Weathering, Erosion, and Deposition
What is:
Breaking down of rock material through physical or chemical means.
Weathering
What is permeability?
How fast a liquid can pass through sediment
What is the strongest agent of Erosion?
Water
What is the main geological feature we see formed by wind erosion?
Sand dunes
What was the 2 reasons NYS needed rain gardens?
To stop overflow of the sewer system and decrease contamination of ground water.
What is:
The placing of Earth materials in a new location.
Deposition
What is Porosity?
The ability to hold liquid in the pores/spaces between sediment
What is hydrolysis in geology?
When rock materials are chemically altered by chemical reactions with water.
What are sediments?
A broken piece of rock that is found after weathering
What effects will building a large parking lot have on the amount of runoff experienced in that area?
Runoff will increased because the parking lot is impermeable
What is physical/mechanical weathering?
The breaking up of rock materials without altering the chemical makeup of the rock.
Which beaker would have the lowest percentage of porosity? Beaker A filled with Pebbles or Beaker B filled with Silt?
Beaker A
What is ice wedging?
Water freezes and expands inside cracks within rocks forcing the rock apart
What is abrasion in geology?
When rocks or sand moved by water or wind hit rocks and break or chip off parts of other rocks.
What process occurs when humans create new unsanctioned hiking trails?
What are three agents of erosion?
Moving water, gravity, wind, moving ice.
What kinds of sediments have the lowest permeability?
Clay and Silt because they are very small in size
What two rocks form from evaporation of water from a shallow sea? refer back to pg. 14 of your ESSRT
Gypsum and Rock Salt
What is wind deflation?
When the wind picks up small particles of Earth and carries them high into the air.
What is the difference between a debris slide and a mudslide?
In a mudslide, the weathered materials are smaller in size whereas debris slides contain larger sediment and sometimes trees and cars.
How might plants be an agent of weathering?
Roots might split apart rocks, fallen trees could break rocks, etc.
What sediment would allow groundwater contamination to spread the least?
clay or silt
What will the effects on the size of sediment being moved down a river be if a Dam were built up stream?
greater deposition of larger sediment and decreased stream velocity
What is one main factor that will determine whether or not wind and water will be a major factor of weathering and erosion in a given area?
How much vegetation/plant life there is in the area AND how fast the water is moving.
What will happen to the rate of dissolution of marble rock if humans were to increase atmospheric CO2
It would increase