Water and Wind Erosion
Pre-Test Active
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Which features help reduce the amount of runoff that occurs in an area?
O hard soil
steep slopes
O paved surfaces
O increased vegetation
Increased vegetation
The features that help reduce the amount of runoff that occurs in an area are increased vegetation and paved surfaces.
To determine which features help reduce the amount of runoff in an area, we need to understand the process of runoff and how different factors affect it.
Runoff refers to the water that flows over the surface of the land instead of seeping into the ground. It occurs when rainfall or melting snow exceeds the soil's ability to absorb it. Runoff can cause erosion and carry pollutants into nearby water bodies.
Now, let's look at the options given:
1. Hard soil: Hard soil has a lower capacity to absorb water, which means that it can contribute to increased runoff rather than reducing it. So, hard soil does not help reduce the amount of runoff.
2. Steep slopes: Steep slopes can promote fast and direct flow of water, increasing the chances of runoff. Therefore, steep slopes do not help reduce the amount of runoff.
3. Paved surfaces: Paved surfaces, such as roads, driveways, and sidewalks, are impermeable to water. This means that they prevent water from infiltrating into the ground, resulting in increased surface runoff. Paved surfaces do not help reduce the amount of runoff.
4. Increased vegetation: Vegetation, such as trees, grass, and shrubs, plays a significant role in reducing runoff. When it rains, vegetation intercepts and reduces the force of falling drops, allowing more water to be absorbed by the soil. Additionally, roots help create pore spaces in the soil, increasing its ability to hold water. Therefore, increased vegetation helps reduce the amount of runoff.
In summary, out of the given options, increased vegetation is the feature that helps reduce the amount of runoff that occurs in an area.