39. Which of the following characteristics of water helps explain why coastal areas experience less dramatic temperature changes during the day than more inland areas?
Answer: C
Water has a high specific heat capacity.
The high specific heat capacity of water means that it can absorb and store large amounts of heat without experiencing significant changes in temperature. This property helps to moderate temperature fluctuations in coastal areas compared to inland regions.
A) Water's adhesive properties prevent evaporation.
While water's adhesive properties do play a role in various biological and environmental processes, they do not significantly contribute to temperature regulation in coastal areas. Adhesion primarily affects how water interacts with surfaces and does not directly influence heat retention.
B) Water is a versatile solvent.
Although water's ability to dissolve many substances is crucial for biological and chemical processes, it does not explain the temperature moderation in coastal regions. The solvent properties of water do not relate to heat retention or temperature stability.
C) Water has a high specific heat capacity.
This characteristic is essential for temperature regulation. Water's high specific heat capacity allows it to absorb heat during the day and release it slowly at night, leading to less drastic temperature changes in coastal areas compared to more inland locations, where land heats up and cools down more quickly.
D) Water forms covalent bonds with other water molecules.
The formation of covalent bonds between water molecules contributes to water's unique properties, but it does not specifically explain the temperature moderation in coastal areas. While these bonds contribute to water's high specific heat, they are not the direct reason for the temperature stability observed in coastal regions.
Conclusion
The high specific heat capacity of water is the key characteristic that explains why coastal areas experience less dramatic temperature changes throughout the day. Other options either do not relate directly to temperature moderation or describe properties that do not influence temperature fluctuations in the same way. Thus, C is the most relevant and accurate choice in this context.