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Creado por un usuario eliminado
hace casi 8 años
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Copiado por Nick Stoner
hace alrededor de 7 años
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Pregunta | Respuesta |
Occurs when water seeps into cracks in rocks, freezes, expands and breaks off pieces of rocks. | Frost wedging |
Process of rock being eroded away from above an igneous rock body | Unloading |
When rock changes into one or more new compounds | Chemical weathering |
When rocks or rock fragments fall freely through the air. | Rockfalls |
A block of material moves suddenly along a flat, inclined surface | Slide |
Downward movement of a block of material along a curved surface | Slump |
Slowest type of mass movement | Creep |
Type of climate that has the greatest chemical weathering | Warm and wet |
The 4 main components of soil | Air, water, organic matter, mineral matter |
Most organic matter in soil comes from where? | Plants |
Layer below the C horizon | Parent material |
Five factors that affect soil formation | Time, parent material, climate, organisms, slope |
Slope with an angle 25 to 40 degrees | Oversteeped slope |
Loose partially decayed organic matter and mineral matter | A horizon |
Clay and nutrients transferred from the layer above | B Horizon |
Partially weathered parent material | C Horizon |
How are chemical and mechanical weathering related? | Mechanical weathering breaks rock into smaller pieces. These smaller pieces have a greater combined surface area so they will weather chemically quicker. |
The four triggers of mass movment | Water, oversteepened slopes, removal of vegetation, earthquakes |
What will happen to a slope if the vegetation is removed from it? | The slope is more likely to have mass movements. |
When different parts of a rock weather at different rates. | Differential weathering |
Three factors that affect the rate of weathering | Rock characteristics, climate, amount of exposed area |
How will a soil that has been forming for 10 years look compared to one that has been forming for 100 years? | The soil that has been forming longer, will be thicker. |
What is the main driving force behind all mass movements? | Gravity |
Which directions do mass movements occur? | Downslope |
Rocks are broken into smaller pieces, but they don't chemically change. | Mechanical weathering |
Transfer of rock and soil downslope due to gravity. | Mass movement |
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