Earth Science Weathering and Erosion
12.1 Weathering 1-7
Mechanical and chemical weathering are different because mechanical is when a rock is split and then worn down by the elements, and chemical weathering is when different minerals and substances are changed in a rock.
Ice and water are involved in chemical weathering because the water soaks into the cracks of the rock and then it freezes and expands so the rock is split more.
Upward expansion is related to mechanical weathering because when the rocks are lifted up they become exposed to the elements and eventually get worn away.
Hydrolysis is when common minerals are exposed to water, they dissolve into ions. Chemical weathering is related to hydrolysis because the minerals are being turned into other substances.
Oxygen is connected to chemical weathering because minerals that contain iron will turn brown over time when exposed to oxygen, this is called oxidation.
Three factors that control the rate at which a rock weathers are surface exposure, composition of rock, and climate.
The weathering process that takes place in a dry region and a humid region is that in a dry region, the wind and sand that are blowing on a rock might wear it down, but in a humid region the water will eventually wear down the rock.
12.2 Soils 1-5
The difference between residual soil and transported soil is that residual is a soil who’s parent is bedrock but transported soil is any soil that is formed from transported materials.
A horizon- usually fine particles of weathered rock
B Horizon- Clay, Iron oxides, and dissolved minerals that came from the A-HorizonC Horizon- Partially weathered parent materials.
3. Rock materials that are found in soil are sand, silt, and clay. 4.The amount of rainfall affects the soil in different areas because the more water there is, the more that the soil becomes a tropical forest, but the less rain there is the more it becomes a grassland. 5. The type of soil in a particular region might affect
Mechanical and chemical weathering are different because mechanical is when a rock is split and then worn down by the elements, and chemical weathering is when different minerals and substances are changed in a rock.
Ice and water are involved in chemical weathering because the water soaks into the cracks of the rock and then it freezes and expands so the rock is split more.
Upward expansion is related to mechanical weathering because when the rocks are lifted up they become exposed to the elements and eventually get worn away.
Hydrolysis is when common minerals are exposed to water, they dissolve into ions. Chemical weathering is related to hydrolysis because the minerals are being turned into other substances.
Oxygen is connected to chemical weathering because minerals that contain iron will turn brown over time when exposed to oxygen, this is called oxidation.
Three factors that control the rate at which a rock weathers are surface exposure, composition of rock, and climate.
The weathering process that takes place in a dry region and a humid region is that in a dry region, the wind and sand that are blowing on a rock might wear it down, but in a humid region the water will eventually wear down the rock.
12.2 Soils 1-5
The difference between residual soil and transported soil is that residual is a soil who’s parent is bedrock but transported soil is any soil that is formed from transported materials.
A horizon- usually fine particles of weathered rock
B Horizon- Clay, Iron oxides, and dissolved minerals that came from the A-HorizonC Horizon- Partially weathered parent materials.
3. Rock materials that are found in soil are sand, silt, and clay. 4.The amount of rainfall affects the soil in different areas because the more water there is, the more that the soil becomes a tropical forest, but the less rain there is the more it becomes a grassland. 5. The type of soil in a particular region might affect