Chapter 10: Weathering & Soil Formation

Process by which rock materials are broken down by the action of physical or chemical processes

• mechanical weathering
• chemical weathering
• weathering
• abrasion

Breakdown of rock into small pieces by physical means

• Chemical weathering
• mechanical weathering

___ is when water seeps into cracks of soil during warm weathering; then, when temperatures drop, the water freezes & expands, causing the cracks to widen.

• Frosting
• Ice cream
• Frost wedging
• Ice wedging

Grinding and wearing away of rock surfaces through the mechanical action of other rock & sand particles

• Weathering
• abrasion
• radioactivity
• erosion

Water, weak acids, and air are agents of _ weathering

• mechanical
• chemical
• physical

Ice, wind, water, gravity, plants, and animals are agents of _ weathering

• chemical
• mechanical

If you drop a ___ cube into water, it will dissolve.  This is __ weathering.

• ice; chemical
• sugar; mechanical
• ice; physical
• sugar; chemical

acid precipitation is rain, sleet, or snow that contains a low concentration of acids.

• True
• False

Acid precipitation causes very __ weathering.

• rapid
• slow

Oxidation is a chemical reaction during which an element, such as iron, combines with oxygen to form ____.

• rust
• heat
• an oxide
• lichens