1.
- What is the upper layer of the Earth where plants grow called?
2.
- What is the organic component of soil formed by the decomposition of leaves and other plant material called?
3.
- What is the top layer of soil, rich in organic material, called?
4.
- What is the layer of soil beneath the topsoil called?
5.
- What is the solid rock underlying the soil layers called?
6.
- What is the process of nutrients being washed out of the soil by rain called?
7.
Profile - What is the vertical section of soil from the surface to the bedrock called?
8.
- What type of soil is made up of very small particles and retains water well?
9.
- What type of soil has large particles and drains water quickly?
10.
- What type of soil has particles smaller than sand but larger than clay?
11.
- What is a mixture of sand, silt, and clay that is considered ideal for growing plants called?
12.
- What scale is used to measure the acidity or alkalinity of soil?
13.
- What term describes the ability of soil to provide nutrients for plant growth?
14.
- What is the process of soil being worn away by wind, water, or other natural forces called?
15.
- What is decayed organic material used to enrich soil called?
16.
- What term describes how well water moves through soil?
17.
- What is the process by which fertile land becomes desert called?
18.
- What is the practice of growing different types of crops in the same area in sequential seasons called?
19.
- What is the agricultural practice of creating stepped levels on slopes to prevent erosion called?
20.
- What is the term for when animals eat too much vegetation, damaging the soil?
21.
- What is the term for when the same crop is grown repeatedly on the same land, depleting the soil nutrients?
22.
Material - What is the underlying geological material in which soil forms called?
23.
- What term describes soil that is saturated with water and lacks proper drainage?
