What is the R Horizon?
Soil Horizons Flashcard

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•
Biology
•
11th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The R Horizon, also known as the bedrock layer, is the unweathered rock layer beneath the soil horizons.
2.
FLASHCARD QUESTION
Front
What is the A Horizon?
Back
The A Horizon, commonly referred to as topsoil, is the uppermost layer of soil that is rich in organic material and nutrients.
3.
FLASHCARD QUESTION
Front
What is the B Horizon?
Back
The B Horizon, also known as subsoil, is the layer of soil beneath the A Horizon that accumulates minerals leached from the upper layers.
4.
FLASHCARD QUESTION
Front
What is the C Horizon?
Back
The C Horizon consists of weathered rock and soil material that is in the process of forming into soil.
5.
FLASHCARD QUESTION
Front
What is weathering?
Back
Weathering is the process by which rocks are broken down into smaller particles through exposure to elements like water, air, and temperature changes.
6.
FLASHCARD QUESTION
Front
What is erosion?
Back
Erosion is the process by which soil and rock are removed from one location and transported to another, often by wind, water, or ice.
7.
FLASHCARD QUESTION
Front
What is the O Horizon?
Back
The O Horizon is the topmost layer of soil, primarily composed of organic matter such as decomposed leaves and other plant material.
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