unit 6

3. capacity: How much water soil can hold. If soil holds too little, plants dry out.
5. remediation: Cleaning polluted soil so it can be used again. It helps make land healthy.
6. When water washes away nutrients from soil. This can leave plants without food to grow.
9. How many tiny spaces or holes are in soil. More holes = more air and water can pass.
11. How water moves down through soil. Think of how coffee filters water.

1. When water enters the soil. It’s like when rain sinks into the ground instead of forming puddles.
2. How fast water can move through soil. Sandy soil has high permeability because water passes quickly.
4. How much salt is in the soil. Too much salt can harm plants.
7. sampling: Taking small pieces of soil to test what it’s made of. For example, farmers use it to check if the soil is healthy for planting.
8. When soil gets packed too tightly. Heavy machines or too much walking on soil can cause this.
10. A measure of how acidic or basic soil is. Some plants grow better in certain pH levels.