Chapter 10 Weathering

type of frost action

chemical weathering causes a karst landscape, such as a cavern

lichens slowly break down a rock

Which of these is most likely to experience oxidation?
tennis ball
wooden fence
aluminum can
bicycle tire

process by which softer, less weather-resistant rocks wear away and leave harder, more weather-resistant rocks behind

Small rocks weather more quickly than large rocks because their surface area is

average weather condition in an area over a long period of time

Chemical weathering is most rapid

rocks are exposed to more wind, rain, and ice

Soil quality based on the relative size of soil particles

arrangement of soil particles called

organic material formed in soil from the decayed remains of plants and animals

removal from soil of substances that can be dissolved in water

a pH of 8 would be considered

climate has the most productive soil for raising crops

plow across the slope of hills

changing one steep field into a series of smaller, flatter fields

leaving old stalks to provide cover from rain in order to reduce water runoff and soil erosion

farmer plants different crops in order to use less nutrients or different nutrients from the soil

soil conservation technique George Washington Carver urged farmers to use

Ice, wind, water, gravity, plants, and animals

drop a sugar cube into a glass of water, the sugar cube will dissolve after a few minutes

arrangement of soil particles

increase the surface area of a rock, how will it affect the rate at which it weathers

proportion of different-sized particles in soil determines the soil’s

removal of substances that can be dissolved from rock or layers of soil due to the passing of water

wind blows sand and silt against exposed rock

oxygen in the air reacts with iron

oxygen in the air reacts with iron

soil conservation technique prevents erosion on steep hills by heavy rains

provides cover that reduces water runoff

conservation technique helps restore nutrients to the soil

conservation technique helps prevent erosion of sloping hills by heavy rains

of water’s properties directly causes mechanical weathering

decayed plant and animal material in soil

Rust is the oxidation of

breakdown of rock into smaller pieces by physical means

softer rocks wear away and leave harder rocks behind

soil that is blown or washed away from its parent rock

soil’s ability to hold nutrients and to supply nutrients to a plant

soil quality based on the proportion of different-sized soil particles

movement by wind, water, or gravity of soil from one place to another

the practice of leaving old stalks to provide cover from the rain

farmers plant different crops because they will use different soil nutrients