chapter 27 Flashcards
process that involves the physical or chemical breakdown of materials on earths surface
weathering
mixture of weathered rock, organic matter, water, and air that is capable of supporting plant life
soil
removal of surface material through the process of weathering
erosion
land area that gathers water for a major river is called rivers
drainage basin
movemoent of water parallel to the shoreline
longshore current
rocks weather ersional agents like water, ice, wind, and gravity move eroded from one material from one place to another in a process
sediment transport
the erosinal agent slows down it drops this sediment load in a process
depostion
weathering definition?
the process the involves the physical or chemical breakdown of materials on earth’s surface
do rocks weather at the same rate?
no
what are the two main factors that determine how fast a rock will weather?
rock type
landscape
what are the two types of weathering?
mechanical or chemical
what type of change happens with mechanical weathering?
physical changes
what type of change happens with chemical weathering?
chemical changes
what are the 3 specific types of mechanical weathering?
frost wedging
biological activity
collisions
what causes frost wedging?
when water collects in the cracks of rocks and freezes
what causes biological activity?
plants and animals
what causes weathering during collisions?
when rocks fall from a cliff or trumble through trubulent rivers
what are the 2 types of chemical weathering caused by?
oxygen and water
what is the chemical process called that is caused by oxygen?
oxidation
what is chemical process called that is caused by water?
hydrolysis
soil definition?
a mixture of weathered rock, organic matter and air that is capable of supporting life
what is parent material?
the material from which soil
what are soil horizons?
different layers of soil
how many soil horizons are there?
6
