Does slope affect the rate of weathering?

Slope The steep sides of mountains and hills make water flow down them faster. Fast-moving water has more energy to break down rock than slow-moving water. Therefore rocks on steep slopes can weather faster than rocks on level ground.

What factors affect the rate of weathering?

Rainfall and temperature can affect the rate in which rocks weather. High temperatures and greater rainfall increase the rate of chemical weathering. 2. Rocks in tropical regions exposed to abundant rainfall and hot temperatures weather much faster than similar rocks residing in cold, dry regions.

What is the relationship between weathering and slope failure?

In general terms, studies on weathering-related landslides showed that in the less weathered rock volumes joints preferentially control the occurrence of instability phenomena such as rock falls and toppling failures, whereas in soil-like terrains failures are generally controlled by the interactions between the …

What are 4 factors that affect weathering?

Factors affecting weathering

rock strength/hardness.
mineral and chemical composition.
colour.
rock texture.
rock structure.

Aug 5, 2015

How does slope angle affect slope stability?

The stability of the slope decreases as the slope inclination increases from 26.56° to 55° and less water infiltrates the slope. For Soil-1, the safety factor decreases from 2.013 to 1.394.

What causes slope failure?

Slope failures occur when driving forces overcome resisting forces. The driving force is typically gravity, and the resisting force is the slope material's shear strength. When assessing a slope's stability look for indications that physical processes are decreasing shear strength.

What are the rates of weathering?

The weathering rate for rocks depends on the composition of the rock; the climate of the area; the topography of the land; and the activities of humans, animals, and plants. A rock's composition has a huge effect on its weathering rate. Rock that is softer and less weather-resistant tends to wear away quickly.

What factors affect the rate of weathering quizlet?

The two factors that affect the rate of weathering are the rock's type and the climate. If a rock is permeable, it weathers easily. The mineral content of the rocks influence how fast it would weather. There are minerals which dissolve easily in particular substances.

How does surface area affect the rate of weathering?

Large rocks have less surface area for their volume than small rocks. Therefore a smaller portion of the rock is exposed to weathering. It takes longer for the rock to wear away. The small rock has more surface area for its vol- ume so it weathers away faster.

How does slope angle affect landslides?

Because slopes with high angle form from rock units and the thickness of the weathering zone increases in low-angle slopes, it is thought that slopes with this slope are more susceptible to landslides.

How does slope aspect affect landslide?

(107) found that in the study areas, the slopes are more north-oriented and again, landslides occur mostly in this direction. They stated that these slopes are more humid with the effect of aspect, while the temperature and evaporation are low on the slopes facing north, and the soil moisture is high.

What causes slope?

Slope movement occurs when forces acting down-slope (mainly due to gravity) exceed the strength of the earth materials that compose the slope. Causes include factors that increase the effects of down-slope forces and factors that contribute to low or reduced strength.

Which condition leads to a slower rate of weathering?

CLIMATE: The amount of water in the air and the temperature of an area are both part of an area's climate. Moisture speeds up chemical weathering. Weathering occurs fastest in hot, wet climates. It occurs very slowly in hot and dry climates.

How does topography affect weathering?

Weathering The rate of weathering happens on mountains in the same way it does everywhere else. However, rocks at higher elevations, are exposed to more wind, rain, and ice than the rocks at lower elevations are. This increase in wind, rain, and ice at higher elevations causes the peaks of mountains to weather faster.

How does surface area affect the rate of erosion?

Large rocks have less surface area for their volume than small rocks. Therefore a smaller portion of the rock is exposed to weathering. It takes longer for the rock to wear away. The small rock has more surface area for its vol- ume so it weathers away faster.

How do slopes cause landslides?

Water can trigger landslides and mudslides because it alters the pressure within the slope, which leads to slope instability. Consequently, the heavy water-laden slope materials (soil, rock, etc.) will succumb to the forces of gravity. Excessive water is thought to be one of the most common triggers for landslides.

What is slope in landslide?

Almost every landslide has multiple causes. Slope movement occurs when forces acting down-slope (mainly due to gravity) exceed the strength of the earth materials that compose the slope. Causes include factors that increase the effects of down-slope forces and factors that contribute to low or reduced strength.

How does water move on a slope?

5:256:29How does water move on a slope? – YouTubeYouTube

How does the slope of the soil affect its stability?

Since water is heavier than air, this increases the weight of the soil. Weight is force, and force is stress divided by area, so the stress increases and this can lead to slope instability. Water has the ability to change the angle of repose (the slope angle which is the stable angle for the slope).

Which condition leads to a slower rate of weathering quizlet?

The dry climate promotes a slower rate of weathering.

How does elevation affect the rate at which rock weathers?

How does elevation affect the rate at which rock weathers? Rocks at higher elevations are exposed to more rain, wind, and ice than those rocks at lower elevations. This causes the rocks to weather faster. Gravity also affects weathering at higher elevations.

Which slope has the highest erosion rate?

northern slopes The greatest erosion rates were at upper positions on northern slopes, and upper positions on south slopes had relatively lower erosion rates.

How does surface area affect weathering rate?

The rate of weathering increases because the surface area-to-volume ratio of the small rocks is greater than that of the large rock. So a greater proportion of a smaller rock is exposed to weathering processes.

Does weathering cause landslides?

Erosion is the process of transporting weathered material, and weathering is the actual wearing down of that material. Weathering is an important factor in landslides; heavily weathered landscapes are much more likely to be eroded.

How does slope affect infiltration?

The results show that, under the condition of equal horizontal projective lengths so that all slopes receive the same amount of rainfall, infiltration increases with increasing slope gradients and runoff decreases.

What types of slopes allow water to infiltrate most easily?

Terms in this set (32) The steeper the slope, the less infiltration and more runoff. The greater the soil is saturated with water, the less infiltration and the more runoff. The more permeably the ground, the more water that can infiltrate and the less runoff.

How does slope prevent soil erosion?

Techniques for steep slopes include wood retaining walls, interlocking concrete blocks, rock retaining walls, riprap (loose rock) areas, and terracing. If you choose wood, make sure the wood is treated with a wood preservative to prevent rotting.

What is an slope?

Slope is the steepness of a line as it moves from LEFT to RIGHT. Slope is the ratio of the rise, the vertical change, to the run, the horizontal change of a line. The slope of a line is always constant (it never changes) no matter what 2 points on the line you choose.

What happens if too much rain falls on a mountain slope or if soil on a mountain slope becomes saturated by water?

What happens if too much rain falls on a mountain slope or if soil on a mountain slope becomes saturated by water? The soil particles can wash away and lead to mass wasting.