formed by..
Sediments being weathered, eroded, pressed and cemented together.
100
Metamorhpic rocks are formed by these two simple things
Heat and pressure
100
What are the 3 types of rocks?
Igneous, Metamorphic, Sedimentary
200
A minerals fractuce is the property shown when a mineral...
Breaks along a jagged, rough surface.
200
Igneous rocks are the only rocks that can be formed straight from...
Magma!
200
Sedimentery rocks are what precent of the rocks on Earth?
70% (take anywhere close to that)
200
These rocks are the rock of ______?
Change!
200
The rock cycle has no....?
Definite pattern or sequence!
300
Minerals formed from magma that takes a long time too cool and harden below the Earths surface will have what kind of crystals?
Large and visible
300
Igneous rocks were the first rocks on the Earth, how do we know this?
Because they are the only rocks made directley from magma.
300
These rocks are classified by their...?
Composition and texture.
300
Metamorphic rocks have to come from another _______ rock!
Existing!
300
What are the processes in the rock cycle?
cooling, heat and pressure, and melting
400
Name 3 mineral properties, and define them!
Streak- color left on a streak plate after rubbing a mineral across its surface Luster- the way a mineral reflects off of light Hardness- how easy it is to scratch a mineral (could be others)
400
Igneous rocks are formed into two different categories. What are they called, and what are they?
Extrusive- Igneous rocks formed above the earth's surface. Rock has small to no crystals visible. Intrusive- Igneous rocks formed below the earth's surface. Rock has large visible crystals.
400
Sedimentary rocks are seperated into 3 different groups, name what they're called, and what they are.
Clastic- rocks made from fragments or pieces of previously existing rocks Chemical- rocks formed from when a sea or lake dries up and leaves large amounts of dissolved minerals Organic- made from materials that were once living
400
Metamorphic rocks are seperated into 2 different types, name them, and what they are!
Folaited- when mineral crystals in metamorphic rocks are arranged in parallel Un-foliated- rocks that are not banded and do not drak into layers
400
An ________ in the Earths crust can cause the minerals in a rock to melt.
Increase
500
How can you determine if a rock is a diamond or not?
If it's hard enough to scratch all other crystals.
500
Name 2 types of Igneous rocks, and tell whether they are extrusive or intrusive.
Basalt- Extrusive Granite- Intrusive
500
It's very common to find what 7 letter word that begins with an F, in Sedimentery rocks.
Fossils!
500
Name 2 types of Metamorphic rocks and whether they are foliated or non-foliated.
Gneiss- foliated Marble- un-foliated
500
This is how rocks on the surface get pushed into the Earth's core.
Pressure
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