Use with Chapter 7 Soil Formation - Science with Mrs. Lambert

Teaching Transparency

Bedrock

C horizon

B horizon

A horizon

Stage 3. Weathering and organic decay continue. Water leaches soluble minerals downward from the A horizon, and a mineral-rich B horizon forms.

Soil Formation

Bedrock

C horizon

A horizon

Stage 2. Weathering of rock pieces continues. Organisms living in the weathered material die and decay, forming an organic-rich top layer, or A horizon.

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Bedrock

C horizon

Stage 1. Weathering breaks solid bedrock into smaller pieces, forming the C horizon.

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MASTER TEACHING TRANSPARENCY Use with Chapter 7 Section 7.3

Transparency Master 18 Earth Science: Geology, the Environment, and the Universe

35

Name WORKSHEET

Class

18

Date

TEACHING TRANSPARENCY

Soil Formation

Use with Chapter 7 Section 7.3

1. What occurs at the beginning of the soil formation process?

2. Are weathered rocks the only components needed to form soil?

Explain your answer.

3. Is the soil shown a residual soil or a transported soil? Explain your answer.

4. Which horizon contains the least-weathered parent material?

Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.

5. What occurs during the second stage of soil formation?

6. Which is the last horizon to form, and how does it form?

7. What process occurs during all three stages?

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Transparency Worksheet 18 Earth Science: Geology, the Environment, and the Universe

Teaching Transparency