Two weathering agents that affect freeze thaw action?

Question: Two weathering agents that affect freeze thaw action?

The two weathering agents that affect freeze-thaw action are:

1. Water: Water is the primary weathering agent involved in freeze-thaw action. When water seeps into cracks and pores in rocks, it can freeze during cold temperatures. As water freezes, it expands, exerting pressure on the surrounding rock. This expansion can cause the cracks to widen and the rock to break apart.

2. Temperature variations: Temperature plays a crucial role in freeze-thaw action. Alternating freezing and thawing cycles are necessary for this type of weathering to occur. Regions with significant temperature fluctuations, particularly between below freezing and above freezing conditions, are conducive to freeze-thaw action. During freezing, the water in the cracks expands, and during thawing, the water contracts. These repetitive cycles of expansion and contraction weaken the rock, leading to its gradual breakdown over time.

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