Multiple choice

What impact does weathering have on soil formation?

  1. Chemical weathering adds helpful chemicals to the soil

  2. Mechanical weathering adds ice to soil; then into water

  3. Rocks are broken down into small pieces; then into sediment

  4. Volcanic eruptions contribute metamorphic rocks to the soil
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Soil is primarily composed of tiny rock particles, organic matter, water, and air. Weathering breaks down larger rocks into smaller fragments and sediment, which serves as the foundational mineral component of soil. Without this breakdown of rock, soil cannot develop.

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