Question

In which of the following climates is physical weathering due to frost action more prevalent?

Options

• Equatorial climates

• Polar climates

• Tropical climates

• Temperate climates

Answer 1

Polar climates

Explanation:

Physical weathering due to frost action (also known as freeze-thaw weathering) is more prevalent in polar climates. In these climates, the temperatures frequently fluctuate around the freezing point. When water enters cracks in rocks, it freezes at night, expanding and causing the rock to crack. During the day, as the ice melts, the water seeps deeper into the rock, and the cycle repeats, eventually breaking the rock apart. This process is most effective in regions where freezing and thawing cycles are common, which is typical of polar climates.