Weathering and Erosion Crossword Puzzle

QUESTIONS LIST:

• cave : when limestone is dissolved underground, you get a...
• no till : leaving the previous season's stalks behind to prevent erosion.
• floodplain : sediment deposits here when a river overflows its banks (pg.318)
• oxidation : when water in the air causes chemical change
• topsoil : the top layer of soil
• parent rock : rock that is the source of the fragments
• wind : agent of mechanical weathering
• delta : deposition that occurs as a body of water slows to flow into another
• mechanical : what type of weathering breaks smaller pieces of rock from larger pieces
• acid rain : when pollution and rain weather together.
• cover crop : when farmers grow a crop between seasons to prevent erosion.
• crop rotation : when farmers change crops to protect nutrient depletion.
• plants : living agent of mechanical weathering
• abrasion : grinding away of rock
• differential : type of weathering in which harder rock weathers less than softer rock
• chemical : what type of weathering slowly dissolves rock
• deposition : when water slows and drops sediment
• porosity : refers to the pore space in soil taken up by water or oxygen
• humus : the most fertile section of topsoil
• leaching : water dissolves and carries nutrients in topsoil to lower layers
• erosion : what is the process in which wind, water, gravity transport soil?
• terracing : creating a series of steps so that farming can occur on a steep hill
• rounder : as a mountain ages, its peaks become (rounder/sharper)
• water : agent of chemical weathering
• bedrock : the layer of rock beneath soil layers