APES Soils Review

Front

What is the layer of soil that contains most of the humus and soil organisms?

Back

The topsoil, also known as horizon A, contains most of the humus and soil organisms.

Front

What are the two main agents of erosion?

Back

The two main agents of erosion are wind and flowing water.

Front

What type of soil particle makes topsoil feel gritty?

Back

Sand makes topsoil feel gritty.

Front

What is the correct order of soil particles in increasing particle size?

Back

The correct order is clay, silt, sand.

Front

What is the process called when water gets into the cracks of rock and freezes, causing the rock to break?

Back

This process is called weathering.

Front

What is humus?

Back

Humus is the organic component of soil formed by the decomposition of plant and animal matter.

Front

What is the difference between erosion and weathering?

Back

Erosion involves the movement of soil and rock by wind, water, or ice, while weathering is the breakdown of rocks and minerals without movement.

Front

What is the role of soil organisms in the soil ecosystem?

Back

Soil organisms help decompose organic matter, recycle nutrients, and improve soil structure.

Front

What is the significance of soil horizons?

Back

Soil horizons are layers of soil that differ in color, texture, and composition, which affect plant growth and soil health.

Front

What is the impact of deforestation on soil erosion?

Back

Deforestation increases soil erosion by removing the protective cover of trees and vegetation.