Weathering
two categories of weathering
chemical and physical/ mechanical
This type of wedging happens as a result of water freezing in a fracture.
What is Frost Wedging.
Grains of rock loosened by extreme heat and cold is caused by ...
What is Thermal expansion and contraction
rain, sleet, snow having high concentration of acids and break down rocks ny reacting chemically with the minerals
acid precipitation
This transforms rocks into new substances
chemical weathering
This process physically tears apart rock.
What is Mechanical Weathering
Rocks break apart with a clean cut or surface
frost wedging
The digging activity of animals
burrowing
When carbon dioxide dissolves in water this is formed.
What is carbonic acid
most important factor in weathering
climate
rain , water, acid rain, oxygen(air), animals and plants
agents of weathering
weathering of rocks by salt water from oceans, forms a honey comb structure
salt weathering
This crystal growth breaks rocks apart.
What is Salt
True or false: Carbonic acid by itself is harmful to plant or animal life.
False: When it is combined sulfur dioxide it creates acid rain, which will cause damage to trees to trees and wildlife.
This is the largest kind of particle
sand
copper turning a green color, what type of weathering?
chemical
Sheets of rock peeling of rock faces is called...
What is Exfoliation
This weathering occurs when rocks rub against each other
abrasion
Elements in rocks combine with oxygen for example iron forming rust
oxidation
the ____________the surface area the greater the rate of weathering
greater
weathering happens faster in
warm and humid climates
Rocks moved by rivers and streams , colliding with each other
abrasion
Mechanical weathering definition
the breakdown of rock or mineral without changing the chemical composition
The change in composition of minerals when they react chemically with water
hydrolysis
this process happens in chemical weathering to form caves
carbonation