Weathering, Soil, and Erosion
describe some ways that human activities affect weathering processes.
highways, construction,destruction of forests, and set forest fires
what rock material are found in soil
the main rock materials found in soil are sand silt and clay
what is hydrolysis and how is it involved in chemical weathering
Hydrolysis is a chemical reaction between a mineral and water. Water can split into Hydrogen ions. These ions can then react with ions within the mineral and breaking down the mineral.
describe the differences between residual soil and a transported soil
Residual soil is soil that becomes soil in place. Transported soil is soil that was moved from one place to another by wind or water.
how and were does salinization occur
Salinization is the process by which water-soluble salts gather in the soil. Salinization is a concern because too much salts limits the ability of the crops to take in water.
how are ice and water involved in mechanical weathering.
Water can work its way into cracks in rocks and overtime freeze and brake the rock open. When water freezes it turns into ice.
how do you think the type of soil found in a particular region might affect the lives of people living in the region.
if the soil does not have much nutrition you cant farm the land. you could also inhale dust which could be bad for your lungs.
explain how the climate of a region affects erosion and topography.
A wet and windy climate causes erosion to occur at a faster rate than a very dry and calm climate
explain how oxygen is connected to chemical weathering.
Oxygen is an oxidizer. The atoms will bind with almost any other element and in that process of binding it creates an oxide of that element.
identify three factors that control the rate at which a rock weathers.
Composition Density Environment
how do gravity and friction affect rocks on earth on a mountain slope
Gravity and friction are two of the main forces affecting rock fall and rock slides
explain how terrace farming could also increase the amount of land available for farming.
It doesn't increase the amount of land per, but it decreases the rate at which soil is lost through erosion.
how is upward expansion related to mechanical weathering
Long curved breaks and mechanical weathering in granite can be caused by upward expansion.
explain what the term mass movement means
Mass movement is the movement of surface material caused by gravity. an example is landslides
compare mechanical and chemical weathering.
mechanical weathering is when the rocks are physically broken down and chemical weathering is when the rocks are chemically broken down.
describe some ways to prevent soil depletion
spreading fertilizer, watering their crops, animal manure, soil nutrients,and by crop rotation.
