Igneous
What are igneous rocks made of?
Cooled magma or lava
What is weathering?
When wind and water wear apart a rock into smaller pieces
What is needed for metamorphic rocks to form?
Heat and pressure
What is a rock?
A naturally occurring solid made of minerals
Name the 3 groups of rocks.
Igneous, sedimentary and metamorphic
How do fine grained igneous rocks form?
When magma cools quickly
What a strata?
1 layer of rock
What are the two groups of metamorphic rocks?
Foliated and Nonfoliated
How did people in the past use rocks?
Tools, weapons, shelters
What is erosion?
Moving sediment to another location
What are intrusive igneous rocks?
When magma cools inside the crust
What is stratification?
The process of being put into layers
What does foliated metamorphosis look like?
Rock with lines or bands of minerals- STRIPES
What is texture?
Size, shape, and grain of a rock
What is the rock cycle?
When rocks change from one kind to another over and over
What are extrusive igneous rocks?
When lava cools on the outside surface of Earth
What is organic? Which type of rock are these rocks?
Living and fossils are this kind.
What does nonfoliated metamorphosis look like?
No bands but SPARKLES with minerals
What is composition?
Chemical makeup of the rock
How are rocks classified?
Type of rock, composition, and texture
Tell the 3 ways magma forms.
When rock is heated, pressure is released ,and the composition of the rock changes
Name the 3 types of sedimentary rocks.
Clastic, Chemical, and Organic (Biochemical)
What happens to minerals under heat and pressure?
The minerals become more stable (recrystallization)
What is deformation?
A change in a rock because of a force put on it. Rocks can stretch, bend, or be squeezed
Name the steps in the rock cycle in order.
Weathering, Erosion, Deposition, Cementation, Heat and Pressure