AP BIOLOGY

Detailed explanation-1: -One of water’s most significant properties is that it takes a lot of energy to heat it. Precisely, water has to absorb 4, 184 Joules of heat (1 calorie) for the temperature of one kilogram of water to increase 1°C. For comparison sake, it only takes 385 Joules of heat to raise 1 kilogram of copper 1°C.

Detailed explanation-2: -Water temperatures change slowly, much slower than air temperatures, because there is so much more mass in a particular volume of water to heat than in a similar volume of air and that mass of water can hold so much more heat than can air.

Detailed explanation-3: -Adding energy (heating) atoms and molecules increases their motion, resulting in an increase in temperature. Removing energy (cooling) atoms and molecules decreases their motion, resulting in a decrease in temperature.

Detailed explanation-4: -energy will be transferred from the warmer object to the cooler one. The movement of thermal energy from a substance at a higher temperature to one at a lower temperature is called heat. When a substance is heated, it gains thermal energy. Therefore, its particles move faster and its temperature rises.

Detailed explanation-5: -Heat transfer, whether from the air, sunlight, another water source or thermal pollution can change the temperature of water. Water temperature plays a major role in the quality of aquatic life and habitats. Heat flow and the fluctuation of temperature determine what species will live and thrive in a body of water.