Metamorphic Rocks
The process in which an existing rock is changed by heat or pressure or both.
metamorphism
An arrangement of minerals in flat or wavy parallel bands.
Foliation
The process in which natural forces break down
weathering
What is not changed during mechanical weathering
What is Sergio Teacher's favorite color?
Green
What is a parent rock?
The original sedimentary or igneous rock. Remember a metamorphic rock can be a parent to to other metamorphic rocks.
Slate is used for tiles because???
I can be split into thin sheets along the boundaries between its flat bands of minerals.
When water freezes in cracks and pores of rocks that cause splits in the rocks.
Ice wedging
Plants growing in cracks in a rock is a form of what type of weathering. Is it mechanical or chemical?
Plant root growth
trick question! None!
I have two violent sisters
What do rocks not do during metamorphism?
melt
What two things need to be present for metamorphic changes to happen over large areas.
High temperature and pressure.
What causes chemical weathering?
When minerals in rocks come in contact with air and water.
Remember that water is the main catalyst of chemical weathering.
What is an example of abrasion a type of mechanical weathering?
If you see Sergio Teacher at a coffee shop what is going to order?
Iced Americano
When atoms in minerals are broken and then joined together differently is called what?
recrystallization
Why is marble used for sculpting and carving?
It is nonfoliated and is not easily split into layers as the artist is working on it.
What element is needed to begin the process of rusting
Iron
What three things affect the rate in which weathering occurs?
surface area
rock composition
climate
What is Sergio Teachers favorite outdoor activity?
Hiking
What are the two results of recrystallization
Minerals can grow larger as more atoms join their crystal structures. Atoms can combine in different ways which form new minerals in place of others.
What are the mineral arrangements in foliated rocks and non foliated rocks?
Foliated rocks- lined up in bands
nonfoliated- not aligned/random
How can mechanical weathering affect the rate of chemical weathering?
mechanical weathering can expose more of a rocks surface area which allows chemical weathering to affect more of a rock.
What two things need to combine to form acidic rain?
water and carbon dioxide
What state is Sergio Teacher from?
Colorado