Soil Horizons

Soil Horizons

Assessment

Flashcard

Science

6th - 10th Grade

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is Horizon O in soil?

Back

Horizon O, also known as the organic layer, is the topmost layer of soil, composed mainly of organic matter such as decomposed leaves and other plant material.

2.

FLASHCARD QUESTION

Front

What is Horizon A in soil?

Back

Horizon A, or topsoil, is the layer beneath Horizon O, rich in nutrients and organic matter, and is crucial for plant growth.

3.

FLASHCARD QUESTION

Front

What is Horizon E in soil?

Back

Horizon E, known as the eluviation layer, is characterized by the leaching of minerals and nutrients, resulting in a lighter color.

4.

FLASHCARD QUESTION

Front

What is Horizon B in soil?

Back

Horizon B, or subsoil, is the layer that accumulates minerals and nutrients leached from the upper layers, often denser and less fertile.

5.

FLASHCARD QUESTION

Front

What is Horizon C in soil?

Back

Horizon C, or parent material, consists of weathered rock and minerals from which the soil develops.

6.

FLASHCARD QUESTION

Front

What is Horizon R in soil?

Back

Horizon R, or bedrock, is the solid rock layer beneath all soil horizons, providing the foundation for soil formation.

7.

FLASHCARD QUESTION

Front

Which soil horizon contains the most humus?

Back

Horizon O contains the most humus due to the accumulation of decomposed organic matter.

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