1. Weathering and soil formation – section 2-1 Rocks and WeatheringB A
Mechanical weathering, chemical weathering
Mechanical
Freezing and thawing, release of pressure, growth of plants, actions of animals, abrasion
Grinding away of rock by other rock particles carried in water, ice, or wind
Chemical
Water, oxygen, carbon dioxide, living organisms, and acid rain
False C D E
true

2. Oxidation
Marble, limestone
Plants dissolve rock by producing weak acids around their roots.
Climate
True
Permeable
As water seeps through the spaces in the rock, it removes dissolved material formed by weathering.
It occurs more quickly because chemical reactions occur faster at higher temperatures.

3. Changing Earth’s Surface – 3-1
The process by which natural forces move weathered rock and soil from one place to another.
Gravity, glaciers, wind, running water, waves
Sediment
Deposition occurs where the agents of erosion lay down sediment.
a, b, c, d
False
True B D A C