Which property of water helps in moderating Earth's climate and maintaining stable temperature in aquatic environment?

Correct answer: B. High specific heat capacity

  • A. Low viscosity
  • B. High specific heat capacity
  • C. High surface tension
  • D. High polarity

Explanation

A great deal of energy goes into breaking hydrogen bonds before the temperature of water rises, so oceans and lakes absorb and release heat with only small temperature changes and coastal climates stay mild. Polarity is the underlying cause of the hydrogen bonding, but the property that directly buffers temperature is the specific heat capacity. Surface tension matters for insects walking on water rather than for climate.

This question appeared on the UHS MDCAT 2025 paper, which you can sit online with every answer explained.

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About Biological Importance of Water

Water supports life through its polarity, hydrogen bonding and ability to dissolve ionic and polar substances. Its high specific heat, heat of vaporization, cohesion, adhesion and incompressibility help regulate temperature, transport materials and maintain structure, while hydrolysis and osmosis depend directly on water.

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