Question

When water collects in cracks of rocks, the water freezes and expands, causing the cracks to widen. Eventually, over time, this causes the rock to break apart into smaller pieces. What is this type of weathering process known as?

A) Carbonation
B) Ice Wedging
C) Animal Action
D) Abrasion
E) Oxidation
F) Exfoliation
G) Lichen/Moss
H) Acid Precipitation
I) Plant Growth
J) Chemical Weathering
K) Physical (Mechanical) Weathering

Answer 1

The weathering process where water freezes in rock cracks, leading to the rock breaking apart, is known as Ice Wedging, a type of Physical (Mechanical) Weathering.

Step-by-step explanation:

The type of weathering process described, where water collects in cracks of rocks, freezes, and expands, eventually causing the rock to break apart, is known as Ice Wedging. This process is a form of Physical (Mechanical) Weathering because it involves the physical break down of rocks without chemical changes. Ice wedging is particularly effective in areas with frequent temperature fluctuations around the freezing point.

Examples of Physical Weathering

• Bryce Canyon's unique rock formations are a result of ice wedging combined with chemical weathering.
• In Iceland, visible effects of freezing and thawing on rocks demonstrate the power of ice wedging.

Over time, weathering and erosion contribute to the formation of soil and shaping of the Earth's surface, providing necessary minerals for ecosystems.