Soil Layers/Soil Horizons Review

Front

What is humus?

Back

Organic matter that is formed from the decomposition of plant and animal material.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Front

What is soil composed of?

Back

A mixture of rock, mineral particles, and organic matter.

Front

What initiates soil formation?

Back

The weathering of bedrock.

Front

What is the O horizon in soil?

Back

The layer made of decaying leaves, twigs, and animal remains/wastes.

Tags

NGSS.MS-LS2-3

Front

What does the C horizon contain?

Back

Partially weathered rock.

Tags

NGSS.MS-ESS1-4

Front

What is the A horizon?

Back

The top layer of soil, rich in organic material and nutrients.

Tags

NGSS.MS-LS2-1

Front

What role does the B horizon play in soil?

Back

It is the layer where minerals leached from the upper layers accumulate.

Front

What is the significance of soil texture?

Back

Soil texture affects water retention, drainage, and nutrient availability.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-3

Front

What are the three main soil particle sizes?

Back

Sand, silt, and clay.

Front

How does soil pH affect plant growth?

Back

Soil pH influences nutrient availability and microbial activity.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4